Remnant Geometric Hall Response in a Quantum Quench
نویسندگان
چکیده
منابع مشابه
Remnant Geometric Hall Response in a Quantum Quench.
Out-of-equilibrium systems can host phenomena that transcend the usual restrictions of equilibrium systems. Here, we unveil how out-of-equilibrium states, prepared via a quantum quench in a two-band system, can exhibit a nonzero Hall-type current-a remnant Hall response-even when the instantaneous Hamiltonian is time reversal symmetric (in contrast to equilibrium Hall currents). Interestingly, ...
متن کاملSupplementary Material to: Remnant geometric Hall response in a quantum quench
We provide a detailed calculation, and description of the quench and probe protocol described in the letter. The protocol described in letter consists of the following steps: (1) prepare the state in the ground state of some Hamiltonian |ψ0〉; (2) at t = 0 quench a parameter in that Hamiltonian; (3) pulse the evolved wave function at t = t1 (called |ψ1〉) by letting k → k − eA; and (4) measure Ha...
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Out-of-equilibrium systems can host phenomena that transcend the usual restrictions of equilibrium systems. Here we unveil how out-of-equilibrium states, prepared via a quantum quench, can exhibit a non-zero Hall-type response that persists at long times, and even when the instantaneous Hamiltonian is time reversal symmetric; both these features starkly contrast with equilibrium Hall currents. ...
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We study the forces that act on a point flux carrying an integral number of flux units in quantum Hall fluids. Forces due to external fields, Lorentz and Magnus type forces, and the forces due to mutual interaction of point fluxes are considered. The forces are related to the adiabatic curvature associated with families of Landau Hamiltonians. The problem displays distinct features of the quant...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2016
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.117.235302