Doped t-J model on a triangular lattice:: Possible application to NaxCoO2•yH2O and Na1-xTiO2 -: art. no. 092504

被引：148

作者：

Wang, QH ^{[1
]}

Lee, DH

Lee, PA

机构：

[1] Nanjing Univ, Inst Solid State Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

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

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.69.092504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the finding of time-reversal-symmetry-breaking d(x)(2)-y(2)+id(xy) superconducting ground state in the slave-boson mean-field theory for the t-J model on triangular lattice. For t/J=-5(t/J=-9) pairing exists for x<13% (x<8%) upon electron doping, and x<56% (x<13%) upon hole doping. These results are potentially relevant to doped Mott insulators NaxCoO2.yH(2)O and Na1-xTiO2.

引用

页数：4

共 23 条

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