Non-Fermi-Liquid Behavior in Metallic Quasicrystals with Local Magnetic Moments
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Contributors
Abstract
Motivated by the intrinsic non-Fermi-liquid behavior observed in the heavy-fermion quasicrystal Au51Al34Yb15, we study the low-temperature behavior of dilute magnetic impurities placed in metallic quasicrystals. We find that a large fraction of the magnetic moments are not quenched down to very low temperatures T, leading to a power-law distribution of Kondo temperatures P(TK)∼TKα-1, with a nonuniversal exponent α, in a remarkable similarity to the Kondo-disorder scenario found in disordered heavy-fermion metals. For α<1, the resulting singular P(TK) induces non-Fermi-liquid behavior with diverging thermodynamic responses as T→0.
Details
Original language | English |
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Article number | 036403 |
Journal | Physical review letters |
Volume | 115 |
Issue number | 3 |
Publication status | Published - 14 Jul 2015 |
Peer-reviewed | Yes |