Heavy fermions in UPt3

Zwicknagl, G.; Yaresko, A. N.; Fulde, P.

doi:10.1016/S0921-4526(01)01336-9

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Heavy fermions in UPt₃

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Yaresko, A. N.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Fulde, P.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Zwicknagl, G., Yaresko, A. N., & Fulde, P. (2002). Heavy fermions in UPt₃. Physica B, 312, 304-306. doi:10.1016/S0921-4526(01)01336-9.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-31A9-E

Abstract

Quantum chemical calculations on molecules containing U ions as well as recent experiments on UPd2Al3 show that some of the 5f states may be itinerant while others remain localized. Based on these findings we present a theory for the origin of the heavy quasi-particles in UPt3. The latter are described as f-derived band states with effective masses renormalized by intra-atomic excitations of the localized f electrons. (C) 2002 Elsevier Science B.V. All rights reserved.