Loading...
research article
Surface states in lightly hole-doped sodium cobaltate Na1-yCoO2
2015
Using high-resolution angle-resolved photoemission spectroscopy (ARPES), surface states that were proposed to be useful for constructing the topological superconducting state in sodium cobaltates are experimentally explored. Two energy bands are observed to cross the Fermi level in the large x region. Through in situ surface electron doping, temperature-dependent ARPES measurements, and spin-resolved ARPES measurements, we demonstrate the existence of surface states due to less Na on the surface than in the bulk, as predicted in theory.
Type
research article
Web of Science ID
WOS:000353450000005
Authors
Yao, Meng-Yu
•
Miao, Lin
•
Wang, N. L.
•
•
Hasan, M. Z.
•
Guan, D. D.
•
Gao, C. L.
•
Liu, Canhua
•
Qian, Dong
•
Jia, Jin-feng
Publication date
2015
Published in
Volume
91
Issue
16
Article Number
161411(R)
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
June 23, 2015
Use this identifier to reference this record