Kavli Institute for Theoretical Physics, University of California Santa Barbara, CA 93106, USA.
Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Sci Rep. 2017 Mar 16;7:44044. doi: 10.1038/srep44044.
We study numerically the voltage-induced breakdown of a Mott insulating phase in a system of charged classical particles with long-range interactions. At half-filling on a square lattice this system exhibits Mott localization in the form of a checkerboard pattern. We find universal scaling behavior of the current at the dynamic Mott insulator-metal transition and calculate scaling exponents corresponding to the transition. Our results are in agreement, up to a difference in universality class, with recent experimental evidence of a dynamic Mott transition in a system of interacting superconducting vortices.
我们通过数值研究了在具有长程相互作用的带电经典粒子系统中，Mott 绝缘相的电压诱导击穿。在正方形晶格的半填充情况下，该系统以棋盘图案的形式表现出 Mott 局域化。我们发现了动态 Mott 绝缘-金属相变时电流的普适标度行为，并计算了相应的相变标度指数。我们的结果与最近关于相互作用超导涡旋系统中动态 Mott 相变的实验证据一致，只是在普适类上存在差异。
