Modified kagome physics in the natural spin-1/2 kagome lattice systems:: Kapellasite Cu3Zn(OH)6Cl2 and haydeeite Cu3Mg(OH)6Cl2

被引：76

作者：

Janson, O. ^{[1
]}

Richter, J. ^{[2
]}

Rosner, H. ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

[2] Univ Magdeburg, Inst Theoret Phys, D-39016 Magdeburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.101.106403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The recently discovered natural minerals Cu3Zn(OH)(6)Cl-2 and Cu3Mg(OH)(6)Cl-2 are spin 1/2 systems with an ideal kagome geometry. Based on electronic structure calculations, we develop a realistic model which includes couplings across the kagome hexagons beyond the original kagome model that are intrinsic in real kagome materials. Exact diagonalization studies for the derived model reveal a strong impact of these couplings on the magnetic ground state. Our predictions could be compared to and supplied with neutron scattering, thermodynamic data, and NMR data.

引用

页数：4

共 31 条

[1] Herbertsmithite, Cu3Zn(OH)6Cl2, a new species, and the definition of paratacamite [J].

Braithwaite, RSW ;

Mereiter, K ;

Paar, WH ;

Clark, AM .

MINERALOGICAL MAGAZINE, 2004, 68 (03) :527-539

[2] HIDDEN ORDER IN A FRUSTRATED SYSTEM - PROPERTIES OF THE HEISENBERG KAGOME ANTIFERROMAGNET [J].

CHALKER, JT ;

HOLDSWORTH, PCW ;

SHENDER, EF .

PHYSICAL REVIEW LETTERS, 1992, 68 (06) :855-858

[3] Experimental realization of a 2D fractional quantum spin liquid [J].

Coldea, R ;

Tennant, DA ;

Tsvelik, AM ;

Tylczynski, Z .

PHYSICAL REVIEW LETTERS, 2001, 86 (07) :1335-1338

[4] Magnetic ground state of an experimental S=1/2 kagome antiferromagnet [J].

de Vries, M. A. ;

Kamenev, K. V. ;

Kockelmann, W. A. ;

Sanchez-Benitez, J. ;

Harrison, A. .

PHYSICAL REVIEW LETTERS, 2008, 100 (15)

[5]

Diep HT, 2005, FRUSTRATED SPIN SYSTEMS, P1, DOI 10.1142/9789812567819

[6] Twelve sublattice ordered phase in the J1-J2 model on the kagome lattice -: art. no. 024433 [J].

Domenge, JC ;

Sindzingre, P ;

Lhuillier, C ;

Pierre, L .

PHYSICAL REVIEW B, 2005, 72 (02)

[7] Density functional application to strongly correlated electron systems [J].

Eschrig, H ;

Koepernik, K ;

Chaplygin, I .

JOURNAL OF SOLID STATE CHEMISTRY, 2003, 176 (02) :482-495

[8] Spin dynamics of the spin-1/2 Kagome lattice antiferromagnet ZnCu3(OH)6Cl2 [J].

Helton, J. S. ;

Matan, K. ;

Shores, M. P. ;

Nytko, E. A. ;

Bartlett, B. M. ;

Yoshida, Y. ;

Takano, Y. ;

Suslov, A. ;

Qiu, Y. ;

Chung, J. -H. ;

Nocera, D. G. ;

Lee, Y. S. .

PHYSICAL REVIEW LETTERS, 2007, 98 (10)

[9] CLASSICAL ANTIFERROMAGNETS ON THE KAGOME LATTICE [J].

HUSE, DA ;

RUTENBERG, AD .

PHYSICAL REVIEW B, 1992, 45 (13) :7536-7539

[10] Electronic structure and magnetic properties of the spin-1/2 Heisenberg magnet Bi2CuO4 [J].

Janson, O. ;

Kuzian, R. O. ;

Drechsler, S.-L. ;

Rosner, H. .

PHYSICAL REVIEW B, 2007, 76 (11)

← 1 2 3 4 →