High-resolution angle-resolved photoemission study of the heavy-fermion superconductor UPt3
T. Ito, H. Kumigashira, Hyeong-Do Kim, T. Takahashi, N. Kimura, Y. Haga, E. Yamamoto, Y. Ōnuki, H. Harima
DOI 10.1103/PhysRevB.59.8923 · Physical Review B
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Abstract
We report high-resolution angle-resolved photoemission spectroscopy (HR ARPES) on single-crystal UPt3 together with a full-potential linearized augmented-plane-wave band-structure calculation for comparison. The experimental results show a narrow dispersionless U 5f band at EF and highly dispersive Pt 5d bands at higher binding energies. The observed U 5f band shows a systematic intensity variation in accordance with the crystal momentum, but is much narrower than the calculation, while the Pt 5d bands show a good quantitative agreement between the experiment and calculation. The present HR-ARPES observation suggests a substantial renormalization effect of the U 5f band due to the strong correlation.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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