Random Kondo alloys investigated with the coherent potential approximation

被引：26

作者：

Burdin, S. ^{[1
]}

Fulde, P. ^{[1
]}

机构：

[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.76.104425

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interplay between the Kondo effect and disorder is studied. This is done by applying a matrix coherent potential approximation and treating the Kondo interaction on a mean-field level. The resulting equations are shown to agree with those derived by the dynamical mean-field theory. By applying the formalism to a Bethe tree structure with infinite coordination, the effects of diagonal and off-diagonal disorder are studied. Special attention is paid to the behavior of the Kondo and the Fermi-liquid temperature as function of disorder and concentration of the Kondo ions. The nonmonotonous dependence of these quantities is discussed.

引用

页数：16

共 43 条

[1] DIAGONALIZATION OF THE KONDO-HAMILTONIAN [J].

ANDREI, N .

PHYSICAL REVIEW LETTERS, 1980, 45 (05) :379-382

[2] Anderson lattice behavior in Yb1-xLuxAl3 -: art. no. 125102 [J].

Bauer, ED ;

Booth, CH ;

Lawrence, JM ;

Hundley, MF ;

Sarrao, JL ;

Thompson, JD ;

Riseborough, PS ;

Ebihara, T .

PHYSICAL REVIEW B, 2004, 69 (12)

[3] Coherence scale of the Kondo lattice [J].

Burdin, S ;

Georges, A ;

Grempel, DR .

PHYSICAL REVIEW LETTERS, 2000, 85 (05) :1048-1051

[4] Heavy-fermion and spin-liquid behavior in a Kondo lattice with magnetic frustration [J].

Burdin, S ;

Grempel, DR ;

Georges, A .

PHYSICAL REVIEW B, 2002, 66 (04) :451111-451116

[5]

BURDIN S, UNPUB ARXIVCONDMAT02

[6] Mott-Hubbard transition versus anderson localization in correlated electron systems with disorder [J].

Byczuk, K ;

Hofstetter, W ;

Vollhardt, D .

PHYSICAL REVIEW LETTERS, 2005, 94 (05)

[7] Non-fermi liquid behavior and Griffiths phase in f-electron compounds [J].

Castro Neto, AH ;

Castilla, G ;

Jones, BA .

PHYSICAL REVIEW LETTERS, 1998, 81 (16) :3531-3534

[8] Transition temperature of ferromagnetic semiconductors: A dynamical mean field study [J].

Chattopadhyay, A ;

Das Sarma, S ;

Millis, AJ .

PHYSICAL REVIEW LETTERS, 2001, 87 (22) :227202-227202

[9] MIXED-VALENCE AS AN ALMOST BROKEN SYMMETRY [J].

COLEMAN, P .

PHYSICAL REVIEW B, 1987, 35 (10) :5072-5116

[10] Effect of conduction band filling on the competition Kondo-magnetism in the Kondo lattice [J].

Coqblin, B ;

Gusmao, MA ;

Iglesias, JR ;

Lacroix, C ;

Ruppenthal, A ;

Simoes, ASD .

PHYSICA B, 2000, 281 :50-52

← 1 2 3 4 5 →