Strongly correlated electrons on frustrated lattices
Hirokazu Tsunetsugu,Kazumasa Hattori,Takuma Ohashi,Norio Kawakami,Tsutomu Momoi +4 more
- Vol. 145, Iss: 1, pp 012015
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TLDR
In this article, the authors review two recent theoretical works on strongly correlated electrons on typical frustrated lattices and derive a low-energy effective model for the 3-orbital t2g Hubbard model on the pyrochlore lattice at quarter filling.Citations
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LiV204: frustration induced heavy fermion metal
TL;DR: In this paper, a two-stage spin-quenching scenario for the unusual heavy fermion state realized in the mixed valent metal LiV2O4 was proposed, where local valence fluctuations are responsible for the formation of partially quenched, spin-1/2 moments below room temperature.
References
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Journal ArticleDOI
Dynamical mean-field theory of strongly correlated fermion systems and the limit of infinite dimensions
TL;DR: The dynamical mean field theory of strongly correlated electron systems is based on a mapping of lattice models onto quantum impurity models subject to a self-consistency condition.
Journal ArticleDOI
Spin liquid state in an organic Mott insulator with a triangular lattice.
Yasuhiro Shimizu,Yasuhiro Shimizu,Kazuya Miyagawa,Kazushi Kanoda,Mitsuhiko Maesato,Gunzi Saito +5 more
TL;DR: 1H NMR and static susceptibility measurements have been performed in an organic Mott insulator with a nearly isotropic triangular lattice and suggest that a quantum spin liquid state is realized in the close proximity of the superconducting state appearing under pressure.
Journal ArticleDOI
On the ground state properties of the anisotropic triangular antiferromagnet
P. Fazekas,Philip W. Anderson +1 more
TL;DR: The ground state of the triangular antiferromagnet is different from the conventional three-sublattice Neel state as mentioned in this paper, and it seems to be probable that this type of ground state prevails in the anisotropy region between the Ising model and the isotropic Heisenberg model.
Journal ArticleDOI
Cellular Dynamical Mean Field Approach to Strongly Correlated Systems
TL;DR: In this paper, a cellular version of dynamical mean field theory is proposed, which gives a natural generalization of its original single-site construction and is formulated in different sets of variables.
Journal ArticleDOI
LiV 2 O 4 : A Heavy Fermion Transition Metal Oxide
S. Kondo,David C. Johnston,C. A. Swenson,Ferdinando Borsa,A. V. Mahajan,Lance L. Miller,T. Gu,Alan I. Goldman,M. B. Maple,D. A. Gajewski,E. J. Freeman,N. R. Dilley,R. P. Dickey,Jack Merrin,K. M. Kojima,Graeme Luke,Yasutomo J. Uemura,Omar Chmaissem,James D. Jorgensen +18 more
TL;DR: In this paper, a crossover from localized moment magnetism to heavy Fermi liquid behavior was reported for the metallic compound with the fcc normal-spinel structure, and the electronic heat capacity coefficient was reported to be approximately 0.42.