Ordering and excitations in the field-induced magnetic phase of Cs3Cr2Br9 -: art. no. 177202

被引：27

作者：

Grenier, B ^{[1
]}

Inagaki, Y

Regnault, LP

Wildes, A

Asano, T

Ajiro, Y

Lhotel, E

Paulsen, C

Ziman, T

Boucher, JP

机构：

[1] CEA GRenoble, Lab Magnetisme & Diffract Neutron, Dept Rech Fondamentale Mat Condensee, SPSMS, F-38054 Grenoble 9, France

[2] Kyushu Univ, Dept Phys, Fukuoka 8508581, Japan

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[4] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble 9, France

[5] Univ Grenoble 1, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.92.177202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Field-induced magnetic order has been investigated in detail in the interacting spin 3/2 dimer system Cs3Cr2Br9. Elastic and inelastic neutron scattering measurements were performed up to H=6 T, well above the critical field H(c1)similar to1.5 T. The ordering displays incommensurabilities and a large hysteresis before a commensurate structure is reached. This structure is fully determined. Surprisingly, the lowest excitation branch never closes. Above H-c1, the gap increases slowly with the field. An analysis in terms of projected pseudospins is given.

引用

页码：177202 / 1

页数：4

共 13 条

[1] BOSE CONDENSATION IN QUASI-ONE-DIMENSIONAL ANTIFERROMAGNETS IN STRONG FIELDS [J].

AFFLECK, I .

PHYSICAL REVIEW B, 1991, 43 (04) :3215-3222

[2] THEORY OF MAGNETIC RESONANCE IN HEAVY RARE-EARTH METALS [J].

COOPER, BR ;

NETTEL, SJ ;

SUHL, H ;

ELLIOTT, RJ .

PHYSICAL REVIEW, 1962, 127 (01) :57-&

[3]

Inagaki Y., 2003, THESIS KYUSHU U FUKU

[4] Magnetic excitations in the spin gap system KCuCl3 [J].

Kato, T ;

Takatsu, K ;

Tanaka, H ;

Shiramura, W ;

Mori, M ;

Nakajima, K ;

Kakurai, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1998, 67 (03) :752-754

[5]

LEUENBERGER B, 1985, PHYS REV B, V31, P597, DOI 10.1103/PhysRevB.31.597

[6] SPIN DYNAMICS OF DIMERIZED SINGLET GROUND-STATE SYSTEMS WITH MAGNETIC-FIELD AND ANISOTROPY EFFECTS [J].

LEUENBERGER, B .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, 19 (21) :4083-4093

[7] SPIN DYNAMICS OF AN ISOTROPIC SINGLET-GROUND-STATE ANTIFERROMAGNET WITH ALTERNATING STRONG AND WEAK-INTERACTIONS - AN INELASTIC-NEUTRON-SCATTERING STUDY OF THE DIMER COMPOUND CS3CR2BR9 [J].

LEUENBERGER, B ;

STEBLER, A ;

GUDEL, HU ;

FURRER, A ;

FEILE, R ;

KJEMS, JK .

PHYSICAL REVIEW B, 1984, 30 (11) :6300-6307

[8] SYNTHESIS, STRUCTURAL CHARACTERIZATION, AND MAGNETIC-PROPERTIES OF THE DIMER COMPOUNDS CS3CR2CL9, CS3CR2BR9, CS3CR2I9 [J].

LEUENBERGER, B ;

GUDEL, HU ;

FISCHER, P .

JOURNAL OF SOLID STATE CHEMISTRY, 1986, 64 (01) :90-101

[9] THEORY OF DISCOMMENSURATIONS AND COMMENSURATE-INCOMMENSURATE CHARGE-DENSITY WAVE-PHASE TRANSITION [J].

MCMILLAN, WL .

PHYSICAL REVIEW B, 1976, 14 (04) :1496-1502

[10] Bose-Einstein condensation of dilute magnons in TlCuCl3 [J].

Nikuni, T ;

Oshikawa, M ;

Oosawa, A ;

Tanaka, H .

PHYSICAL REVIEW LETTERS, 2000, 84 (25) :5868-5871

← 1 2 →