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arXiv · 1807.09249

Voltage induced metal-insulator transition in a one dimensional charge density wave

Giuliano Chiriacò·Andrew J. Millis
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Abstract

We present a theoretical investigation of the voltage-driven metal insulator transition based on solving coupled Boltzmann and Hartree-Fock equations to determine the insulating gap and the electron distribution in a model system -- a one dimensional charge density wave. Electric fields that are parametrically small relative to energy gaps can shift the electron distribution away from the momentum-space region where interband relaxation is efficient, leading to a highly non-equilibrium quasiparticle distribution even in the absence of Zener tunneling. The gap equation is found to have regions of multistability; a non-equilibrium analog of the free energy is constructed and used to determine which phase is preferred.

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Giuliano Chiriacò, Andrew J. Millis. 2018-07-24. Voltage induced metal-insulator transition in a one dimensional charge density wave. https://doi.org/10.1103/physrevb.98.205152

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