Quantized anomalous Hall insulator in a nanopatterned two-dimensional electron gas

Yongping Zhang; Chuanwei Zhang

首页> 外文期刊>Physical review >Quantized anomalous Hall insulator in a nanopatterned two-dimensional electron gas

【24h】

Quantized anomalous Hall insulator in a nanopatterned two-dimensional electron gas

机译：纳米图案二维电子气中的量化异常霍尔绝缘子

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

We propose that a quantum anomalous Hall insulator (QAHI) can be realized in a nanopatterned two dimensional electron gas (2DEG) with a small in-plane magnetic field and a high carrier density. The Berry curvatures originating from the in-plane magnetic field and Rashba and Dresselhaus spin-orbit coupling, in combination with a nanoscale honeycomb lattice potential modulation, lead to topologically nontrivial insulating states in the 2DEG without Landau levels. In the bulk insulating gaps, the anomalous Hall conductivity is quantized —e~2/h, corresponding to a finite Chern number — 1. There exists one gapless chiral edge state on each edge of a finite-size 2DEG.

机译：我们提出，可以在面内磁场小，载流子密度高的纳米图案二维电子气（2DEG）中实现量子异常霍尔绝缘子（QAHI）。源自面内磁场以及Rashba和Dresselhaus自旋轨道耦合的Berry曲率，与纳米级蜂窝晶格电势调制相结合，在没有Landau能级的2DEG中导致拓扑上不平凡的绝缘态。在整体绝缘间隙中，霍尔电导率的异常值被量化为-e〜2 / h，相当于有限的Chern数-1。在有限尺寸的2DEG的每个边缘上都存在一个无间隙的手性边缘态。

著录项

来源
《Physical review》 |2011年第8期|p.085123.1-085123.5|共5页
作者
Yongping Zhang; Chuanwei Zhang;
展开▼
作者单位

Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USA;

Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USA;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词
quantum hall effects; electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems; spin polarized transport in semiconductors; conductivity phenomena in semiconductors and insulators;

机译：量子霍尔效应多层;量子阱;介观和纳米级系统中的电子态和集体激发;半导体中的自旋极化传输;半导体和绝缘体的电导现象;

相似文献

外文文献
中文文献
专利

1. Chiral Two-dimensional Electron Gas In A Periodic Magnetic Field: Persistent Current And Quantized Anomalous Hall Effect [J] . M. Taillefumier, V. K. Dugaev, B. Canals, Physical review . 2008,第15期

机译：周期性磁场中的手性二维电子气：持续电流和量化的异常霍尔效应
2. Observation of the quantized Hall insulator in the quantum critical regime of the two-dimensional electron gas [J] . D. T. N. de Lang, L. A. Ponomarenko, A. de Visser, Physical review. B, Condensed Matter And Materials Physics . 2007,第3期

机译：二维电子气量子临界态下量子霍尔绝缘子的观察
3. Probing Landau quantization with the presence of insulator-quantum Hall transition in a GaAs two-dimensional electron system [J] . Chen KY, Chang YH, Liang CT, Journal of Physics. Condensed Matter . 2008,第29期

机译：GaAs二维电子系统中存在绝缘子-量子霍尔跃迁的Landau量子化研究
4. Quantization of the anomalous Hall conductance in a disordered magnetic Chern insulator [C] . Sergey Novokshonov Euro-Asian Symposium "Trends in Magnetism" . 2020

机译：无序磁挖掘绝缘子中异常霍尔电导的量化
5. CAPACITANCE MEASUREMENTS OF A QUANTIZED TWO-DIMENSIONAL ELECTRON GAS IN THE REGIME OF THE QUANTUM HALL EFFECT [D] . GOODALL, RANDAL KEITH 1984

机译：量子霍尔效应系统中二维电子气体的电容测量
6. Tunable insulator-quantum Hall transition in a weakly interacting two-dimensional electron system [O] . Shun-Tsung Lo, Yi-Ting Wang, Sheng-Di Lin, 2013

机译：弱相互作用二维电子系统中的可调绝缘子-量子霍尔跃迁
7. Quantized Anomalous Hall Insulator in a Nanopatterned Two-Dimensional Electron Gas [O] . Zhang, Yongping, Zhang, Chuanwei 2011

机译：纳米图形二维空间中的量子化异常霍尔绝缘子电子气

Quantized anomalous Hall insulator in a nanopatterned two-dimensional electron gas

摘要

著录项

相似文献

相关主题

期刊订阅