Signatures for Wigner Crystal Formation in the Chemical Potential of a Two-Dimensional Electron System

被引：30

作者：

Zhang, Ding ^{[1
]}

Huang, Xuting ^{[1
]}

Dietsche, Werner ^{[1
]}

von Klitzing, Klaus ^{[1
]}

Smet, Jurgen H. ^{[1
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 07期

关键词：

MAGNETIC-FIELD; TRANSITION; GAS; COMPRESSIBILITY; CRYSTALLIZATION; LOCALIZATION; ENERGY; STATE;

D O I：

10.1103/PhysRevLett.113.076804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the evolution of the chemical potential of a two-dimensional electron system (2DES) as a function of density at a fixed magnetic field. By using a bilayer system, changes in the chemical potential of one 2DES are determined from the density variation induced in the second, nearby 2DES. At high magnetic fields around a filling factor of nu = 1 or nu = 2, the chemical potential jump associated with the condensation in a quantum Hall state exhibits two anomalies symmetrically located around these integer filling factors. They are attributed to the formation of a 2D Wigner crystal of quasiparticles.

引用

页数：5

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