scholarly journals Angle-Resolved Photoemission Spectroscopy of Electron-Doped Cuprate Superconductors: Isotropic Electron-Phonon Coupling

2008 ◽  
Vol 101 (11) ◽  
Author(s):  
Seung Ryong Park ◽  
D. J. Song ◽  
C. S. Leem ◽  
Chul Kim ◽  
C. Kim ◽  
...  
Keyword(s):  
Cuprate Superconductors ◽  
Photoemission Spectroscopy ◽  
Phonon Coupling ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Electron Phonon Coupling

scholarly journals Electron-phonon coupling in potassium-doped graphene: Angle-resolved photoemission spectroscopy

2010 ◽  
Vol 81 (4) ◽  
Author(s):  
M. Bianchi ◽  
E. D. L. Rienks ◽  
S. Lizzit ◽  
A. Baraldi ◽  
R. Balog ◽  
...  
Keyword(s):  
Photoemission Spectroscopy ◽  
Phonon Coupling ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Electron Phonon Coupling ◽  
Doped Graphene

scholarly journals Dichotomy of superconductivity between monolayer FeS and FeSe

2019 ◽  
Vol 116 (49) ◽  
pp. 24470-24474
Author(s):  
Koshin Shigekawa ◽  
Kosuke Nakayama ◽  
Masato Kuno ◽  
Giao N. Phan ◽  
Kenta Owada ◽  
...  
Keyword(s):  
Molecular Beam ◽  
Photoemission Spectroscopy ◽  
Phonon Coupling ◽  
Superconducting Layer ◽  
Iron Based Superconductors ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Electron Phonon Coupling ◽  
Heavy Electron ◽  
Superconducting Pairing

The discovery of high-temperature (Tc) superconductivity in monolayer FeSe on SrTiO3 raised a fundamental question: Whether high Tc is commonly realized in monolayer iron-based superconductors. Tetragonal FeS is a key material to resolve this issue because bulk FeS is a superconductor with Tc comparable to that of isostructural FeSe. However, difficulty in synthesizing tetragonal monolayer FeS due to its metastable nature has hindered further investigations. Here we report elucidation of band structure of monolayer FeS on SrTiO3, enabled by a unique combination of in situ topotactic reaction and molecular-beam epitaxy. Our angle-resolved photoemission spectroscopy on FeS and FeSe revealed marked similarities in the electronic structure, such as heavy electron doping and interfacial electron–phonon coupling, both of which have been regarded as possible sources of high Tc in FeSe. However, surprisingly, high-Tc superconductivity is absent in monolayer FeS. This is linked to the weak superconducting pairing in electron-doped multilayer FeS in which the interfacial effects are absent. Our results strongly suggest that the cross-interface electron–phonon coupling enhances Tc only when it cooperates with the pairing interaction inherent to the superconducting layer. This finding provides a key insight to explore heterointerface high-Tc superconductors.

scholarly journals Angle-resolved photoemission spectroscopy of superconducting LiFeAs: Evidence for strong electron-phonon coupling

2011 ◽  
Vol 83 (13) ◽  
Author(s):  
A. A. Kordyuk ◽  
V. B. Zabolotnyy ◽  
D. V. Evtushinsky ◽  
T. K. Kim ◽  
I. V. Morozov ◽  
...  
Keyword(s):  
Photoemission Spectroscopy ◽  
Phonon Coupling ◽  
Strong Electron ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Electron Phonon Coupling
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