Results 11 to 20 of about 2,476 (40)

Resistivity bound for hydrodynamic bad metals

, 2017
We obtain a rigorous upper bound on the resistivity $\rho$ of an electron fluid whose electronic mean free path is short compared to the scale of spatial inhomogeneities. When such a hydrodynamic electron fluid supports a non-thermal diffusion process --
Hartnoll, Sean A., Lucas, Andrew
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Metallic surface states in a correlated d-electron topological Kondo insulator candidate FeSb2

, 2020
The resistance of a conventional insulator diverges as temperature approaches zero. The peculiar low temperature resistivity saturation in the 4f Kondo insulator (KI) SmB6 has spurred proposals of a correlation-driven topological Kondo insulator (TKI ...
Chen, Su-Di, Devereaux, Thomas P., Hashimoto, Makoto, He, Junfeng, He, Yu, Jia, Chunjing, Lu, Dong-Hui, Ma, Eric Yue, Mo, Sung-Kwan, Shen, Zhi-Xun, Tang, Shujie, Xu, Ke-Jun   +11 more
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Theory of universal incoherent metallic transport

, 2014
In an incoherent metal, transport is controlled by the collective diffusion of energy and charge rather than by quasiparticle or momentum relaxation.
Hartnoll, Sean A.
core   +1 more source

Correlated quantum phenomena in the strong spin-orbit regime

, 2014
We discuss phenomena arising from the combined influence of electron correlation and spin-orbit coupling, with an emphasis on emergent quantum phases and transitions in heavy transition metal compounds with 4d and 5d elements.
Balents, Leon, Chen, Gang, Kim, Yong Baek, Witczak-Krempa, William   +3 more
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Holographically smeared Fermi surface: Quantum oscillations and Luttinger count in electron stars

, 2010
We apply a small magnetic field to strongly interacting matter with a gravity dual description as an electron star. These systems are both metallic and quantum critical at low energies.
Hartnoll, Sean A., Hofman, Diego M., Tavanfar, Alireza   +2 more
core   +1 more source

Mixed-valence insulators with neutral Fermi surfaces

, 2018
Samarium hexaboride is a classic three-dimensional mixed valence system with a high-temperature metallic phase that evolves into a paramagnetic charge insulator below 40 kelvin.
Chowdhury, Debanjan, Senthil, T., Sodemann, Inti   +2 more
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Topological invariants, surface states, and interaction-driven phase transitions in correlated Kondo insulators with cubic symmetry

, 2014
We construct a lattice model for a cubic Kondo insulator consisting of one spin-degenerate $d$ and $f$ orbital at each lattice site. The odd-parity hybridization between the two orbitals permits us to obtain various trivial and topological insulating ...
Legner, Markus, Rüegg, Andreas, Sigrist, Manfred   +2 more
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Symmetry Enforced Self-Learning Monte Carlo Method Applied to the Holstein Model

, 2018
Self-learning Monte Carlo method (SLMC), using a trained effective model to guide Monte Carlo sampling processes, is a powerful general-purpose numerical method recently introduced to speed up simulations in (quantum) many-body systems.
Batrouni, George, Chen, Chuang, Liu, Junwei, Meng, Zi Yang, Scalettar, Richard, Xu, Xiao Yan   +5 more
core   +3 more sources

Quantum Electrodynamics in d=3 from the epsilon-expansion

, 2015
We study Quantum Electrodynamics in d=3 (QED_3) coupled to N_f flavors of fermions. The theory flows to an IR fixed point for N_f larger than some critical number N_f^c.
Di Pietro, Lorenzo, Komargodski, Zohar, Shamir, Itamar, Stamou, Emmanuel   +3 more
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Superconductivity from Valley Fluctuations and Approximate SO(4) Symmetry in a Weak Coupling Theory of Twisted Bilayer Graphene

, 2019
We develop a weak coupling approach to superconductivity in twisted bilayer graphene, starting from the Fermi liquid regime. A key observation is that near half filling, the fermiology consists of well nested Fermi pockets derived from opposite valleys ...
Vishwanath, Ashvin, You, Yi-Zhuang
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