Mott Transition between a Spin-Liquid Insulator and a Metal in Three Dimensions

被引：81

作者：

Podolsky, Daniel ^{[1
]}

Paramekanti, Arun ^{[1
]}

Kim, Yong Baek ^{[1
]}

Senthil, T. ^{[2
]}

机构：

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

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 18期

基金：

加拿大自然科学与工程研究理事会;

关键词：

FERMIONS;

D O I：

10.1103/PhysRevLett.102.186401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study a bandwidth controlled Mott metal-insulator transition (MIT) from a Fermi-liquid metal to a quantum spin-liquid insulator in three dimensions. Using a slave rotor approach including gauge fluctuations, we obtain a continuous MIT and discuss finite temperature crossovers in its vicinity. We show that the specific heat C similar to Tlnln(1/T) at the MIT and that the metallic state near the MIT should exhibit a "conductivity minimum" as a function of temperature. We suggest Na4Ir3O8 as a candidate to test our predictions and compute its electron spectral function at the MIT.

引用

收藏

页数：4

相关论文

共 16 条

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

ALTSHULER, BL ;

IOFFE, LB ;

MILLIS, AJ .

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

[2] Spin-orbit effects in Na4Ir3O8:: A hyper-kagome lattice antiferromagnet [J].

Chen, Gang ;

Balents, Leon .

PHYSICAL REVIEW B, 2008, 78 (09)

[3] Slave-rotor mean-field theories of strongly correlated systems and the Mott transition in finite dimensions [J].

Florens, S ;

Georges, A .

PHYSICAL REVIEW B, 2004, 70 (03) :035114-1

[4] Classical antiferromagnet on a hyperkagome lattice [J].

Hopkinson, John M. ;

Isakov, Sergei V. ;

Kee, Hae-Young ;

Kim, Yong Baek .

PHYSICAL REVIEW LETTERS, 2007, 99 (03)

[5] GAUGE-INVARIANT RESPONSE FUNCTIONS OF FERMIONS COUPLED TO A GAUGE FIELD [J].

KIM, YB ;

FURUSAKI, A ;

WEN, XG ;

LEE, PA .

PHYSICAL REVIEW B, 1994, 50 (24) :17917-17932

[6] Topological spin liquid on the hyperkagome lattice of Na4Ir3O8 [J].

Lawler, Michael J. ;

Kee, Hae-Young ;

Kim, Yong Baek ;

Vishwanath, Ashvin .

PHYSICAL REVIEW LETTERS, 2008, 100 (22)

[7] Gapless Spin Liquids on the Three-Dimensional Hyperkagome Lattice of Na4Ir3O8 [J].

Lawler, Michael J. ;

Paramekanti, Arun ;

Kim, Yong Baek ;

Balents, Leon .

PHYSICAL REVIEW LETTERS, 2008, 101 (19)

[8] U(1) gauge theory of the Hubbard model:: Spin liquid states and possible application to κ-(BEDT-TTF)2Cu2(CN)3 -: art. no. 036403 [J].

Lee, SS ;

Lee, PA .

PHYSICAL REVIEW LETTERS, 2005, 95 (03)

[9] Variational study of triangular lattice spin-1/2 model with ring exchanges and spin liquid state in κ-(ET)2Cu2(CN)3 -: art. no. 045105 [J].

Motrunich, OI .

PHYSICAL REVIEW B, 2005, 72 (04)

[10] Spin-liquid state in the S=1/2 hyperkagome antiferromagnet Na4Ir3O8 [J].

Okamoto, Yoshihiko ;

Nohara, Minoru ;

Aruga-Katori, Hiroko ;

Takagi, Hidenori .

PHYSICAL REVIEW LETTERS, 2007, 99 (13)