Direct observation of a Fermi surface and superconducting gap in LuNi2B2C
dc.contributor.author | Starowicz, P. | |
dc.contributor.author | Liu, C. | |
dc.contributor.author | Khasanov, R. | |
dc.contributor.author | Kondo, Takeshi | |
dc.contributor.author | Samolyuk, G. D. | |
dc.contributor.author | Gardenghi, D. | |
dc.contributor.author | Lee, Y. | |
dc.contributor.author | Ohta, T. | |
dc.contributor.author | Harmon, B. N. | |
dc.contributor.author | Canfield, Paul | |
dc.contributor.author | Bud'ko, Sergey L. | |
dc.contributor.author | Rotenberg, E. | |
dc.contributor.author | Kaminski, Adam | |
dc.contributor.department | Physics and Astronomy | |
dc.date.accessioned | 2022-07-27T22:58:41Z | |
dc.date.available | 2022-07-27T22:58:41Z | |
dc.date.issued | 2008-04-01 | |
dc.description.abstract | We measured the Fermi surface (FS), band dispersion, and superconducting gap in LuNi2B2C using angle resolved photoemission spectroscopy. Experimental data were compared to the tight-binding version of the linear muffin-tin orbital (LMTO) method and linearized augmented plane-wave (LAPW) calculations. We found reasonable agreement between the two calculations and experimental data. The measured FS exhibits large parallel regions with a nesting vector that agrees with a previous positron annihilation study and calculations of the generalized susceptibility. The measured dispersion curves also agree reasonably well with the TB-LMTO calculations, although with some differences in the strength of the hybridization. In addition, the spectrum in the superconducting state revealed a 2 meV superconducting gap. The data also clearly show the presence of a coherent peak above the chemical potential mu, which originates from thermally excited electrons above the energy of 2 Delta. This feature was not previously observed in the Lu-based material. | |
dc.description.comments | This article is published as Starowicz, P., C. Liu, R. Khasanov, T. Kondo, G. Samolyuk, D. Gardenghi, Y. Lee et al. "Direct observation of a Fermi surface and superconducting gap in LuNi 2 B 2 C." Physical Review B 77, no. 13 (2008): 134520. DOI: 10.1103/PhysRevB.77.134520. Copyright 2008 American Physical Society. Posted with permission. | |
dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/Qr9mdB5r | |
dc.language.iso | en | |
dc.publisher | American Physical Society | |
dc.source.uri | https://doi.org/10.1103/PhysRevB.77.134520 | * |
dc.title | Direct observation of a Fermi surface and superconducting gap in LuNi2B2C | |
dc.type | Article | |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | c5a8128b-7d98-4b8f-92d7-b1385e345713 | |
relation.isOrgUnitOfPublication | 4a05cd4d-8749-4cff-96b1-32eca381d930 |
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