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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Non-Fermi-Liquid Behavior in Metallic Quasicrystals with Local Magnetic Moments

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Andrade, Eric C. [1] ; Jagannathan, Anuradha [2] ; Miranda, Eduardo [3] ; Vojta, Matthias [4] ; Dobrosavljevic, Vladimir [5, 6]
Total Authors: 5
[1] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP - Brazil
[2] Univ Paris 11, CNRS, Phys Solides Lab, UMR 8502, F-91405 Orsay - France
[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[4] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden - Germany
[5] Florida State Univ, Dept Phys, Tallahassee, FL 32306 - USA
[6] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 - USA
Total Affiliations: 6
Document type: Journal article
Source: Physical Review Letters; v. 115, n. 3 JUL 14 2015.
Web of Science Citations: 17

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(T-K) similar to T-K(alpha-1), with a nonuniversal exponent alpha, in a remarkable similarity to the Kondo-disorder scenario found in disordered heavy-fermion metals. For alpha < 1, the resulting singular P(T-K) induces non-Fermi-liquid behavior with diverging thermodynamic responses as T -> 0. (AU)

FAPESP's process: 13/00681-8 - Disordered magnets: ground state, excitations, and thermodynamics
Grantee:Eric de Castro e Andrade
Support type: Research Grants - Young Investigators Grants