Probing the band topology of mercury telluride through weak localization and antilocalization

Probing the band topology of mercury telluride through weak localization and antilocalization
复制标题

通过弱局域化和反局域化探测碲化汞的能带拓扑

DOI:
10.1088/0268-1242/27/12/124006
复制
发表时间:
2012
影响因子:
1.9
通讯作者:
K. Richter
K. Richter
中科院分区:
工程技术4区
文献类型:
--
作者:
V. Krueckl;K. Richter

文献摘要

参考文献

被引文献

相似文献

我们分析了弱局域化 (WL) 和弱反局域化 (WAL) 对 HgTe/CdTe 量子阱电子传输的影响。我们证明,为了增加费米能量,如果可以忽略来自体积和结构反转不对称性的自旋轨道相互作用,则具有反转能带排序的扩散系统的磁导具有从 WL 到 WAL 并返回的转变。这以及磁导分布中的额外分裂是反转能带排序产生的 Berry 相的特征,并且在具有传统排序的异质结构中不存在。在存在自旋轨道相互作用的情况下,两种能带拓扑都表现出 WAL,这对于具有反转能带排序的量子阱来说明显是能量相关的。这可以通过将哈密顿量依赖于能量分解为两个块来解释。
We analyze the effect of weak localization (WL) and weak antilocalization (WAL) in the electronic transport through HgTe/CdTe quantum wells. We show that for increasing Fermi energy, the magnetoconductance of a diffusive system with inverted band ordering features a transition from WL to WAL and back, if spin–orbit interactions from bulk and structure inversion asymmetries can be neglected. This, and an additional splitting in the magnetoconductance profile, is a signature of the Berry phase arising for inverted band ordering and is not present in heterostructures with conventional ordering. In the presence of spin–orbit interaction, both band topologies exhibit WAL, which is distinctly energy dependent for quantum wells with inverted band ordering. This can be explained by an energy-dependent decomposition of the Hamiltonian into two blocks.
DOI: 10.1103/physrevlett.97.146805
发表时间: 2006-10-06
影响因子: 8.6
作者:
McCann, E.;Kechedzhi, K.;Altshuler, B. L.
通讯作者: Altshuler, B. L.
DOI: 10.1103/physrevlett.95.146802
发表时间: 2005-09-30
影响因子: 8.6
作者:
Kane, CL;Mele, EJ
通讯作者: Mele, EJ
DOI: 10.1103/physrevlett.107.086803
发表时间: 2011-08-17
影响因子: 8.6
作者:
Krueckl, Viktor;Richter, Klaus
通讯作者: Richter, Klaus
DOI: 10.1103/physrevb.80.235431
发表时间: 2009-12-01
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
Gmitra, M.;Konschuh, S.;Fabian, J.
通讯作者: Fabian, J.
DOI: --
发表时间: 2007
期刊: Journal of Magnetism and Magnetic Materials 310
影响因子: --
作者:
A.Tanaka;X.Hu
通讯作者: X.Hu