Magnetic properties of a molecular-based spin-ladder system:: (5IAP)2CuBr4•2H2O -: art. no. 100402

被引：80

作者：

Landee, CP ^{[1
]}

Turnbull, MM

Galeriu, C

Giantsidis, J

Woodward, FM

机构：

[1] Clark Univ, Dept Phys, Worcester, MA 01610 USA

[2] Clark Univ, Carlson Sch Chem & Biochem, Worcester, MA 01610 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.63.100402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have synthesized and characterized a spin-1/2 Heisenberg antiferromagnetic ladder: his 5-iodo-2-aminopyridinium tetrabromocuprate (II) dihydrate. X-ray diffraction studies show the structure of the compound to consist of well isolated stacked ladders and the interaction between the Cu2+ atoms to be due to direct Br . . . Br contacts. Magnetic susceptibility and magnetization studies show the compound to be in the strong-coupling limit, with the interaction along the rungs (J'approximate to 13 K) much greater than the interaction along the rails (J approximate to1 K). Magnetic critical fields are observed near 8.3 and 10.4 T, respectively, establishing the existence of the energy gap.

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页数：4

相关论文

共 28 条

[1]

[Anonymous], CONDMAT0001147

[2] Magnetic behavior of a two-leg organic spin-ladder compound [J].

Arcon, D ;

Lappas, A ;

Margadonna, S ;

Prassides, K ;

Ribera, E ;

Veciana, J ;

Rovira, C ;

Henriques, RT ;

Almeida, M .

PHYSICAL REVIEW B, 1999, 60 (06) :4191-4194

[3] OBSERVATION OF A SPIN GAP IN SRCU2O3 COMPRISING SPIN-1/2 QUASI-1D 2-LEG LADDERS [J].

AZUMA, M ;

HIROI, Z ;

TAKANO, M ;

ISHIDA, K ;

KITAOKA, Y .

PHYSICAL REVIEW LETTERS, 1994, 73 (25) :3463-3466

[4] PREPARATION AND MAGNETIC AND STRUCTURAL EXAMINATION OF MONOMERIC, DIMERIC, AND POLYMERIC ADENINE COMPLEXES OF COPPER(II) [J].

BROWN, DB ;

HALL, JW ;

HELIS, HM ;

WALTON, EG ;

HODGSON, DJ ;

HATFIELD, WE .

INORGANIC CHEMISTRY, 1977, 16 (11) :2675-2680

[5] Magnetization curves of antiferromagnetic Heisenberg spin-1/2 ladders [J].

Cabra, DC ;

Honecker, A ;

Pujol, P .

PHYSICAL REVIEW LETTERS, 1997, 79 (25) :5126-5129

[6]

Calemczuk R, 1999, EUR PHYS J B, V7, P171, DOI 10.1007/s100510050600

[7] Phase separation and charge density waves: Possible sources of non-Fermi liquid behavior and pairing in high-temperature superconductors [J].

Castellani, C ;

DiCastro, C ;

Grilli, M .

JOURNAL OF SUPERCONDUCTIVITY, 1996, 9 (04) :413-424

[8] Zero temperature phase transitions in spin-ladders:: Phase diagram and dynamical studies of Cu2(C5H12N2)2Cl4 [J].

Chaboussant, G ;

Julien, MH ;

Fagot-Revurat, Y ;

Hanson, M ;

Lévy, LP ;

Berthier, C ;

Horvatic, M ;

Piovesana, O .

EUROPEAN PHYSICAL JOURNAL B, 1998, 6 (02) :167-181

[9] Identification of nuclear relaxation processes in a gapped quantum magnet: H-1 NMR in the S=1/2 Heisenberg ladder Cu-2(C5H12N2)(2)Cl-4 [J].

Chaboussant, G ;

Julien, MH ;

FagotRevurat, Y ;

Levy, LP ;

Berthier, C ;

Horvatic, M ;

Piovesana, O .

PHYSICAL REVIEW LETTERS, 1997, 79 (05) :925-928

[10] Experimental phase diagram of Cu-2(C5H12N2)(2)Cl-4: A quasi-one-dimensional antiferromagnetic spin-1/2 Heisenberg ladder [J].

Chaboussant, G ;

Crowell, PA ;

Levy, LP ;

Piovesana, O ;

Madouri, A ;

Mailly, D .

PHYSICAL REVIEW B, 1997, 55 (05) :3046-3049