磁性拓撲絕緣體

1、Magnetic film topological insulatorCONTENTSn1. Introduction of topological insulatorn2. Magnetism and topological insulatorn3. Recent experimental resultsn4. Conclusion and Outlook1. Introduction of topological insulatorWhat is the topological insulator1. Introduction of topological insulatortopolog

2、y1. Introduction of topological insulatortopological invariance1. Introduction of topological insulatorUniversal Band structure1. Introduction of topological insulatorBand structure of topological insulator1. Introduction of topological insulatorcharacter of topological insulatorDOI: 10.1126/science

3、.11480471. A full insulating gap in the bulk2. Exist gapless edge or surface states which are protected by time- reversal symmetry3. surface states with spin-momentum interlock; that is, the direction of electron spin is determined specifically by the momentum4. the electrons are mostly immune from

4、the scattering by nonmagnetic impurities and defects 2. Magnetism and topological insulatorThe quantum spin Hall effect and topological insulators2 D and 3D topological insulatorHgTe quantum wells, BiSb alloys, and Bi2Te3 and Bi2Se3 crystals2. Magnetism and topological insulator1. Broken time-revers

5、al symmetry2. Introduced the energy gap in the surface state3. Realized the Quantum Anomalous Hall EffectDOI: 10.1103/RevModPhys.82.3045QAHEOpened gap3. Recent experimental resultsGrowth and characterization of hybrid insulating ferromagnet-topologicalinsulator heterostructure devices APPLIED PHYSIC

6、S LETTERS 103, 202409 (2013)3. Recent experimental resultsMagnetic ordering in Cr-doped Bi2Se3 thin filmsdoi: 10.1209/0295-5075/107/57009doi: 10.1209/0295-5075/107/570093. Recent experimental results3. Recent experimental resultsExperimental Observation of the Quantum Anomalous Hall Effect in a Magn

7、etic Topological Insulator Science 340, 167 (2013)3. Recent experimental resultsScience 340, 167 (2013)3. Recent experimental resultsProximity Induced High-Temperature Magnetic Order in TopologicalInsulator - Ferrimagnetic Insulator Heterostructurein the proximity of a high Tc ferrimagnetic insulato

8、r (FMI), yttrium iron garnet(YIG or Y3Fe5O12). a magneticsignal from the Bi2Se3 up to 130 K is clearly observed by magneto-opticalKerr effect measurements.Nano Lett. 2014, 14, 345934653. Recent experimental resultsNano Lett. 2014, 14, 345934653. Recent experimental resultsExperimental Detection of a

9、 Majorana Mode in the core of a Magnetic Vortex inside a Topological Insulator-Superconductor Bi2Te3=NbSe2 HeterostructurePRL 114, 017001 (2015)3. Recent experimental resultsPRL 114, 017001 (2015)3. Recent experimental resultsPRL 114, 017001 (2015)3. Recent experimental resultsPRL 114, 017001 (2015)TSS4. Conclusion and Outlook300mev1.Element-doped