TY - JOUR
T1 - A Giant Bulk-Type Dresselhaus Splitting with 3D Chiral Spin Texture in IrBiSe
AU - Liu, Zhonghao
AU - Thirupathaiah, Setti
AU - Yaresko, Alexander N.
AU - Kushwaha, Satya
AU - Gibson, Quinn
AU - Xia, Wei
AU - Guo, Yanfeng
AU - Shen, Dawei
AU - Cava, Robert J.
AU - Borisenko, Sergey V.
N1 - Funding Information:
The authors are grateful to Martin Knupfer for the fruitful discussion. This work was supported under DFG grant 1912/7-1. Z.L. acknowledges support by the National Natural Science Foundation of China (11704394). S.T. acknowledges support by the Department of Science and Technology, India, through the INSPIRE-Faculty program (IFA14 PH-86). The work at Princeton University was supported by NSF MRSEC grant DMR 1420541 and the ARO MURI on topological insulators, grant W911NF-12-1-0461.
Publisher Copyright:
© 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/4/1
Y1 - 2020/4/1
N2 - Materials with giant spin splitting are desired for spintronic applications. The fabrications of spintronic devices from half metals with one spin direction are often hampered, however, by stray magnetic fields, domain walls, short spin coherence times, scattering on magnetic atoms or magnetically active interfaces, and other characteristics that come along with the magnetism. The surfaces of topological insulators, or Dirac/Weyl semimetals, could be an alternative, but production of high-quality thin films without the presence of the bulk states at the Fermi energy remains very challenging. Here, by utilizing angle-resolved photoemission spectroscopy, a record-high Dresselhaus spin–orbit splitting of the bulk state in the nonmagnetic IrBiSe is found. The band structure calculations indicate that the splitting band is fully spin-polarized with 3D chiral spin texture. As a source of spin-polarized electrons, lightly doped IrBiSe is expected to generate electric-field-controlled spin-polarized currents, free from back scattering, and could host triplet and Fulde–Ferrel–Larkin–Ovchinnikov (FFLO) superconductivity.
AB - Materials with giant spin splitting are desired for spintronic applications. The fabrications of spintronic devices from half metals with one spin direction are often hampered, however, by stray magnetic fields, domain walls, short spin coherence times, scattering on magnetic atoms or magnetically active interfaces, and other characteristics that come along with the magnetism. The surfaces of topological insulators, or Dirac/Weyl semimetals, could be an alternative, but production of high-quality thin films without the presence of the bulk states at the Fermi energy remains very challenging. Here, by utilizing angle-resolved photoemission spectroscopy, a record-high Dresselhaus spin–orbit splitting of the bulk state in the nonmagnetic IrBiSe is found. The band structure calculations indicate that the splitting band is fully spin-polarized with 3D chiral spin texture. As a source of spin-polarized electrons, lightly doped IrBiSe is expected to generate electric-field-controlled spin-polarized currents, free from back scattering, and could host triplet and Fulde–Ferrel–Larkin–Ovchinnikov (FFLO) superconductivity.
KW - IrBiSe
KW - angle-resolved photoemission spectroscopy
KW - band structure
KW - first-principles calculations
KW - spin texture
UR - http://www.scopus.com/inward/record.url?scp=85079713104&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85079713104&partnerID=8YFLogxK
U2 - 10.1002/pssr.201900684
DO - 10.1002/pssr.201900684
M3 - Article
AN - SCOPUS:85079713104
SN - 1862-6254
VL - 14
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
IS - 4
M1 - 1900684
ER -