Electrical detection of spin-polarized current in topological insulator Bi 1.5 Sb 0.5 Te 1.7 Se 1.3 Authors: Tae-Ha Hwang 1 , Hong-Seok Kim 1 , Hoil Kim 2,3 , Jun Sung Kim 2,3 , and Yong-Joo Doh 1† Affiliations: 1 Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea 2 Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang 790-784, Republic of Korea 3 Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea † Correspondence to: yjdoh@gist.ac.kr KEYWORDS: topological insulator, spin-momentum locking, electrical spin detection, non-local current