TY - RPRT TI - Direct Visualization of Surface Spin-Flip Transition in MnBi 4 Te 7 AU - Ge, Wenbo AU - Kim, Jinwoong AU - Chan, Ying-Ting AU - Vanderbilt, David AU - Yan, Jiaqiang AU - Wu, Weida PY - 2022 DO - 10.1103/physrevlett.129.107204 UR - https://www.osti.gov/biblio/1885047 ID - 1885047 ER -