Gong, G., Yang, H., Zhang, Q., Ding, C., Zhou, J., Chen, Y., Meng, F., Zhang, Z., Dong, W., Zheng, F., Zhang, P., Yang, L., Gu, L., Xue, Q. K., & Wang, L. (2019). Oxygen vacancy modulated superconductivity in monolayer FeSe on SrTi O3-δ. Physical Review B, 100(22), Article 224504. https://doi.org/10.1103/PhysRevB.100.224504
Gong, Guanming ; Yang, Haohao ; Zhang, Qinghua et al. / Oxygen vacancy modulated superconductivity in monolayer FeSe on SrTi O3-δ. In: Physical Review B. 2019 ; Vol. 100, No. 22.
@article{853eef3c6fe2435eba2c153e0b99ae10,
title = "Oxygen vacancy modulated superconductivity in monolayer FeSe on SrTi O3-δ",
abstract = "The monolayer FeSe on SrTiO3-δ exhibits a twofold enlarged pairing gap compared with other electron-doped FeSe, which is postulated to originate from cooperative effects of interface charge transfer and electron-boson interaction that relate closely to surface oxygen vacancies in SrTiO3. We create gradient oxygen vacancies on the surface of SrTiO3-δ substrates using direct current heating. Combining spatially resolved spectroscopy characterizations, we disclose gradient pairing gaps but negligible doping variation in monolayer FeSe on such substrates. As oxygen vacancy concentration gradually increases from the anode to cathode region, the pairing gap increases from 12 to 17 meV, right beyond the values of electron-doped FeSe. This modulation provides a platform for spatially resolved investigations to unveil the interplay between electronic correlation and electron-phonon interaction and their cooperation to drive superconductivity.",
author = "Guanming Gong and Haohao Yang and Qinghua Zhang and Cui Ding and Jingsong Zhou and Yujie Chen and Fanqi Meng and Zhiyu Zhang and Wenfeng Dong and Fawei Zheng and Ping Zhang and Lexian Yang and Lin Gu and Xue, {Qi Kun} and Lili Wang",
note = "Publisher Copyright: {\textcopyright} 2019 American Physical Society.",
year = "2019",
month = dec,
day = "5",
doi = "10.1103/PhysRevB.100.224504",
language = "English",
volume = "100",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "22",
}
Gong, G, Yang, H, Zhang, Q, Ding, C, Zhou, J, Chen, Y, Meng, F, Zhang, Z, Dong, W, Zheng, F, Zhang, P, Yang, L, Gu, L, Xue, QK & Wang, L 2019, 'Oxygen vacancy modulated superconductivity in monolayer FeSe on SrTi O3-δ', Physical Review B, vol. 100, no. 22, 224504. https://doi.org/10.1103/PhysRevB.100.224504
Oxygen vacancy modulated superconductivity in monolayer FeSe on SrTi O3-δ. / Gong, Guanming; Yang, Haohao; Zhang, Qinghua et al.
In:
Physical Review B, Vol. 100, No. 22, 224504, 05.12.2019.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Oxygen vacancy modulated superconductivity in monolayer FeSe on SrTi O3-δ
AU - Gong, Guanming
AU - Yang, Haohao
AU - Zhang, Qinghua
AU - Ding, Cui
AU - Zhou, Jingsong
AU - Chen, Yujie
AU - Meng, Fanqi
AU - Zhang, Zhiyu
AU - Dong, Wenfeng
AU - Zheng, Fawei
AU - Zhang, Ping
AU - Yang, Lexian
AU - Gu, Lin
AU - Xue, Qi Kun
AU - Wang, Lili
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/12/5
Y1 - 2019/12/5
N2 - The monolayer FeSe on SrTiO3-δ exhibits a twofold enlarged pairing gap compared with other electron-doped FeSe, which is postulated to originate from cooperative effects of interface charge transfer and electron-boson interaction that relate closely to surface oxygen vacancies in SrTiO3. We create gradient oxygen vacancies on the surface of SrTiO3-δ substrates using direct current heating. Combining spatially resolved spectroscopy characterizations, we disclose gradient pairing gaps but negligible doping variation in monolayer FeSe on such substrates. As oxygen vacancy concentration gradually increases from the anode to cathode region, the pairing gap increases from 12 to 17 meV, right beyond the values of electron-doped FeSe. This modulation provides a platform for spatially resolved investigations to unveil the interplay between electronic correlation and electron-phonon interaction and their cooperation to drive superconductivity.
AB - The monolayer FeSe on SrTiO3-δ exhibits a twofold enlarged pairing gap compared with other electron-doped FeSe, which is postulated to originate from cooperative effects of interface charge transfer and electron-boson interaction that relate closely to surface oxygen vacancies in SrTiO3. We create gradient oxygen vacancies on the surface of SrTiO3-δ substrates using direct current heating. Combining spatially resolved spectroscopy characterizations, we disclose gradient pairing gaps but negligible doping variation in monolayer FeSe on such substrates. As oxygen vacancy concentration gradually increases from the anode to cathode region, the pairing gap increases from 12 to 17 meV, right beyond the values of electron-doped FeSe. This modulation provides a platform for spatially resolved investigations to unveil the interplay between electronic correlation and electron-phonon interaction and their cooperation to drive superconductivity.
UR - http://www.scopus.com/inward/record.url?scp=85076557068&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.100.224504
DO - 10.1103/PhysRevB.100.224504
M3 - Article
AN - SCOPUS:85076557068
SN - 2469-9950
VL - 100
JO - Physical Review B
JF - Physical Review B
IS - 22
M1 - 224504
ER -
Gong G, Yang H, Zhang Q, Ding C, Zhou J, Chen Y et al. Oxygen vacancy modulated superconductivity in monolayer FeSe on SrTi O3-δ. Physical Review B. 2019 Dec 5;100(22):224504. doi: 10.1103/PhysRevB.100.224504
