Topic
Mott transition
About: Mott transition is a research topic. Over the lifetime, 2444 publications have been published within this topic receiving 78401 citations.
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24 Oct 2007
TL;DR: In this article, the low energy behavior of the one dimensional Hubbard model across the Mott metal-insulator phase transition in an external magnetic field was studied, where elements of the dressed charge matrix were calculated numerically and analytically for arbitrary Hubbard repulsion and magnetization.
Abstract: We study the low energy behavior of the one dimensional Hubbard model across the Mott metal-insulator phase transition in an external magnetic field. In particular we calculate elements of the dressed charge matrix at the critical point of the Mott transition for arbitrary Hubbard repulsion and magnetization numerically and, in certain limiting cases, analytically. These results are combined with a non-perturbative effective field theory approach to reveal how the breaking of time reversal symmetry influences the Mott transition.
1 citations
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TL;DR: In this article, optical nutation in a GaAs/Al x Ga 1−− x As quantum well structure (QWS) assumed to be immersed in a moderately strong magnetic field and irradiated by a not-too-strong near band gap resonant femtosecond pulsed Ti-sapphire laser is analyzed.
1 citations
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TL;DR: In this paper, a vortex Mott insulator where magnetic field-induced vortices are frozen in the dimples of the egg crate potential by their strong repulsion interaction is discovered.
Abstract: We investigate magnetoresistance of a square array of superconducting islands placed on a normal metal, which offers a unique tunable laboratory for realizing and exploring quantum many-body systems and their dynamics. A vortex Mott insulator where magnetic field-induced vortices are frozen in the dimples of the egg crate potential by their strong repulsion interaction is discovered. We find an insulator-to-metal transition driven by the applied electric current and determine critical exponents that exhibit striking similarity with the common thermodynamic liquid-gas transition. A simple and straightforward quantum mechanical picture is proposed that describes both tunneling dynamics in the deep insulating state and the observed scaling behavior in the vicinity of the critical point. Our findings offer a comprehensive description of dynamic Mott critical behavior and establish a deep connection between equilibrium and nonequilibrium phase transitions.
1 citations
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01 Jan 1994TL;DR: In this paper, the transition from several different types of quantum liquid to incompressible states such as the Mott insulator, spin gap states and the fractional quantum Hall state is discussed.
Abstract: Transitions from several different types of quantum liquid to incompressible states such as the Mott insulator, spin gap states and the fractional quantum Hall state are discussed. We analyze common features shared with these transitions as well as differences of the transitions originated from the difference in the nature of the quantum liquid.
1 citations
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TL;DR: In this paper, the spin-charge coupled phenomena in strongly correlated electron system on a frustration lattice, charge transport and dynamics have been investigated for the hole-doped spin-glass (Mott) insulator with pyrochlore structure, and a diffusive metallic transport with strongly renormalized electron mass shows up with no long range spin order, which is caused by strong antiferromagnetic spin fluctuation due to the geometrical frustration.
Abstract: To search for novel spin-charge coupled phenomena in the strongly correlated electron system on a frustration lattice, charge transport and dynamics have been investigated for the hole-doped spin-glass (Mott) insulator (Y$_{1-x}$Cd$_{x}$)$_{2}$Mo$_{2}$O$_{7}$ with pyrochlore structure. Coincident with the disappearance of spin-glass state by hole doping, a diffusive metallic transport with strongly renormalized electron mass shows up with no long range spin order, which is caused by strong antiferromagnetic spin fluctuation due to the geometrical frustration.
1 citations