|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
20 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Study of the electron-phonon interaction in metal diborides MeB_2 (Me=Zr, Nb, Ta, Mg) by point-contact spectroscopy | | I. K. Yanson
; Yu. G. Naidyuk
; O. E. Kvitnitskaya
; V. V. Fisun
; N. L. Bobrov
; P. N. Chubov
; V. V. Ryabovol
; G. Behr
; W. N. Kang
; E.-M. Choi
; H.-J. Kim
; S.-I. Lee
; T. Aizawa
; S. Otani
; S.-L. Drechsler
; | | Date: |
26 Dec 2002 | | Journal: | Modern Physics Letters B, Vol. 17, Nos. 10-12 (2003) 657-666 | | Subject: | Superconductivity; Materials Science | cond-mat.supr-con cond-mat.mtrl-sci | | Affiliation: | ILTPE, Kharkiv), G. Behr (IFW Dresden), W. N. Kang, E.-M. Choi, H.-J. Kim, S.-I. Lee (Uni. Pohang), T. Aizawa, S. Otani (NIMS Tsukuba), and S.-L. Drechsler (IFW Dresden | | Abstract: | We review investigations of the electron-phonon interaction (EPI) in metal diborides MeB_2 (Me=Zr, Nb, Ta, Mg) by point-contact (PC) spectroscopy. For transition metal compounds the PC EPI functions were recovered and EPI parameter $lambdalesssim 0.1$ were estimated. The data are consistent with the measured surface phonon dispersion curves. The low $lambda$ value questions some reports about superconductivity in these compounds. Contrary, EPI in superconducting MgB_2 films manifests also in the PC spectra itself by virtue of an elastic EPI contribution to the excess current determined by the energy dependence of the superconducting order parameter. To analyse the phonon features in the PC spectra of MgB$_2$ a two-band model is exploited and the proximity effect in the {f k}-space is suggested. | | Source: | arXiv, cond-mat/0212599 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER