Pairing by Kondo interaction and magnetic phases in the Anderson-Kondo lattice model: Statistically consistent renormalized mean-field theory

被引：26

作者：

Howczak, O. ^{[1
]}

Kaczmarczyk, J. ^{[1
]}

Spalek, J. ^{[1
]}

机构：

[1] Jagiellonian Univ, Marian Smoluchowski Inst Phys, PL-30059 Krakow, Poland

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2013年 / 250卷 / 03期

关键词：

heavy fermions; Kondo screening; unconventional superconductivity; SUPERCONDUCTIVITY;

D O I：

10.1002/pssb.201200774

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We start from the AndersonKondo lattice model derived by us earlier, in which both the Kondo interaction and the residual hybridization processes have been included in a systematic manner. In the present work we discuss a fairly complete phase diagram including magnetic, pure superconducting (SC), and coexistent antiferromagnetic (AF)SC phases. Both intra- and interatomic hybridization cases have been considered, separately. The Kondo insulating state with completely compensated magnetic moments has been obtained as a reference state, from which either AF or SC or mixed AF+SC phases evolve when the metallic state becomes stable. The SC pairing is induced mainly by the Kondo interaction. The method of approach we use is the so-called statistically consistent renormalized mean-field theory (SC-RMFT), encompassing essential corrections to the standard Gutzwiller-ansatz approach.

引用

页码：609 / 614

页数：6

共 20 条

[1] Landau-Gutzwiller quasiparticles -: art. no. 075103 [J].

Bünemann, J ;

Gebhard, F ;

Thul, R .

PHYSICAL REVIEW B, 2003, 67 (07)

[2] SPECIFIC-HEAT OF UPT3 - EVIDENCE FOR UNCONVENTIONAL SUPERCONDUCTIVITY [J].

FISHER, RA ;

KIM, S ;

WOODFIELD, BF ;

PHILLIPS, NE ;

TAILLEFER, L ;

HASSELBACH, K ;

FLOUQUET, J ;

GIORGI, AL ;

SMITH, JL .

PHYSICAL REVIEW LETTERS, 1989, 62 (12) :1411-1414

[3] Composite pairing in a mixed-valent two-channel Anderson model [J].

Flint, Rebecca ;

Nevidomskyy, Andriy H. ;

Coleman, Piers .

PHYSICAL REVIEW B, 2011, 84 (06)

[4] EQUIVALENCE OF VARIATIONAL AND SLAVE-BOSON MEAN-FIELD TREATMENTS OF THE PERIODIC ANDERSON MODEL [J].

GEBHARD, F .

PHYSICAL REVIEW B, 1991, 44 (03) :992-1003

[5]

Howczak O., ARXIV12090621

[6] Anderson lattice with explicit Kondo coupling revisited: metamagnetism and the field-induced suppression of the heavy fermion state [J].

Howczak, Olga ;

Spalek, Jozef .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2012, 24 (20)

[7]

JEDRAK J, ARXIV10080021

[8] Renormalized mean-field t-J model of high-Tc superconductivity: Comparison to experiment [J].

Jedrak, Jakub ;

Spalek, Jozef .

PHYSICAL REVIEW B, 2011, 83 (10)

[9] Consistent statistical treatment of the renormalized mean-field t-J model [J].

Jedrak, Jakub ;

Spalek, Jozef .

PHYSICAL REVIEW B, 2010, 81 (07)

[10] Coexistence of antiferromagnetism and superconductivity within t-J model with strong correlations and nonzero spin polarization [J].

Kaczmarczyk, Jan ;

Spalek, Jozef .

PHYSICAL REVIEW B, 2011, 84 (12)

← 1 2 →