Kondo necklace model in approximants of Fibonacci chains

被引：1

作者：

Reyes, Daniel ^{[1
]}

Tarazona, H. ^{[2
]}

Cuba-Supanta, G. ^{[2
]}

Landauro, C. V. ^{[2
]}

Espinoza, R. ^{[2
]}

Quispe-Marcatoma, J. ^{[2
]}

机构：

[1] Inst Militar Engn, Praca Gen Tiburcio 80, BR-22290270 Praia Vermelha, RJ, Brazil

[2] Natl Univ San Marcos, Fac Phys Sci, POB 14-0149, Lima 14, Peru

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 441卷

关键词：

SPACE RENORMALIZATION-GROUP; QUANTUM CRITICAL-BEHAVIOR; QUASI-CRYSTAL; EXCHANGE MODULATION; LATTICE; STATES; AU; AL;

D O I：

10.1016/j.jmmm.2017.05.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The low energy behavior of the one dimensional Kondo necklace model with structural aperiodicity is studied using a representation for the localized and conduction electron spins, in terms of local Kondo singlet and triplet operators at zero temperature. A decoupling scheme on the double time Green's functions is used to find the dispersion relation for the excitations of the system. We determine the dependence between the structural aperiodicity modulation and the spin gap in a Fibonacci approximant chain at zero temperature and in the paramagnetic side of the phase diagram. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：85 / 87

页数：3

共 36 条

[1] Finite-temperature properties of the two-dimensional SU(2) Kondo necklace [J].

Brenig, W .

PHYSICAL REVIEW B, 2006, 73 (10)

[2]

Deguchi K, 2012, NAT MATER, V11, P1013, DOI [10.1038/NMAT3432, 10.1038/nmat3432]

[3] KONDO LATTICE AND WEAK ANTIFERROMAGNETISM [J].

DONIACH, S .

PHYSICA B & C, 1977, 91 (JUL) :231-234

[4] New universality class in spin-one-half Fibonacci Heisenberg chains [J].

Hida, K .

PHYSICAL REVIEW LETTERS, 2004, 93 (03) :037205-1

[5] Real space renormalization group study of the S=1/2 XXZ chains with fibonacci exchange modulation [J].

Hida, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2004, 73 (08) :2296-2304

[6]

Hida K, 2005, J PHYS SOC JPN, V74

[7] Penrose quantum antiferromagnet [J].

Jagannathan, A. ;

Szallas, A. ;

Wessel, Stefan ;

Duneau, Michel .

PHYSICAL REVIEW B, 2007, 75 (21)

[8] Ground state of a two-dimensional quasiperiodic quantum antiferromagnet [J].

Jagannathan, A .

PHYSICAL REVIEW B, 2005, 71 (11)

[9] Magnetic states induced by electron-electron interactions in a plane quasiperiodic tiling [J].

Jagannathan, A ;

Schulz, HJ .

PHYSICAL REVIEW B, 1997, 55 (13) :8045-8048

[10]

Janot C., 1994, Quasicrystals: A Primer

← 1 2 3 4 →