Magnetism in Heavy Fermion Systems

Magnetism in Heavy Fermion Systems
Author: Harry Brian Radousky
Publsiher: World Scientific
Total Pages: 383
Release: 2000
ISBN: 9789812792655
Category: Science
Language: EN, FR, DE, ES & NL

Magnetism in Heavy Fermion Systems Book Excerpt:

Magnetism in Heavy Fermion Systems is a review volume which covers an important subset of topics in the field of heavy fermion and non-Fermi liquid physics. It summarizes much of the experimental information in these areas, and includes an article which discusses theoretical interpretations of the complex magnetic behavior of heavy fermion systems. The topics covered include heavy fermion superconductivity, muon spin relaxation in small-moment heavy fermions, neutron scattering from heavy fermions, random localized magnetism in heavy fermions, and magnetism in Pr-containing cuprates. One feature of the book which should be helpful to graduate students and new workers in the field is the extensive references and a separate list of review articles.

Antiferromagnetism and Superconductivity in Ce based Heavy Fermion Systems

Antiferromagnetism and Superconductivity in Ce based Heavy Fermion Systems
Author: Edit Lengyel
Publsiher: Cuvillier Verlag
Total Pages: 203
Release: 2008
ISBN: 386727696X
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Antiferromagnetism and Superconductivity in Ce based Heavy Fermion Systems Book Excerpt:

Heavy Fermion Systems

Heavy Fermion Systems
Author: Prasanta Misra
Publsiher: Elsevier
Total Pages: 352
Release: 2007-12-11
ISBN: 9780080554679
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Heavy Fermion Systems Book Excerpt:

The book on Heavy-Fermion Systems is a part of the Book series "Handbook of Metal Physics", each volume of which is written to facilitate the research of Ph.D. students, faculty and other researchers in a specific area. The Heavy-Fermions (sometimes known as Heavy-Electrons) is a loosely defined collection of intermetallic compounds containing rare-earth (mostly Ce) or actinide (mostly U) elements. These unusual names were given due to the large effective mass (100-1,000 times greater than the mass of a free electron) below a critical temperature. They have a variety of ground states including superconducting, antiferromagnetic, paramagnetic or semiconducting. Some display unusual magnetic properties such as magnetic quantum critical point and metamagnetism. This book is essentially a summary as well as a critical review of the theoretical and experimental work done on Heavy Fermions. · Extensive research references. · Comprehensive review of a very rapidly growing number of theories. · Summary of all important experiments. · Comparison with other highly correlated systems such as High-Tc Superconductors. · Possible Technological applications.

ELECTRON PHONON INTERACTION AND ITS EFFECTS IN HEAVY FERMION SYSTEMS

ELECTRON PHONON INTERACTION AND ITS EFFECTS IN HEAVY FERMION SYSTEMS
Author: Dr. Jitendra Sahoo
Publsiher: Newredmars Education Pvt Ltd
Total Pages: 101
Release: 2022-06-25
ISBN: 9393620075
Category: Art
Language: EN, FR, DE, ES & NL

ELECTRON PHONON INTERACTION AND ITS EFFECTS IN HEAVY FERMION SYSTEMS Book Excerpt:

The story of heavy fermions (HF) begun with the discovery of the low temperature behaviour of CeAl3 by Andres et al. in the year 1975 took the momentum after the discovery of superconductivity in CeCu2Si2 by Steglich et al. in the year 1979 . Though HF behaviour is common in the rare-earth elements like Ce, Yb and actinides like U, it is also found to exist in some of the praseodymium (Pr), samarium (Sm) , plutonium (Pu) and more recently in neptunium (Np) systems. These compounds are characterized by the presence of partially filled f-electron bands. At high temperatures, these magnetic moments manifest themselves as a weakly interacting set of local moments of the f electrons with Curie-Weiss susceptibility that coexists with light s or d conduction electrons. But at low temperature, these f-electrons hybridize with conduction electrons near Fermi level via Kondo spin fluctuation which happens through constant exchange spin-flip transition of f-electrons and band electrons in the vicinity of Fermi level. This process leads to a strong mixing of Fermi electrons with the localized f-electrons which is manifested in a renormalization of the Fermi surface and a drastic enhancement of the effective mass of the electrons at Fermi level. Further, in HF systems, electron-phonon interaction (EPI) contributes a lot in manifestation of some of the anomalous behaviour relating to elastic constant, ultrasonic attenuation & sound velocity, anisotropic Fermi surface, Kondo volume collapse etc. In this PhD thesis book in title “Electron phonon interaction and its effect in heavy fermion (HF) systems” the author tries to put some light into the behavoiour of Electron-phonon interaction in describing some of the properties of HF systems at low temperatures. In this 1 st edition, the book has been presented in multicolour edition with profuse colour illustrations so as to increase its clarity, understand ability and legibility, especially of the figures depicted to explain the low temperature behaviour of HF systems. It is hoped that the present book will serve its purpose in attracting young researchers to the field of HF systems. It is my foremost duty to express my deep sense of gratitute to my supervisor Dr. Pratibindhya Nayak , Professor Emeritus, School of Physics, Sambalpur University, Odisha, for his able guidance at every stage of this work.. His innovative methods and inspirational guidance have largely contributed to the conceptualization of the form and content of this book. I am indebted to my family members for their constant support. I am sincerely thankful to the publisher, Newredmars Education to bring my works into light in form of a book Healthy criticism and suggestions for further improvement of the book are solicited.

Theoretical and Experimental Aspects of Valence Fluctuations and Heavy Fermions

Theoretical and Experimental Aspects of Valence Fluctuations and Heavy Fermions
Author: L.C. Gupta
Publsiher: Springer Science & Business Media
Total Pages: 750
Release: 2012-12-06
ISBN: 1461309476
Category: Science
Language: EN, FR, DE, ES & NL

Theoretical and Experimental Aspects of Valence Fluctuations and Heavy Fermions Book Excerpt:

During the Koln meeting (August 28-31, 1984), Irdia was chosen as the venue for the next International Conference on Valence Fluctuations. lhis was in recognition ard appreciation of the work done, both experimental ard theoretical, by the Irdian scientists in this area during the last decade. We decided to hold this Conference in the month of January, 1987 at Bangalore. lhe subject of Valence Fluctuations has kept itself alive ard active as it has provided many shocks ard suprises particularly among the Ce- ard U-based intermetallies. lhe richness of many interesting physical phenomena occurring in mixed valent materials, the flexibility of modifying their physical properties (by alloying, for example) ard the possibility of synthesizing a wide variety of new such materials seem to be the key factors in this regard. Barely six months before this Conference, an International Conference on Anomalous Rare Earths and Actinides (ICAREA) had been held at Grenoble (July, 1986) which also focussed on mixed valence ard heavy fermion phenomena. In spite of this, the response to this' Conference was very enthusiastic and encouraging. Many interesting ard important results were presented at this Conference which have been included in this volume.

Scaling in Heavy fermion Systems

Scaling in Heavy fermion Systems
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 2005
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Scaling in Heavy fermion Systems Book Excerpt:

Ambient pressure characteristics of heavy-fermion compounds, such as the ratio of the low temperature magnetic susceptibility to the electronic specific heat coefficient [gamma] and a simple relationship between the T[sup 2]-coefficient of resistivity and [gamma][sup 2], suggest that a single-energy scale T[sub o] dictates the physics of these materials. Such is the case for Kondo-impurity systems to which heavy-fermions are related. We consider the consequences of assuming that the electronic free energy is given by a universal function of T/T[sub o] (V) where V is the molar volume. We show that volume-dependent magnetic susceptibility, specific heat and electrical resistivity of some heavy-fermion compounds scale as T/T[sub o] (V), at least over a range in pressures and temperatures. A further consequence of the principle assumption is that Gruneisen parameters defined as - [partial-derivative][ell]nX/[partial-derivative]nV, where X is some physical property, should be identical for all properties and equal to that determined from electronic contributions to the volume- thermal expansion coefficient and specific heat. In several materials, this equality holds, at least approximately. Although evidence is found for single-energy scaling in heavy-fermion materials, we cannot conclude unambiguously that the basic assumption is correct in detail.

Superconductivity Magnetism and Non fermi liquid Behavior in Heavy fermion Systems

Superconductivity  Magnetism and Non fermi liquid Behavior in Heavy fermion Systems
Author: Vivien Stefanie Zapf
Publsiher: Unknown
Total Pages: 290
Release: 2003
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Superconductivity Magnetism and Non fermi liquid Behavior in Heavy fermion Systems Book Excerpt:

Superconductivity in Heavy Fermion Systems

Superconductivity in Heavy Fermion Systems
Author: M. Noga
Publsiher: Unknown
Total Pages: 25
Release: 1986
ISBN: 9789514540455
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Superconductivity in Heavy Fermion Systems Book Excerpt:

Pair Correlations in Many Fermion Systems

Pair Correlations in Many Fermion Systems
Author: Vladimir Z. Kresin
Publsiher: Springer Science & Business Media
Total Pages: 296
Release: 2013-06-29
ISBN: 1489915559
Category: Science
Language: EN, FR, DE, ES & NL

Pair Correlations in Many Fermion Systems Book Excerpt:

At first glance, the articles in this book may appear to have nothing in common. They cover such seemingly disparate subjects as the properties of small metallic clusters and the behavior of superfluid He3, nuclear physics and organic materials, copper oxides and mag netic resonance. Why have they been brought together, particUlarly in our time of narrow spe cialization? In fact, the properties and effects described in this book touch upon one and the same fundamental phenomenon: pair correlation. Introduced in the theory of superconductivity by J. Bardeen, L. Cooper, and J. Schrieffer (BCS), this effect plays a key role in various Fermi systems. The book consists of several sections. The first chapter is concerned with conven tional and high Tc superconductors. The second chapter describes two relatively young fami lies of superconductors: organics and fullerenes. Chapter III addresses the superfluidity of 3 He • The discovery of this phenomenon in 1971 was a big event in physics and last year was acknowledged by a Nobel prize. This book contains the text of the Nobel lecture. Chapters IV and V are devoted to correlations in finite Fermi systems such as small metallic clusters, C 60 anions, and atomic nuclei. The book thus covers a broad range of problems, illuminating the close ties between various areas of physics.

Theory of Heavy Fermions and Valence Fluctuations

Theory of Heavy Fermions and Valence Fluctuations
Author: Tadao Kasuya,Tetsuro Saso
Publsiher: Springer Science & Business Media
Total Pages: 290
Release: 2012-12-06
ISBN: 3642826180
Category: Science
Language: EN, FR, DE, ES & NL

Theory of Heavy Fermions and Valence Fluctuations Book Excerpt:

This volume contains the proceedings of the Eighth Taniguchi Interna tional Symposium on the Theory of Condensed Matter, which was held at Shima Kanko Hotel in Shima, Japan, 10-13 April 1985. The topic of the Symposium was Valence Fluctuation and Heavy Fermion Systems, one of the most fundamental problems in present-day condensed matter physics. The dilute Kondo problem, which is one of the most typical and unique many-body problems in condensed matter physics, developed recently into the dense Kondo and the coherent Kondo lattice problems in the 4f elec tron systems. It is accepted now that a large degeneracy in f-electron systems makes this latter situation possible by enhancing the single-site Kondo state relative to the inter-site magnetic interactions. Now, anoma lous behavior in f-electron systems show rich variety and are called valence fluctuation phenomena as a whole. They have, however, a common fea ture. In the lowest temperature region, they show either heavy Fermion like character or a narrow gap formation at the Fermi energy. Discovery of superconductivity in the heavy Fermion systems is attracting more in terest. Anyway, the valence fluctuating states are thought to be of fun damental importance to bridge the gap between the localized magnetic states and the delocalized nownagnetic states.

Physics Of Heavy Fermions Heavy Fermions And Strongly Correlated Electrons Systems

Physics Of Heavy Fermions  Heavy Fermions And Strongly Correlated Electrons Systems
Author: Onuki Yoshichika
Publsiher: World Scientific
Total Pages: 336
Release: 2018-04-20
ISBN: 9813232218
Category: Science
Language: EN, FR, DE, ES & NL

Physics Of Heavy Fermions Heavy Fermions And Strongly Correlated Electrons Systems Book Excerpt:

A large variety of materials prove to be fascinating in solid state and condensed matter physics. New materials create new physics, which is spearheaded by the international experimental expert, Prof Yoshichika Onuki. Among them, the f electrons of rare earth and actinide compounds typically exhibit a variety of characteristic properties, including spin and charge orderings, spin and valence fluctuations, heavy fermions, and anisotropic superconductivity. These are mainly manifestations of better competitive phenomena between the RKKY interaction and the Kondo effect. The present text is written so as to understand these phenomena and the research they prompt. For example, superconductivity was once regarded as one of the more well-understood many-body problems. However, it is, in fact, still an exciting phenomenon in new materials. Additionally, magnetism and superconductivity interplay strongly in heavy fermion superconductors. The understanding of anisotropic superconductivity and magnetism is a challenging problem in solid state and condensed matter physics. This book will tackle all these topics and more. Contents: Conduction Electrons and Fermi Surfaces Local Magnetic Moment Single Crystal Growth and Measuring Methods Itinerant 3d-electrons Heavy Fermions Superconductivity Readership: Graduate students and researchers interested and/or involved in single crystal growth, heavy fermions, superconductivity and related experimental methods. Keywords: Heavy Fermions;Strongly Correlated Electrons Systems;Magnetism;SuperconductivityReview: Key Features: Readers can understand the present frontiers of solid state and condensed matter physics, on the basis of fundamental ideas and formulae described in various related methods of measurement This paves the way for readers to participate in research concerning single crystal growth and characteristic properties in rare earth and actinide compounds

Hidden Order and Exotic Superconductivity in the Heavy Fermion Compound URu2Si2

Hidden Order and Exotic Superconductivity in the Heavy Fermion Compound URu2Si2
Author: Ryuji Okazaki
Publsiher: Springer Science & Business Media
Total Pages: 102
Release: 2013-11-29
ISBN: 4431545921
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Hidden Order and Exotic Superconductivity in the Heavy Fermion Compound URu2Si2 Book Excerpt:

In this thesis, the author investigates hidden-order phase transition at T0 = 17.5 K in the heavy-fermion URu2Si2. The four-fold rotational symmetry breaking in the hidden order phase, which imposes a strong constraint on the theoretical model, is observed through the magnetic torque measurement. The translationally invariant phase with broken rotational symmetry is interpreted as meaning that the hidden-order phase is an electronic “nematic” phase. The observation of such nematicity in URu2Si2 indicates a ubiquitous nature among the strongly correlated electron systems. The author also studies the superconducting state of URu2Si2 below Tc = 1.4 K, which coexists with the hidden-order phase. A peculiar vortex penetration in the superconducting state is found, which may be related to the rotational symmetry breaking in the hidden-order phase. The author also identifies a vortex lattice melting transition. This transport study provides essential clues to the underlying issue of quasiparticle dynamics as to whether a quasiparticle Bloch state is realized in the periodic vortex lattice.

The Non Fermi Liquid Effects in the Heavy Fermion Kondo Systems of Lu1 x Yb x M2Si2 M

The Non Fermi Liquid Effects in the Heavy Fermion Kondo Systems of Lu1  x Yb x M2Si2  M
Author: Samuel MaQuilón
Publsiher: Unknown
Total Pages: 268
Release: 2007
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

The Non Fermi Liquid Effects in the Heavy Fermion Kondo Systems of Lu1 x Yb x M2Si2 M Book Excerpt:

Physics of Heavy fermion Systems

Physics of Heavy fermion Systems
Author: Ryszard J. Radwański
Publsiher: Unknown
Total Pages: 28
Release: 1995
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Physics of Heavy fermion Systems Book Excerpt:

Theory of Heavy Fermion Systems

Theory of Heavy Fermion Systems
Author: Hyekyung Won
Publsiher: Unknown
Total Pages: 242
Release: 1988
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Theory of Heavy Fermion Systems Book Excerpt:

Materials Under Extreme Conditions

Materials Under Extreme Conditions
Author: A.K. Tyagi,S. Banerjee
Publsiher: Elsevier
Total Pages: 870
Release: 2017-01-13
ISBN: 0128014423
Category: Science
Language: EN, FR, DE, ES & NL

Materials Under Extreme Conditions Book Excerpt:

Materials Under Extreme Conditions: Recent Trends and Future Prospects analyzes the chemical transformation and decomposition of materials exposed to extreme conditions, such as high temperature, high pressure, hostile chemical environments, high radiation fields, high vacuum, high magnetic and electric fields, wear and abrasion related to chemical bonding, special crystallographic features, and microstructures. The materials covered in this work encompass oxides, non-oxides, alloys and intermetallics, glasses, and carbon-based materials. The book is written for researchers in academia and industry, and technologists in chemical engineering, materials chemistry, chemistry, and condensed matter physics. Describes and analyzes the chemical transformation and decomposition of a wide range of materials exposed to extreme conditions Brings together information currently scattered across the Internet or incoherently dispersed amongst journals and proceedings Presents chapters on phenomena, materials synthesis, and processing, characterization and properties, and applications Written by established researchers in the field

Magnetic Excitations and Fluctuations II

Magnetic Excitations and Fluctuations II
Author: Umberto Balucani,Stephen W. Lovesey,Mario G. Rasetti,Valerio Tognetti
Publsiher: Springer Science & Business Media
Total Pages: 209
Release: 2012-12-06
ISBN: 3642731074
Category: Science
Language: EN, FR, DE, ES & NL

Magnetic Excitations and Fluctuations II Book Excerpt:

An international workshop on Elementary Excitations and Fluctuations in Magnetic Systems was held in Turin for five days beginning 25 May, 1987. The workshop followed much the same format as the one with the same title held in San Miniato in 1984 (proceedings: Springer Series in-Solid-State Sciences, Vol. 54), that most participants contributed talks and provided papers for the proceedings. While many of the participants had attended the first workshop, 15 of the 40 invited review papers were presented by scientists who had not. The majority of the talks reported theoretical work concerned with the introduction of new techniques. However, experimental work was also well represented, not least because many of the reported theoretical studies were motivated by experimental findings, and a highlight of the workshop was an extremely stimulating session devoted to recent neutron scattering measure ments, on various systems, that exploited polarization analysis. The fine venue of the workshop, Villa Gualino, with its excellent facili ties and spacious accommodation, helped to produce a delightful relaxed and friendly atmosphere. For the use of Villa Gualino and significant financial support we are indebted to our host organization, the Institute for Scien tific Interchange (lSI). Additional financial support came from the Consiglio Nazionale delle Ricerche (CNR), Centro Interuniversitario di Struttura della Material del Ministero della Pubblica Istruzione (CISM-MPI) and Gruppo Nazionale di Struttura della Materia (GNSM-CNR).

Superconductivity in Heavy Fermion Systems

Superconductivity in Heavy Fermion Systems
Author: Lev Petrovič Gorʹkov (Physicien, Union Soviétique)
Publsiher: Unknown
Total Pages: 116
Release: 1987
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Superconductivity in Heavy Fermion Systems Book Excerpt:

The NMR Probe of High Tc Materials and Correlated Electron Systems

The NMR Probe of High Tc Materials and Correlated Electron Systems
Author: Russell E. Walstedt
Publsiher: Springer
Total Pages: 323
Release: 2017-10-27
ISBN: 3662555824
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

The NMR Probe of High Tc Materials and Correlated Electron Systems Book Excerpt:

This new edition updates readers in three areas of NMR studies, namely, recent developments in high-Tc materials, heavy fermion systems and actinide oxides are presented. The NMR probe has yielded a vast array of data for solid state materials, corresponding to different compounds, ionic sites, and nuclear species, as well as to a wide variety of experimental conditions. The last two parts of the book are completely new in this edition, while the first part has seen major updates.This edition features the latest developments for high-Tc materials, especially the advances in the area of pseudogap studies are reviewed. An in depth overview of heavy fermion systems is presented in the second part, notably Kondo lattices, quantum critical points and unconventional superconductivity are areas of intense research recently and are covered extensively. Finally, valuable information from NMR studies with actinide oxides will be provided.Ongoing analysis and discussion of NMR data have resulted in a wealth of important insights into the physics of these exotic systems. The aims of this monograph are manyfold. First, it reviews NMR methodology as it has been applied to the different studies. This is addressed to NMR practitioners and to physics laypersons alike. Next, it presents a review of NMR measurements and the wide variety of phenomena which they represent. The third phase is to recount the theoretical model calculations and other proposals which have been put forward to account for these data.

Electron Correlation in Metals

Electron Correlation in Metals
Author: K. Yamada
Publsiher: Cambridge University Press
Total Pages: 135
Release: 2010-06-24
ISBN: 1139453068
Category: Science
Language: EN, FR, DE, ES & NL

Electron Correlation in Metals Book Excerpt:

Since the discovery of high Tc superconductivity, the role of electron correlation on superconductivity has been an important issue in condensed matter physics. Here the role of electron correlation in metals is explained in detail on the basis of the Fermi liquid theory. The book, originally published in 2004, discusses the following issues: enhancements of electronic specific heat and magnetic susceptibility, effects of electron correlation on transport phenomena such as electric resistivity and Hall coefficient, magnetism, Mott transition and unconventional superconductivity. These originate commonly from the Coulomb repulsion between electrons. In particular, superconductivity in strongly correlated electron systems is discussed with a unified point of view. This book is written to explain interesting physics in metals for undergraduate and graduate students and researchers in condensed matter physics.