Abstract
We study the superconducting electronic structures of Nb3Al and MgB2 using high-resolution spectroscopy. The obtained spectrum of Nb3Al measured below Tc shows clear opening of the superconducting gap with a sharp pile up in the density of states and a shift of the leading edge. In addition, the spectrum shows a peak-dip-hump line shape expected from the strong-coupling theory. On the other hand, for MgB2, the superconducting-state spectrum measured at 5.4K shows a coherent peak with a shoulder structure, in sharp contrast to that expected from a single isotropic gap. The superconducting spectral shape of MgB2 can be explained in terms of a multicomponent gap.
| Original language | English |
|---|---|
| Pages (from-to) | 2141-2144 |
| Number of pages | 4 |
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 63 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2002 Dec 1 |
| Event | SNS 2001 - Chicago, IL, United States Duration: 2001 May 13 → 2002 May 17 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
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Photoemission results of intermetallic superconductors : Nb3Al and MgB2. / Yokoya, T.; Tsuda, S.; Chainani, A.; Kiss, T.; Hirata, K.; Takano, Y.; Togano, K.; Kito, H.; Ihara, H.; Shin, S.
In: Journal of Physics and Chemistry of Solids, Vol. 63, No. 12, 01.12.2002, p. 2141-2144.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Photoemission results of intermetallic superconductors
T2 - Nb3Al and MgB2
AU - Yokoya, T.
AU - Tsuda, S.
AU - Chainani, A.
AU - Kiss, T.
AU - Hirata, K.
AU - Takano, Y.
AU - Togano, K.
AU - Kito, H.
AU - Ihara, H.
AU - Shin, S.
PY - 2002/12/1
Y1 - 2002/12/1
N2 - We study the superconducting electronic structures of Nb3Al and MgB2 using high-resolution spectroscopy. The obtained spectrum of Nb3Al measured below Tc shows clear opening of the superconducting gap with a sharp pile up in the density of states and a shift of the leading edge. In addition, the spectrum shows a peak-dip-hump line shape expected from the strong-coupling theory. On the other hand, for MgB2, the superconducting-state spectrum measured at 5.4K shows a coherent peak with a shoulder structure, in sharp contrast to that expected from a single isotropic gap. The superconducting spectral shape of MgB2 can be explained in terms of a multicomponent gap.
AB - We study the superconducting electronic structures of Nb3Al and MgB2 using high-resolution spectroscopy. The obtained spectrum of Nb3Al measured below Tc shows clear opening of the superconducting gap with a sharp pile up in the density of states and a shift of the leading edge. In addition, the spectrum shows a peak-dip-hump line shape expected from the strong-coupling theory. On the other hand, for MgB2, the superconducting-state spectrum measured at 5.4K shows a coherent peak with a shoulder structure, in sharp contrast to that expected from a single isotropic gap. The superconducting spectral shape of MgB2 can be explained in terms of a multicomponent gap.
UR - http://www.scopus.com/inward/record.url?scp=0036901244&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036901244&partnerID=8YFLogxK
U2 - 10.1016/S0022-3697(02)00236-6
DO - 10.1016/S0022-3697(02)00236-6
M3 - Conference article
AN - SCOPUS:0036901244
VL - 63
SP - 2141
EP - 2144
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 12
ER -