Microwave spectroscopic observation of a Wigner solid within the ν=1/2 fractional quantum Hall effect

被引：8

作者：

Hatke, A. T. ^{[1
,3
]}

Liu, Yang ^{[2
]}

Engel, L. W. ^{[1
]}

Pfeiffer, L. N. ^{[2
]}

West, K. W. ^{[2
]}

Baldwin, K. W. ^{[2
]}

Shayegan, M. ^{[2
]}

机构：

[1] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[3] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 04期

基金：

美国国家科学基金会;

关键词：

MAGNETIC-FIELDS; ELECTRON-SYSTEM; CONDUCTIVITY; CRYSTAL; STATE; CRYSTALLIZATION; LIQUID; WELLS;

D O I：

10.1103/PhysRevB.95.045417

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the microwave spectra of a wide quantum well for Landau level fillings nu, just below 1/2, under conditions where the nu = 1/2 fractional quantum Hall effect (FQHE) is present. One resonance in the spectra exhibits intensity variations with. in striking agreement with that expected for a pinning mode of a Wigner solid of quasiholes of this FQHE state. This resonance is also quite sensitive to asymmetrization of the growth-direction charge distribution in the quantum well by gate bias. Another resonance in the spectra is associated with a different bilayer Wigner solid that also exists at much lower. than the 1/2 FQHE, and that appears to coexist with the 1/2 quasihole solid.

引用

页数：5

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