Observation of high- Tc superconductivity in rectangular FeSe/ SrTiO3(110) monolayers

P. Zhang; X. L. Peng; T. Qian; P. Richard; X. Shi; J. Z. Ma; B. B. Fu; Y. L. Guo; Z. Q. Han; S. C. Wang; L. L. Wang; Q. K. Xue; J. P. Hu; Y. J. Sun; H. Ding

doi:10.1103/PhysRevB.94.104510

Observation of high- Tc superconductivity in rectangular FeSe/ SrTiO3(110) monolayers

P. Zhang
, X. L. Peng
, T. Qian
, P. Richard
, X. Shi
, J. Z. Ma
, B. B. Fu
, Y. L. Guo
, Z. Q. Han
, S. C. Wang
, L. L. Wang
, Q. K. Xue
, J. P. Hu
, Y. J. Sun
, H. Ding

CAS - Institute of Physics
Collaborative Innovation Center of Quantum Matter
Renmin University of China
Tsinghua University
Purdue University

科研成果: 期刊稿件 › 文章 › 同行评审

70 引用（Scopus）

摘要

We design a monolayer film of FeSe on SrTiO3(110) substrate [FeSe/STO(110)], with a C2 symmetry induced by epitaxial strain. Compared to FeSe on SrTiO3(001) substrate [FeSe/STO(001)], one of the in-plane lattice constants is reduced by 6%, to ∼3.67 Å. FeSe/STO(110) exhibits a large nearly isotropic superconducting gap of 16 meV filled around 60 K, similar to those obtained on FeSe/STO(001) films. Our results strongly suggest that the lattice C4 symmetry is not essential for reaching high Tc's in Fe-based superconductors and pose a new challenge to theory.

源语言	英语
文章编号	104510
期刊	Physical Review B
卷	94
期	10
DOI	https://doi.org/10.1103/PhysRevB.94.104510
出版状态	已出版 - 13 9月 2016
已对外发布	是

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title = "Observation of high- Tc superconductivity in rectangular FeSe/ SrTiO3(110) monolayers",

abstract = "We design a monolayer film of FeSe on SrTiO3(110) substrate [FeSe/STO(110)], with a C2 symmetry induced by epitaxial strain. Compared to FeSe on SrTiO3(001) substrate [FeSe/STO(001)], one of the in-plane lattice constants is reduced by 6\%, to ∼3.67 {\AA}. FeSe/STO(110) exhibits a large nearly isotropic superconducting gap of 16 meV filled around 60 K, similar to those obtained on FeSe/STO(001) films. Our results strongly suggest that the lattice C4 symmetry is not essential for reaching high Tc's in Fe-based superconductors and pose a new challenge to theory.",

author = "P. Zhang and Peng, \{X. L.\} and T. Qian and P. Richard and X. Shi and Ma, \{J. Z.\} and Fu, \{B. B.\} and Guo, \{Y. L.\} and Han, \{Z. Q.\} and Wang, \{S. C.\} and Wang, \{L. L.\} and Xue, \{Q. K.\} and Hu, \{J. P.\} and Sun, \{Y. J.\} and H. Ding",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = sep,

day = "13",

doi = "10.1103/PhysRevB.94.104510",

language = "English",

volume = "94",

journal = "Physical Review B",

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TY - JOUR

T1 - Observation of high- Tc superconductivity in rectangular FeSe/ SrTiO3(110) monolayers

AU - Zhang, P.

AU - Peng, X. L.

AU - Qian, T.

AU - Richard, P.

AU - Shi, X.

AU - Ma, J. Z.

AU - Fu, B. B.

AU - Guo, Y. L.

AU - Han, Z. Q.

AU - Wang, S. C.

AU - Wang, L. L.

AU - Xue, Q. K.

AU - Hu, J. P.

AU - Sun, Y. J.

AU - Ding, H.

PY - 2016/9/13

Y1 - 2016/9/13

N2 - We design a monolayer film of FeSe on SrTiO3(110) substrate [FeSe/STO(110)], with a C2 symmetry induced by epitaxial strain. Compared to FeSe on SrTiO3(001) substrate [FeSe/STO(001)], one of the in-plane lattice constants is reduced by 6%, to ∼3.67 Å. FeSe/STO(110) exhibits a large nearly isotropic superconducting gap of 16 meV filled around 60 K, similar to those obtained on FeSe/STO(001) films. Our results strongly suggest that the lattice C4 symmetry is not essential for reaching high Tc's in Fe-based superconductors and pose a new challenge to theory.

AB - We design a monolayer film of FeSe on SrTiO3(110) substrate [FeSe/STO(110)], with a C2 symmetry induced by epitaxial strain. Compared to FeSe on SrTiO3(001) substrate [FeSe/STO(001)], one of the in-plane lattice constants is reduced by 6%, to ∼3.67 Å. FeSe/STO(110) exhibits a large nearly isotropic superconducting gap of 16 meV filled around 60 K, similar to those obtained on FeSe/STO(001) films. Our results strongly suggest that the lattice C4 symmetry is not essential for reaching high Tc's in Fe-based superconductors and pose a new challenge to theory.

UR - https://www.scopus.com/pages/publications/84990984061

U2 - 10.1103/PhysRevB.94.104510

DO - 10.1103/PhysRevB.94.104510

M3 - Article

AN - SCOPUS:84990984061

SN - 2469-9950

VL - 94

JO - Physical Review B

JF - Physical Review B

IS - 10

M1 - 104510

ER -

Observation of high- Tc superconductivity in rectangular FeSe/ SrTiO3(110) monolayers

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