Magnetically doped semiconducting topological insulators

Logarithmic singularities and quantum oscillations in magnetically doped topological insulators

D. Nandi,1 Inti Sodemann,2, 3 K. Shain,1 G.H. Lee,1, 4 K. Huang,1 Cui-Zu Chang,5, 6 Yunbo Ou,5 S.P. Lee,7, 8 J. Ward,1 J.S. Moodera,5 P. Kim,1 and A. Yacoby1 Department of Physics, Harvard University, Cambridge, MA 02138, USA Max-Planck Institute for the Physics of Complex Systems, D-01187 Dresden, Germany Department of Physics, Massachussetts Institute of Technology, Cambridge, MA 02139, USA D...

Stability, electronic, and magnetic properties of the magnetically doped topological insulators Bi2Se3, Bi2Te3, and Sb2Te3

Jian-Min Zhang,1 Wenmei Ming,2 Zhigao Huang,3 Gui-Bin Liu,4 Xufeng Kou,5 Yabin Fan,5 Kang L. Wang,5 and Yugui Yao4,1,* 1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 2Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, USA 3Department of Physics, Fujian Normal Uni...

Ferromagnetism of magnetically doped topological insulators in CrxBi2− xTe3 thin films

We investigated the effect of magnetic doping on magnetic and transport properties of Bi2Te3thin films. CrxBi2−xTe3 thin films with x = 0.03, 0.14, and 0.29 were grown epitaxially on mica substrate with low surface roughness (∼0.4 nm). It is found that Cr is an electron acceptor in Bi2Te3 and increases the magnetization of CrxBi2−xTe3. When x = 0.14 and 0.29,ferromagnetism appears in CrxBi2−xTe...

Manipulating surface-related ferromagnetism in modulation-doped topological insulators.

A new class of devices based on topological insulators (TI) can be achieved by the direct engineering of the time-reversal-symmetry (TRS) protected surface states. In the meantime, a variety of interesting phenomena are also expected when additional ferromagnetism is introduced to the original topological order. In this Letter, we report the magnetic responses from the magnetically modulation-d...

Topological insulators