Coupled frustrated quantum spin-1/2 chains with orbital order in volborthite Cu3V2O7(OH)2•2H2O

被引：39

作者：

Janson, O. ^{[1
]}

Richter, J. ^{[2
]}

Sindzingre, P. ^{[3
]}

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

[3] Univ Paris 06, Lab Phys Theor Mat Condensee, Paris, France

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 10期

关键词：

MAGNETIC MONOPOLES; LATTICE;

D O I：

10.1103/PhysRevB.82.104434

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a microscopic magnetic model for the spin-liquid candidate volborthite Cu3V2O7 (OH)(2)center dot 2H(2)O. The essentials of this density-functional-theory-based model are (i) the orbital ordering of Cu(1) 3d(3z2-r2) and Cu (2) 3d(x2-y2), (ii) three relevant couplings J(ic), J(1), and J(2), (iii) the ferromagnetic nature of J(1), and (iv) frustration governed by the next-nearest-neighbor exchange interaction J(2). Our model implies magnetism of frustrated coupled chains in contrast to the previously proposed anisotropic kagome model. Exact diagonalization studies reveal agreement with experiments.

引用

页数：5

共 38 条

[1] RESONATING VALENCE BONDS - NEW KIND OF INSULATOR [J].

ANDERSON, PW .

MATERIALS RESEARCH BULLETIN, 1973, 8 (02) :153-160

[2] Ground state of the kagome-like S=1/2 antiferromagnet volborthite Cu3V2O7(OH)2•2H2O -: art. no. 087203 [J].

Bert, F ;

Bono, D ;

Mendels, P ;

Ladieu, F ;

Duc, F ;

Trombe, JC ;

Millet, P .

PHYSICAL REVIEW LETTERS, 2005, 95 (08)

[3] Dilution in volborthite S=1/2 frustrated magnet:: a μSR and NMR study [J].

Bert, F ;

Bono, D ;

Mendels, P ;

Trombe, JC ;

Millet, P ;

Amato, A ;

Baines, C ;

Hillier, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (11) :S829-S834

[4] Quantum kagome antiferromagnet in a magnetic field: Low-lying nonmagnetic excitations versus valence-bond crystal order [J].

Cabra, DC ;

Grynberg, MD ;

Holdsworth, PCW ;

Honecker, A ;

Pujol, P ;

Richter, J ;

Schmalfuss, D ;

Schulenburg, J .

PHYSICAL REVIEW B, 2005, 71 (14)

[5] Magnetic monopoles in spin ice [J].

Castelnovo, C. ;

Moessner, R. ;

Sondhi, S. L. .

NATURE, 2008, 451 (7174) :42-45

[6] 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

[7] Toward Perfection: Kapellasite, Cu3Zn(OH)6Cl2, a New Model S=1/2 Kagome Antiferromagnet [J].

Colman, R. H. ;

Ritter, C. ;

Wills, A. S. .

CHEMISTRY OF MATERIALS, 2008, 20 (22) :6897-6899

[8] LOCAL-DENSITY FUNCTIONAL AND ON-SITE CORRELATIONS - THE ELECTRONIC-STRUCTURE OF LA2CUO4 AND LACUO3 [J].

CZYZYK, MT ;

SAWATZKY, GA .

PHYSICAL REVIEW B, 1994, 49 (20) :14211-14228

[9] Frustrated cuprate route from antiferromagnetic to ferromagnetic spin-1/2 Heisenberg chains:: Li2ZrCuO4 as a missing link near the quantum critical point [J].

Drechsler, S. -L. ;

Volkova, O. ;

Vasiliev, A. N. ;

Tristan, N. ;

Richter, J. ;

Schmitt, M. ;

Rosner, H. ;

Malek, J. ;

Klingeler, R. ;

Zvyagin, A. A. ;

Buechner, B. .

PHYSICAL REVIEW LETTERS, 2007, 98 (07)

[10] Tight-binding models for the iron-based superconductors [J].

Eschrig, Helmut ;

Koepernik, Klaus .

PHYSICAL REVIEW B, 2009, 80 (10)

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