Spin-Selective Equilibration among Integer Quantum Hall Edge Channels

被引：5

作者：

Nicoll, Giorgio ^{[1
]}

Adam, Christoph ^{[1
]}

Roosli, Marc P. ^{[1
]}

Marki, Peter ^{[1
]}

Scharnetzky, Jan ^{[1
]}

Reichl, Christian ^{[1
]}

Wegscheider, Werner ^{[1
]}

Ihn, Thomas M. ^{[1
]}

Ensslin, Klaus ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 05期

关键词：

STATE SCATTERING; MAGNETOTRANSPORT; TRANSPORT; REGIME; QUANTIZATION; CONDUCTANCE; TEMPERATURE; CONTACTS; SYSTEMS;

D O I：

10.1103/PhysRevLett.128.056802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The equilibration between quantum Hall edge modes is known to depend on the disorder potential and the steepness of the edge. Modern samples with higher mobilities and setups with lower electron temperatures call for a further exploration of the topic. We develop a framework to systematically measure and analyze the equilibration of many (up to 8) integer edge modes. Our results show that spin-selective coupling dominates even for non-neighboring channels with parallel spin. Changes in magnetic field and bulk density let us control the equilibration until it is almost completely suppressed and dominated only by individual microscopic scatterers. This method could serve as a guideline to investigate and design improved devices, and to study fractional and other exotic states.

引用

页数：7

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