Kinetic stabilization of 1D surface states near twin boundaries in noncentrosymmetric BiPd
Abstract
The search for one-dimensional (1D) topologically-protected electronic states has become an important research goal for condensed matter physics owing to their potential use in spintronic devices or as a building block for topologically non-trivial electronic states. Using low temperature scanning tunneling microscopy, we demonstrate the formation of 1D electronic states at twin boundaries at the surface of the noncentrosymmetric material BiPd. These twin boundaries are topological defects which separate regions with antiparallel orientations of the crystallographic {b} axis. We demonstrate that the formation of the 1D electronic states can be rationalized by a change in effective mass of two-dimensional surface states across the twin boundary. Our work therefore reveals a novel route towards designing 1D electronic states with strong spin-orbit coupling.
Citation
Yim , C M , Trainer , C , Maldonado Cid , A I , Braunecker , B , Yaresko , A , Peets , D C & Wahl , P 2018 , ' Kinetic stabilization of 1D surface states near twin boundaries in noncentrosymmetric BiPd ' , Physical Review Letters , vol. 121 , 26401 . https://doi.org/10.1103/PhysRevLett.121.206401
Publication
Physical Review Letters
Status
Peer reviewed
ISSN
0031-9007Type
Journal article
Description
CMY, CT and PW acknowledge funding from EPSRC through EP/I031014/1 and EP/L505079/1 and DCP acknowledges support from the National Natural Science Foundation of China (Project No. 11650110428).Collections
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