Download or read book Theory of Metal Insulator Transition in Strongly Correlated Electron Systems written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamical Mean field Theory Studies of Metal insulator Transition and Superconductivity in Strongly Correlated Electron Systems written by Hitoshi Watanabe and published by . This book was released on 2000 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open Problems in Strongly Correlated Electron Systems written by Janez Bonca and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Bled, Slovenia, 26-30 April 2000
Download or read book Strongly Correlated Electrons in Two Dimensions written by Sergey Kravchenko and published by CRC Press. This book was released on 2017-05-25 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of strongly correlated electrons confined in two dimensions are a forefront area of modern condensed matter physics. In the past two or three decades, strongly correlated electron systems have garnered a great deal of scientific interest due to their unique and often unpredictable behavior. Two of many examples are the metallic state and the metal–insulator transition discovered in 2D semiconductors: phenomena that cannot occur in noninteracting systems. Tremendous efforts have been made, in both theory and experiment, to create an adequate understanding of the situation; however, a consensus has still not been reached. Strongly Correlated Electrons in Two Dimensions compiles and details cutting-edge research in experimental and theoretical physics of strongly correlated electron systems by leading scientists in the field. The book covers recent theoretical work exploring the quantum criticality of Mott and Wigner–Mott transitions, experiments on the metal–insulator transition and related phenomena in clean and dilute systems, the effect of spin and isospin degrees of freedom on low-temperature transport in two dimensions, electron transport near the 2D Mott transition, experimentally observed temperature and magnetic field dependencies of resistivity in silicon-based systems with different levels of disorder, and microscopic theory of the interacting electrons in two dimensions. Edited by Sergey Kravchenko, a prominent experimentalist, this book will appeal to advanced graduate-level students and researchers specializing in condensed matter physics, nanophysics, and low-temperature physics, especially those involved in the science of strong correlations, 2D semiconductors, and conductor–insulator transitions.
Download or read book Realistic Modeling of Strongly Correlated Electron Systems written by Georg Keller and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics of materials with strongly correlated electrons is one of the most exciting topics of present-day theoretical and experimental solid-state research. A wide variety of interesting phenomena, among them metal-insulator transitions, the giant and colossal magnetoresistance effect and heavy-fermion behavior, can be attributed to electronic correlations. One focus of current research is on transition metals and especially transition metal oxides due to the diversity of correlation phenomena found in these systems. In this thesis, the physics of strongly correlated transition metal oxide systems is investigated with the LDA+DMFT approach. This method combines the advantages of the local density approximation (LDA), which provides a realistic ab initio description for many materials, with the correct treatment of the local correlations within dynamical mean-field theory (DMFT). The self-consistent equations of the DMFT are solved with an auxiliary-field quantum Monte Carlo algorithm. In particular, the metallic and insulating phase of V2O3 and the peculiarities of its metal-insulator transition are explored. Furthermore, the strongly correlated metals SrVO3 and CaVO3 are studied, as well as LiV2O4 which is the first d-electron system found to exhibit heavy-fermion behavior. Where possible, the theoretical results are compared with recent experimental data.
Download or read book Strongly Correlated Electron Systems Ii Proceedings Of The Adriatico Conference And Miniworkshop written by G Baskaran and published by World Scientific. This book was released on 1991-02-28 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second in a series of miniworkshops and Adriatico conferences devoted to the exciting field of strongly correlated electron systems including quantum Hall effect, metal insulator transition, heavy fermions and high Tc superconductivity. In spite of enormous efforts made by physicists worldwide to solve these difficult problems, many important issues are still widely open and this topic remains the most active field in condensed matter physics. The review talks and reports on original research given by the experts in the field represent a state-of-the-art summary of this fast-moving field.
Download or read book Electron Correlation in Metals written by K. Yamada and published by Cambridge University Press. This book was released on 2010-06-24 with total page 257 pages. Available in PDF, EPUB and Kindle. 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.
Download or read book Mott Hubbard Transition in Strongly Correlated Electron Systems written by Giovanni Sordi and published by . This book was released on 2008 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: I study the Mott metal-insulator transition within the dynamical mean-field theory in two schematic Hamiltonians widely used to describe the strongly correlated electron systems : the Hubbard model and the periodic Anderson model. The scenario for the transition in the Hubbard model is reviewed and the analysis of the photoemission spectra near the transition is presented in detail. The doping driven Mott transition in the periodic Anderson model is discussed with respect to the one realized in the Hubbard model. The main finding is a qualitatively different scenario for electron or hole driven transitions. In the former case the transition is expectedly similar to the first order transition of the Hubbard model. However, in the latter case, a second order transition is found. Thus I demonstrate that the transition scenario of the Hubbard model is not generic for the periodic Anderson model.
Download or read book Conductor Insulator Quantum Phase Transitions written by Vladimir Dobrosavljevic and published by Oxford University Press. This book was released on 2012-06 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: When many particles come together how do they organize themselves? And what destroys this organization? Combining experiments and theory, this book describes intriguing quantum phases - metals, superconductors and insulators - and transitions between them. It captures the excitement and the controversies on topics at the forefront of research.
Download or read book Lectures on the Physics of Strongly Correlated Systems XIV written by Adolfo Avella and published by American Institute of Physics. This book was released on 2011-01-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume contains the lectures delivered at the XIV Training Course in the Physics of Strongly Correlated Systems, held in Vietri sul Mare (Salerno) Italy, in October 2009. The project of the meeting was to promote the formation of young scientists by means of training through research. These features are reflected in the book: the lectures are up-to-date monographs of relevant subjects in the field of Condensed Matter Physics. Contributions include: Electronic Structure of Strongly Correlated Materials (Electronic structure calculations in one-electron approximation; Hubbard model in Dynamical Mean-Field Theory (DMFT); Electronic structure calculations for real materials by LDA+DMFT method); Computational Studies of Quantum Spin Systems (Quantum spin models, their ground states and quantum phase transitions; Classical phase transitions, Monte Carlo simulations, and finite-size scaling; Exact diagonalization methods; Quantum Monte Carlo simulations and the Stochastic Series Expansion method; Survey of related computational methods); Dynamical Mean-Field Theory of Electronic Correlations in Models and Materials (Mean-field theories for many-body systems; Lattice fermions in the limit of high dimensions; Dynamical mean-field theory for correlated lattice fermions; The Mott-Hubbard Metal-Insulator Transition; Electronic correlations and disorder; Theory of electronic correlations in materials; Kinks in the dispersion of strongly correlated electron systems).
Download or read book Spectroscopy of Mott Insulators and Correlated Metals written by Atsushi Fujimori and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive studies of high-Tc cuprate superconductors have stimualted investigations into various transition-metal oxides. Mott transitions in particular provide fascinating problems and new concepts in condensed matter physics. This book is a collection of overviews by well-known, active researchers in this field. It deals with the latest developments, with particular emphasis on the theoretical, spectroscopic, and transport aspects.
Download or read book The Mott Metal Insulator Transition written by Florian Gebhard and published by Springer Science & Business Media. This book was released on 1997-03-20 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Little do we reliably know about the Mott transition, and we are far from a complete understanding of the metal --insulator transition due to electr- electron interactions. Mott summarized his basic ideas on the subject in his wonderful book Metal--Insulator nansitions that first appeared in 1974 11. 1). In his view, a Motk insulator displays a gap for charge-carrying excitations due to electron cowelations, whose importance is expressed by the presence of local magnetic moments regardless of whether or not they are ordered. Since the subject is far from being settled, different opinions on specific aspects of the Mott transition still persist. This book naturally embodies my own understanding of the phenomenon, inspired by the work of the late Sir Kevill Mott. The purpose of this book is twofold: first, to give a detailed presen- tion of the basic theoretical concopts for Mott insulators and, second, to test these ideas against the results from model calculations. For this purpose the Hubbard model and some of its derivatives are best suited. The Hubbard model describes a Mott transition with a mere minimum of tunable par- eters, and various exact statements and even exact solutions exist in certain limiting cases. Exact solutions not only allow us to test our basic ideas, but also help to assess the quality of approxin~ate theories for correlated electron systems.
Download or read book Strongly Correlated Fermions and Bosons in Low Dimensional Disordered Systems written by Igor V. Lerner and published by Springer Science & Business Media. This book was released on 2002-07-31 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics of strongly correlated fermions and bosons in a disordered envi ronment and confined geometries is at the focus of intense experimental and theoretical research efforts. Advances in material technology and in low temper ature techniques during the last few years led to the discoveries of new physical of atomic gases and a possible metal phenomena including Bose condensation insulator transition in two-dimensional high mobility electron structures. Situ ations were the electronic system is so dominated by interactions that the old concepts of a Fermi liquid do not necessarily make a good starting point are now routinely achieved. This is particularly true in the theory of low dimensional systems such as carbon nanotubes, or in two dimensional electron gases in high mobility devices where the electrons can form a variety of new structures. In many of these sys tems disorder is an unavoidable complication and lead to a host of rich physical phenomena. This has pushed the forefront of fundamental research in condensed matter towards the edge where the interplay between many-body correlations and quantum interference enhanced by disorder has become the key to the understand ing of novel phenomena.
Download or read book Electron Correlation in Metals written by Kōsaku Yamada and published by . This book was released on 2004 with total page 245 pages. Available in PDF, EPUB and Kindle. 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.
Download or read book Strongly Correlated Electron Systems Proceedings Of The Anniversary Adriatico Research Conference And Workshop written by Baskaran G and published by World Scientific. This book was released on 1990-01-01 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Insulator Transitions written by Nevill Mott and published by CRC Press. This book was released on 2004-01-14 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a second edition of a classic book. Written by the late, great Sir Nevill Mott (Britain's last Nobel Prize winner for Physics), Metal Insulator Transitions has been greatly updated and expanded to further enhance its already enviable reputation.
Download or read book Quantum Critical Regimes Around the Metal Insulator Transition written by Yuting Tan and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-insulator transitions (MITs) remain one of the unresolved science problems of condensed-matter physics, which are rather general and of fundamental importance. In the vicinity of the MITs, the behavior is found to be unconventional and exotic. This complexity makes it difficult to recognize the dominant degrees of freedom, resulting in a plethora of theoretical viewpoints based on very different ideas. First we study the transport behavior and the dielectric response near Mott Metal-Insulator transition (MIT) using the Iterative Perturbation Theory (IPT), which is exact at the atomic limit at half-filling, for the single-band Hubbard model supplemented by percolation theory. We successfully interpret the experimental observation of a colossal peak of the dielectric function near the Mott MIT in organic material $\\\\kappa\\\\text{-(BEDT-TTF)}_2\\\\text{Cu}_2\\\\text{(CN)}_3$. Our results suggest the diverging feature of dielectric response comes from percolation effects near a first-order MIT, where metallic and insulator domains present simultaneously as long as the materials have defects or impurities. Our findings suggest a similar 'dielectric catastrophe' in many other correlated materials and can explain previous observations that were assigned to multiferroicity or ferroelectricity. Second we summarize both experimental and theoretical observations of the criticality around the Mott transition, in three types of systems: 2-dimensional electron gas (2DEG) in Si-MOSFE, Mott organic material ($\\\\kappa\\\\text{-(BEDT-TTF)}_2\\\\text{Cu}_2\\\\text{(CN)}_3$), and transition metal dichalcogenide (TMD) moire bilayer $\\\\text{MoTe}_2/\\\\text{WSe}_2$. Particularly, we find robust resistivity maxima are clearly seen in all these materials. We then use dynamical mean field theory (DMFT) and 'hybrid' DMFT correspondingly to show that dielectric response can be used to identify the origin of these resistivity maxima. We find that near the MIT, it corresponds to the percolation effect within the (spatially inhomogeneous) metal-insulator phase coexistence region, where a colossal enhancement of the dielectric response has been found. Deep in the metallic phase, it signals the thermal destruction of coherent quasiparticles due to strong correlation effects, and a dramatic drop and a change of sign in the dielectric constant would be found. Third we study the disorder dominated MIT in TMD moiré bilayer. In this material, a long-range geometric moiré pattern emerges when two atomically thin materials are misaligned or have a lattice mismatch. This drastically reduces the electronic kinetic energy, paving the way for new strongly correlated phases. We proposed a minimal theoretical model describing the interplay of interactions and disorder, which is solved at DMFT + coherent potential approximation (CPA) level. The results capture most experimental trends at almost a perfect level. We investigate the quantum criticality near MIT with a fully occupied flat band (f=2), which is found to be in a disorder-dominated regime. Finally, we consider long-range Coulomb interaction in low band filling cases, where one expects Wigner crystallization to occur. To investigate the nontrivial electronic phases appearing away from commensurate fillings, we first used the spinless Hartree method to calculate the total free energy, and then we used DMFT and Kubo formula to obtain the transport behavior. We find that, for most fillings, an amorphous charge-ordered metallic state - the electron slush - appears in strongly correlated TMD hetero-bilayers. Our results suggest performing transport and Scanning Tunneling Microscopy (STM) experiments on TMD hetero-bilayers to study the interplay between doping a Wigner-Mott insulator and amorphous charge order.
