Towards spin-polarized two-dimensional electron gas at a surface of an antiferromagnetic insulating oxide

Rohan Mishra,1,2,3,* Young-Min Kim,2,4,5 Qian He,2 Xing Huang,3 Seong Keun Kim,6,7 Michael A. Susner,2 Anand Bhattacharya,6,8 Dillon D. Fong,6 Sokrates T. Pantelides,1,2 and Albina Y. Borisevich2 1Deparment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA 4Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea 5Department of Energy Science, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea 6Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA 7Center for Electronic Materials, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea 8Nano Science and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439, USA (Received 11 April 2016; revised manuscript received 20 May 2016; published 18 July 2016)