Valley-splitting and valley-dependent inter-Landau-level optical transitions in monolayer MoS2 quantum Hall systems

Rui-Lin Chu,1 Xiao Li,2 Sanfeng Wu,3 Qian Niu,2 Wang Yao,4 Xiaodong Xu,3,5 and Chuanwei Zhang1,* 1Department of Physics, The University of Texas at Dallas, Richardson, Texas 75080, USA 2Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA 3Department of Physics, University of Washington, Seattle, Washington 98195, USA 4Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China 5Department of Material Science and Engineering, University of Washington, Seattle, Washington 98195, USA (Received 31 January 2014; revised manuscript received 14 July 2014; published 28 July 2014)