Artículos de revistas
Non-fermi-liquid Behavior In Metallic Quasicrystals With Local Magnetic Moments
Registro en:
Non-fermi-liquid Behavior In Metallic Quasicrystals With Local Magnetic Moments. Amer Physical Soc, v. 115, p. Jul-2015.
0031-9007
WOS:000357864800017
10.1103/PhysRevLett.115.036403
Autor
Andrade
Eric C.; Jagannathan
Anuradha; Miranda
Eduardo; Vojta
Matthias; Dobrosavljevic
Vladimir
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 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. 115 3
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Helmholtz association [VI-521] DFG [GRK 1621, SFB 1143] NSF [DMR-1005751, DMR-1410132] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) FAPESP [2013/00681-8]