Open AccessRevealing hidden spin-momentum locking in a high-temperature cuprate superconductor
Author(s) -
Kenneth Gotlieb,
Chiu-Yun Lin,
Maksym Serbyn,
Wentao Zhang,
Christopher L. Smallwood,
Chris Jozwiak,
Hiroshi Eisaki,
Z. Hussain,
Ashvin Vishwanath,
Alessandra Lanzara
Publication year - 2018
Publication title -
science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 12.556
H-Index - 1186
eISSN - 1095-9203
pISSN - 0036-8075
DOI - 10.1126/science.aao0980
Subject(s) - cuprate , condensed matter physics , spin (aerodynamics) , physics , coupling (piping) , superconductivity , photoemission spectroscopy , topological insulator , spin–orbit interaction , momentum (technical analysis) , quantum mechanics , materials science , spectral line , finance , thermodynamics , economics , metallurgy
Revealing spin-orbit coupling in a cuprate Strong coupling between the spin and orbital degrees of freedom is crucial in generating the exotic band structure of topological insulators. The combination of spin-orbit coupling with electronic correlations could lead to exotic effects; however, these two types of interactions are rarely found to be strong in the same material. Gotliebet al. used spin- and angle-resolved photoemission spectroscopy to map out the spin texture in the cuprate Bi2212. Surprisingly, they found signatures of spin-momentum locking, not unlike that seen in topological insulators. Thus, in addition to strong electronic correlations, this cuprate also has considerable spin-orbit coupling.Science , this issue p.1271
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