TY - JOUR
T1 - High-temperature superconductivity and lattice relaxation in lithium-deposited FeSe on SrTiO3
AU - Phan, Giao N.
AU - Nakayama, Kosuke
AU - Kanayama, Shota
AU - Kuno, Masato
AU - Sugawara, Katsuaki
AU - Sato, Takafumi
AU - Takahashi, Takashi
N1 - Funding Information:
We thank N. Yamamura and M. Sato for their assistance in the ARPES measurements. This work was supported by grants from JSPS KAKENHI Grant Numbers JP15H02105, JP25287079, JP15H05853, and JP25107003, the Program for Key Interdisciplinary Research, and the Murata Science Foundation.
Publisher Copyright:
©2017 The Physical Society of Japan.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017
Y1 - 2017
N2 - We studied the effect of strain, interface, and electron doping on the superconductivity in thin FeSe film on SrTiO3 by angle-resolved photoemission spectroscopy (ARPES). We observed the superconductivity with Tc as high as 43 K in a lithium (Li) deposited heavily electron-doped multilayer FeSe film. We found a significant relaxation of tensile strain at the surface in contrast to the case of potassium (K) deposition, although the high-Tc superconductivity is commonly observed in both cases. We discuss the interplay among carrier doping, tensile strain, and high-Tc superconductivity by comparing ARPES results on Li- and K-deposited FeSe films.
AB - We studied the effect of strain, interface, and electron doping on the superconductivity in thin FeSe film on SrTiO3 by angle-resolved photoemission spectroscopy (ARPES). We observed the superconductivity with Tc as high as 43 K in a lithium (Li) deposited heavily electron-doped multilayer FeSe film. We found a significant relaxation of tensile strain at the surface in contrast to the case of potassium (K) deposition, although the high-Tc superconductivity is commonly observed in both cases. We discuss the interplay among carrier doping, tensile strain, and high-Tc superconductivity by comparing ARPES results on Li- and K-deposited FeSe films.
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U2 - 10.7566/JPSJ.86.033706
DO - 10.7566/JPSJ.86.033706
M3 - Article
AN - SCOPUS:85014683567
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 3
M1 - 033706
ER -