Precision mapping the topological bands of 2D spin-orbit coupling with microwave spin-injection spectroscopy

被引：0

作者：

XiaoTian Xu ^{[1
,2
]}

ChangRui Yi ^{[1
,2
]}

BaoZong Wang ^{[1
,2
,3
,4
]}

Wei Sun ^{[1
,2
]}

Youjin Deng ^{[1
,2
]}

XiongJun Liu ^{[3
,4
]}

Shuai Chen ^{[1
,2
]}

JianWei Pan ^{[1
,2
]}

机构：

[1] Shanghai Branch, National Research Center for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China

[2] Chinese Academy of Sciences Center for Excellence:Quantum Information and Quantum Physics, University of Science and Technology of China

[3] International Center for Quantum Materials, School of Physics, Peking University

[4] Collaborative Innovation Center of Quantum Matter

来源：

ScienceBulletin | 2018年 / 63卷 / 22期

关键词：

2D spin-orbit coupling; Microwave spin-injection spectroscopy; Spin polarization; Topological band; Topological phase transition;

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

To investigate the band structure is one of the key approaches to study the fundamental properties of a novel material.We report here the precision band mapping of a 2-dimensional（2D） spin-orbit（SO） coupling in an optical lattice.By applying the microwave spin-injection spectroscopy, the band structure and spin-polarization distribution are achieved simultaneously.The band topology is also addressed with observing the band gap close and re-open at the Dirac points.Furthermore, the lattice depth and the Raman coupling strength are precisely calibrated with relative errors in the order of 10-3.Our approach could also be applied for exploring the exotic topological phases with even higher dimensional system.

引用

页码：1464 / 1469

页数：6