Ultra-high resolution photoemission spectroscopy of simple metals: Direct observation of superconducting gap and phonon-induced fine structures

T. Kiss; T. Yokoya; A. Chainani; S. Shin

doi:10.1016/S0368-2048(00)00366-2

Ultra-high resolution photoemission spectroscopy of simple metals: Direct observation of superconducting gap and phonon-induced fine structures

T. Kiss
, T. Yokoya
, A. Chainani
, S. Shin

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

We have performed ultra-high resolution photoemission spectroscopy of simple metals, Nb (T_c = 9.26 K) and Pb (T_c = 7.19 K) in order to study the changes in the density of states across the transition temperatures. The spectra of both compounds measured at 5.3 K show an opening of the superconducting gap accompanied by a leading-edge shift and an appearance of a sharp peak just below the Fermi level. Furthermore, the Pb spectrum clearly shows peak-dip-hump structures due to strong electron-phonon coupling, as seen in the high-T_c cuprates. This makes it a characteristic of strong-coupling superconductivity.

Original language	English
Pages (from-to)	635-639
Number of pages	5
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	114-116
DOIs	https://doi.org/10.1016/S0368-2048(00)00366-2
Publication status	Published - 2001 Mar
Event	8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) - Berkeley, CA, USA Duration: 2000 Aug 8 → 2000 Aug 12

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/S0368-2048(00)00366-2

Cite this

@article{502eb35a2ff34f75b944de554ef218e2,

title = "Ultra-high resolution photoemission spectroscopy of simple metals: Direct observation of superconducting gap and phonon-induced fine structures",

abstract = "We have performed ultra-high resolution photoemission spectroscopy of simple metals, Nb (Tc = 9.26 K) and Pb (Tc = 7.19 K) in order to study the changes in the density of states across the transition temperatures. The spectra of both compounds measured at 5.3 K show an opening of the superconducting gap accompanied by a leading-edge shift and an appearance of a sharp peak just below the Fermi level. Furthermore, the Pb spectrum clearly shows peak-dip-hump structures due to strong electron-phonon coupling, as seen in the high-Tc cuprates. This makes it a characteristic of strong-coupling superconductivity.",

author = "T. Kiss and T. Yokoya and A. Chainani and S. Shin",

note = "Funding Information: This work was supported by grants from the Ministry of Education, Science, Sports and Culture of Japan.; 8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) ; Conference date: 08-08-2000 Through 12-08-2000",

year = "2001",

month = mar,

doi = "10.1016/S0368-2048(00)00366-2",

language = "English",

volume = "114-116",

pages = "635--639",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Ultra-high resolution photoemission spectroscopy of simple metals

T2 - 8th International Conference on Electronic Spectroscopy and Structure (ICESS-8)

AU - Kiss, T.

AU - Yokoya, T.

AU - Chainani, A.

AU - Shin, S.

N1 - Funding Information: This work was supported by grants from the Ministry of Education, Science, Sports and Culture of Japan.

PY - 2001/3

Y1 - 2001/3

N2 - We have performed ultra-high resolution photoemission spectroscopy of simple metals, Nb (Tc = 9.26 K) and Pb (Tc = 7.19 K) in order to study the changes in the density of states across the transition temperatures. The spectra of both compounds measured at 5.3 K show an opening of the superconducting gap accompanied by a leading-edge shift and an appearance of a sharp peak just below the Fermi level. Furthermore, the Pb spectrum clearly shows peak-dip-hump structures due to strong electron-phonon coupling, as seen in the high-Tc cuprates. This makes it a characteristic of strong-coupling superconductivity.

AB - We have performed ultra-high resolution photoemission spectroscopy of simple metals, Nb (Tc = 9.26 K) and Pb (Tc = 7.19 K) in order to study the changes in the density of states across the transition temperatures. The spectra of both compounds measured at 5.3 K show an opening of the superconducting gap accompanied by a leading-edge shift and an appearance of a sharp peak just below the Fermi level. Furthermore, the Pb spectrum clearly shows peak-dip-hump structures due to strong electron-phonon coupling, as seen in the high-Tc cuprates. This makes it a characteristic of strong-coupling superconductivity.

UR - https://www.scopus.com/pages/publications/0035276138

UR - https://www.scopus.com/pages/publications/0035276138#tab=citedBy

U2 - 10.1016/S0368-2048(00)00366-2

DO - 10.1016/S0368-2048(00)00366-2

M3 - Conference article

AN - SCOPUS:0035276138

SN - 0368-2048

VL - 114-116

SP - 635

EP - 639

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

Y2 - 8 August 2000 through 12 August 2000

ER -

Ultra-high resolution photoemission spectroscopy of simple metals: Direct observation of superconducting gap and phonon-induced fine structures

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this