Observation of Quantum Anomalous Hall Effect and Exchange Interaction in Topological Insulator/Antiferromagnet Heterostructure - 文章详情页

作者：

收录：

EI Scopus SCIE PubMed

摘要：

Integration　of　a　quantum　anomalous　Hall　insulator　with　a　magnetically　ordered　material　provides　an　additional　degree　of　freedom　through　which　the　resulting　exotic　quantum　states　can　be　controlled.　Here,　an　experimental　observation　is　reported　of　the　quantum　anomalous　Hall　effect　in　a　magnetically-doped　topological　insulator　grown　on　the　antiferromagnetic　insulator　Cr2O3.　The　exchange　coupling　between　the　two　materials　is　investigated　using　field-cooling-dependent　magnetometry　and　polarized　neutron　reflectometry.　Both　techniques　reveal　strong　interfacial　interaction　between　the　antiferromagnetic　order　of　the　Cr(2)O(3)and　the　magnetic　topological　insulator,　manifested　as　an　exchange　bias　when　the　sample　is　field-cooled　under　an　out-of-plane　magnetic　field,　and　an　exchange　spring-like　magnetic　depth　profile　when　the　system　is　magnetized　within　the　film　plane.　These　results　identify　antiferromagnetic　insulators　as　suitable　candidates　for　the　manipulation　of　magnetic　and　topological　order　in　topological　insulator　films.

关键词：

antiferromagnet topological insulators quantum anomalous Hall effect

作者机构：

[ 1 ] [Pan, Lei]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 2 ] [Zhang, Peng]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 3 ] [Che, Xiaoyu]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 4 ] [He, Qing Lin]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 5 ] [Yin, Gen]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 6 ] [Shao, Qiming]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 7 ] [Deng, Peng]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 8 ] [Wu, Yingying]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 9 ] [Wang, Kang L.]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA
[ 10 ] [Grutter, Alexander]NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[ 11 ] [Disseler, Steven M.]NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[ 12 ] [Nozaki, Tomohiro]Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808579, Japan
[ 13 ] [Masashi, Sahashi]Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808579, Japan
[ 14 ] [Stern, Alex]Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[ 15 ] [Casas, Brian]Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[ 16 ] [Xia, Jing]Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[ 17 ] [Street, Mike]Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA
[ 18 ] [Binek, Christian]Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA
[ 19 ] [Zhang, Bing]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 20 ] [Han, Xiaodong]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 21 ] [He, Qing Lin]Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
[ 22 ] [Choi, Eun Sang]Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
[ 23 ] [Gilbert, Dustin A.]Univ Tennessee, Dept Mat Sci, Knoxville, TN 37996 USA
[ 24 ] [Shao, Qiming]Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
[ 25 ] [Liu, Xiaoyang]ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 200031, Peoples R China
[ 26 ] [Kou, Xufeng]ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 200031, Peoples R China
[ 27 ] [Chambers, Scott]Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, Richland, WA 99352 USA
[ 28 ] [Wang, Kang L.]Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[ 29 ] [Wang, Kang L.]Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA

通讯作者信息：

[Wang, Kang L.]Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA;;[Wang, Kang L.]Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA;;[Wang, Kang L.]Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA

电子邮件地址：

wang@ee.ucla.edu

查看成果更多字段

成果类型
所属机构

所有年份指定年份从至