Numerical study of vortex system quantum melting
M. V. Zyubin, I. A. Rudnev, and V. A. Kashurnikov
TL;DR
This paper presents a numerical investigation into quantum melting of vortex systems in 2D superconductors, highlighting quantum fluctuations' dominance at low temperatures and proposing a model for quantum vortex behavior.
Contribution
It introduces a phenomenological model incorporating quantum vortex fluctuations and demonstrates quantum melting transitions via quantum Monte Carlo simulations.
Findings
Quantum fluctuations dominate thermal fluctuations at low temperatures.
Quantum melting transition is possible where thermal melting is unlikely.
The model successfully captures quantum effects in vortex systems.
Abstract
We report a numerical study of the vortex system in the two dimensional II-type superconductors. We have proposed a phenomenological model that takes into account quantum fluctuations of Abrikosov's vortices. The results of the quantum Monte-Carlo simulations by the SSE algorithm show that the thermal fluctuations are dominated by quantum fluctuations at low temperatures. In particular, we demonstrate the possibility of the quantum melting transition for vortex system in the temperature region where thermal melting transition is improbable.
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