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We present a unified, global perspective on the magnetic properties of strongly disordered electronic systems, with special emphasis on the case where the ground state is metallic. We review the arguments for the instability of the…

强关联电子 · 物理学 2009-10-30 Subir Sachdev

Several new aspects of the subtle interplay between electronic correlations and disorder are reviewed. First, the dynamical mean-field theory (DMFT)together with the geometrically averaged ("typical") local density of states is employed to…

强关联电子 · 物理学 2015-05-18 K. Byczuk , W. Hofstetter , U. Yu , D. Vollhardt

The existence of Anderson localization, characterized by vanishing diffusion due to strong disorder, has been demonstrated in numerous ways. A systematic approach based on the Anderson quantum model of the Fermi gas in random lattices that…

无序系统与神经网络 · 物理学 2026-03-26 Václav Janiš

We investigate the role of localization effects in the Kondo disorder mechanism for non-Fermi liquid behavior in disordered Kondo lattices. We find that the distribution of Kondo temperatures is strongly affected by fluctuations of the…

强关联电子 · 物理学 2007-05-23 E. Miranda , V. Dobrosavljevic

We demonstrate that local density of states fluctuations in disordered Anderson lattice models universally lead to the emergence of non-Fermi liquid (NFL) behavior. The NFL regime appears at moderate disorder (W = W_c) and is characterized…

强关联电子 · 物理学 2007-05-23 E. Miranda , V. Dobrosavljevic

We have studied the one-dimensional periodic, symmetric Anderson model at half filling in the presence of disorder using finite-temperature quantum Monte Carlo techniques. We have examined for the first time the disorder both in…

强关联电子 · 物理学 2007-05-23 Feng Chen , Nicholas Kioussis

We review recent progress in our theoretical understanding of strongly correlated fermion systems in the presence of disorder. Results were obtained by the application of a powerful nonperturbative approach, the Dynamical Mean-Field Theory…

强关联电子 · 物理学 2015-05-18 K. Byczuk , W. Hofstetter , D. Vollhardt

We study the Mott metal-insulator transition in the Periodic Anderson Model within Dynamical Mean Field Theory (DMFT). Near the quantum transition, we find a non-Fermi liquid metallic state down to a vanishing temperature scale. We identify…

强关联电子 · 物理学 2011-04-06 A. Amaricci , G. Sordi , M. J. Rozenberg

Temperature dependent transport of disordered electronic systems is examined in the presence of strong correlations. In contrast to what is assumed in Fermi liquid approaches, finite temperature behavior in this regime proves largely…

强关联电子 · 物理学 2007-05-23 M. C. O. Aguiar , E. Miranda , V. Dobrosavljevic , E. Abrahams , G. Kotliar

The influence of substitutional disorder on the transport properties of heavy-fermion systems is investigated. We extend the dynamical mean-field theory treatment of the periodic Anderson model (PAM) to a coherent-potential approximation…

强关联电子 · 物理学 2008-03-25 Claas Grenzebach , Frithjof B. Anders , Gerd Czycholl , Thomas Pruschke

The interplay between Mott and Anderson routes to localization in disordered interacting systems gives rise to different transitions and transport regimes. Here, we investigate the phase diagram at finite temperatures using dynamical mean…

强关联电子 · 物理学 2015-09-25 Helena Braganca , M. C. O. Aguiar , J. Vucicevic , D. Tanaskovic , V. Dobrosavljevic

We revisit the effective theory for fluctuating spin stripes coupled to a Fermi surface, and consider the parameter regime where a spin nematic phase intervenes between the spin density wave state and the symmetric state. It is shown that…

强关联电子 · 物理学 2026-05-15 Xu Zhang , Nick Bultinck

We study the low temperature transport characteristics of a disordered metal in the presence of electron-electron interactions. We compare Hartree-Fock and dynamical mean field theory (DMFT) calculations to investigate the scattering…

强关联电子 · 物理学 2011-09-20 E. C. Andrade , E. Miranda , V. Dobrosavljevic

The interplay between local, repulsive interactions and disorder acting only on one spin orientation of lattice fermions ("spin-dependent disorder") is investigated. The nonmagnetic disorder vs. interaction phase diagram is computed using…

无序系统与神经网络 · 物理学 2015-09-25 J. Skolimowski , D. Vollhardt , K. Byczuk

We present a self-consistent theory of Anderson localization that yields a simple algorithm to obtain \emph{typical local density of states} as an order parameter, thereby reproducing the essential features of a phase-diagram of…

无序系统与神经网络 · 物理学 2009-11-07 V. Dobrosavljevic , A. A. Pastor , Branislav K. Nikolic

Strongly correlated fermions in a crystal or in an optical lattice in the presence of binary alloy disorder are investigated. We employ the statistical dynamical mean-field theory, which incorporates both, local fluctuations due to disorder…

无序系统与神经网络 · 物理学 2010-09-15 Denis Semmler , Krzysztof Byczuk , Walter Hofstetter

We study electron localization in disordered quantum systems, focusing on both individual eigenstates and thermal states. We employ complex polarization as a numerical indicator to characterize the system's localization length. Furthermore,…

无序系统与神经网络 · 物理学 2024-04-30 Chong Sun

Anderson localization (AL) is a ubiquitous interference phenomenon in which waves fail to propagate in a disordered medium. We observe three-dimensional AL of noninteracting ultracold matter by allowing a spin-polarized atomic Fermi gas to…

量子气体 · 物理学 2011-10-12 S. S. Kondov , W. R. McGehee , J. J. Zirbel , B. DeMarco

We study the interplay of electron-electron and electron-disorder scattering in correlated Fermi liquids by the disordered Hubbard model using dynamical mean-field theory with an IPT-CPA solver. We find significant violations of…

强关联电子 · 物理学 2025-02-25 Arianna Poli , Simone Fratini , Jennifer Coulter , Andrew J. Millis , Sergio Ciuchi

We study temperature induced metal-insulator transition in doped ferromagnetic semiconductors, described by s-d exchange model. The transition is a result of the mobility edge movement, the disorder being due to magnetic ions spin density…

凝聚态物理 · 物理学 2007-05-23 Eugene Kogan , Mark Auslender
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