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

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 - Mar 2001
Externally published	Yes
Event	8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) - Berkeley, CA, USA Duration: Aug 8 2000 → Aug 12 2000

ASJC Scopus subject areas

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

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10.1016/S0368-2048(00)00366-2

Cite this

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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",

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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.

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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

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