Large spin-orbit coupling and helical spin textures in 2D heterostructure [Pb2BiS3][AuTe2]

被引：0
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作者：
L. Fang
J. Im
W. DeGottardi
Y. Jia
A. Glatz
K. A. Matveev
W.-K. Kwok
G. W. Crabtree
M. G. Kanatzidis
机构：
[1] Argonne National Laboratory,Materials Science Division
[2] Korea Research Institute of Chemical Technology,Advanced Material Division
[3] Northwestern University,Chemistry Department
[4] NUFAB,Department of Physics
[5] Northwestern University,undefined
[6] Northern Illinois University,undefined
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Scientific Reports | / 6卷
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摘要：
Two-dimensional heterostructures with strong spin-orbit coupling have direct relevance to topological quantum materials and potential applications in spin-orbitronics. In this work, we report on novel quantum phenomena in [Pb2BiS3][AuTe2], a new 2D strong spin-orbit coupling heterostructure system. Transport measurements reveal the spin-related carrier scattering is at odds with the Abrikosov-Gorkov model due to strong spin-orbit coupling. This is consistent with our band structure calculations which reveal a large spin-orbit coupling gap of εso = 0.21 eV. The band structure is also characterized by helical-like spin textures which are mainly induced by strong spin-orbit coupling and the inversion symmetry breaking in the heterostructure system.
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