Spin-triplet pairing instability of the spinon fermi surface in a U(1) spin liquid

被引：47

作者：

Galitski, Victor ^{[1
,2
]}

Kim, Yong Baek ^{[3
]}

机构：

[1] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[2] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA

[3] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 26期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.99.266403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent experiments on the organic compound kappa-(ET)(2)Cu(2)(CN)(3) have provided a promising example of a two-dimensional spin liquid state. This phase is described by a two-dimensional spinon Fermi sea coupled to a U(1) gauge field. We study Kohn-Luttinger-like pairing instabilities of the spinon Fermi surface due to singular interaction processes with twice-the-Fermi-momentum transfer. We find that under certain circumstances the pairing instability occurs in odd-orbital-angular momentum or spin-triplet channels. Implications to experiments are discussed.

引用

页数：4

共 31 条

[1] Criticality in quantum triangular antiferromagnets via fermionized vortices [J].

Alicea, J ;

Motrunich, OI ;

Hermele, M ;

Fisher, MPA .

PHYSICAL REVIEW B, 2005, 72 (06)

[2] LOW-ENERGY PROPERTIES OF FERMIONS WITH SINGULAR INTERACTIONS [J].

ALTSHULER, BL ;

IOFFE, LB ;

MILLIS, AJ .

PHYSICAL REVIEW B, 1994, 50 (19) :14048-14064

[3] SPIN-DENSITY-WAVE TRANSITION IN A 2-DIMENSIONAL SPIN LIQUID [J].

ALTSHULER, BL ;

IOFFE, LB ;

LARKIN, AI ;

MILLIS, AJ .

PHYSICAL REVIEW B, 1995, 52 (06) :4607-4616

[4] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[5] Singular perturbation theory for interacting fermions in two dimensions [J].

Chubukov, AV ;

Maslov, DL ;

Gangadharaiah, S ;

Glazman, LI .

PHYSICAL REVIEW B, 2005, 71 (20)

[6] KOHN-LUTTINGER EFFECT AND THE INSTABILITY OF A 2-DIMENSIONAL REPULSIVE FERMI-LIQUID AT T = 0 [J].

CHUBUKOV, AV .

PHYSICAL REVIEW B, 1993, 48 (02) :1097-1104

[7]

ELIASHBERG GM, 1960, SOV PHYS JETP-USSR, V11, P696

[8] Vortices and quasiparticles near the superconductor-insulator transition in thin films [J].

Galitski, VM ;

Refael, G ;

Fisher, MPA ;

Senthil, T .

PHYSICAL REVIEW LETTERS, 2005, 95 (07)

[9] Kohn-Luttinger pseudopairing in a two-dimensional Fermi liquid [J].

Galitski, VM ;

Das Sarma, S .

PHYSICAL REVIEW B, 2003, 67 (14)

[10] Temperature-dependent spin susceptibility in a two-dimensional metal [J].

Galitski, VM ;

Chubukov, AV ;

Das Sarma, S .

PHYSICAL REVIEW B, 2005, 71 (20)

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