Magnetic-field induced quantum phase transition and critical behavior in a gapped spin system TlCuCl3

被引：4
|
作者：
Yamada, F. [1 ]
Ono, T.
Fujisawa, M.
Tanaka, H.
Sakakibara, T.
机构：
[1] Tokyo Inst Technol, Dept Phys, Kashiwa, Chiba 1528551, Japan
[2] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期
关键词：
TlCuCl3; spin gap; field-induced magnetic ordering; magnon; Bose-Einstein condensation;
D O I：
10.1016/j.jmmm.2006.10.372
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetization measurements were performed on TlCuCl3 with gapped ground state. The critical density and the magnetic phase diagram were obtained. The interacting constant was obtained as U/k(B) = 313 K. The experimental phase boundary for T < 5 K agrees perfectly with the magnon BEC theory based on the Hartree-Fock approximation with realistic dispersion relations and U/k(B) 320 K. 3 The exponent phi obtained with all the data points for T < 5 K is phi = 1.99, which is somewhat larger than theoretical exponent phi(BEC) = 3/2. However, it was found that the exponent converges at phi(BEC) =3/2 with decreasing fitting window. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1352 / 1354
页数：3
相关论文
共 50 条
  • [11] Magnetic excitations in the quantum spin system TlCuCl3 -: art. no. 172414
    Cavadini, N
    Heigold, G
    Henggeler, W
    Furrer, A
    Güdel, HU
    Krämer, K
    Mutka, H
    [J]. PHYSICAL REVIEW B, 2001, 63 (17):
  • [12] Spin dynamics in the high-field phase of quantum-critical S =1/2 TlCuCl3
    Ch. Rüegg
    N. Cavadini
    A. Furrer
    K. Krämer
    H.U. Güdel
    P. Vorderwisch
    H. Mutka
    [J]. Applied Physics A, 2002, 74 : s840 - s842
  • [13] Spin dynamics in the BEC phase of the S=1/2 quantum spin system TlCuCl3
    Rüegg, C
    Cavadini, N
    Furrer, A
    Krämer, K
    Güdel, HU
    Vorderwisch, P
    Habicht, K
    Mutka, H
    Wildes, A
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 : 195 - 196
  • [14] Magnetoelectric effect in the quantum spin gap system TlCuCl3
    Kimura, Shojiro
    Kakihata, Kento
    Sawada, Yuya
    Watanabe, Kazuo
    Matsumoto, Masashige
    Hagiwara, Masayuki
    Tanaka, Hidekazu
    [J]. PHYSICAL REVIEW B, 2017, 95 (18)
  • [15] Field-induced three-dimensional magnetic ordering in the spin-gap system TlCuCl3
    Oosawa, A
    Ishii, M
    Tanaka, H
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (01) : 265 - 271
  • [16] Magnetic excitations in the spin gap system KCuCl3 and TlCuCl3
    Kato, T
    Oosawa, A
    Takatsu, K
    Tanaka, H
    Shiramura, W
    Nakajima, K
    Kakurai, K
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1999, 60 (8-9) : 1125 - 1128
  • [17] Pressure-induced quantum phase transition in the spin-liquid TlCuCl3 -: art. no. 257201
    Rüegg, C
    Furrer, A
    Sheptyakov, D
    Strässle, T
    Krämer, KW
    Güdel, HU
    Mélési, L
    [J]. PHYSICAL REVIEW LETTERS, 2004, 93 (25)
  • [18] The soft mode transition induced by magnetic field and pressure in TlCuCl3 and related dimer compounds
    Matsumoto, M
    Normand, B
    Rice, TM
    Sigrist, M
    [J]. PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 2005, (159): : 200 - 207
  • [19] Magnetic excitations and exchange interactions in the spin-gap system TlCuCl3
    Oosawa, A
    Kato, T
    Tanaka, H
    Kakurai, K
    Müller, M
    Mikeska, HJ
    [J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1): : S846 - S849
  • [20] Observation of field-induced transverse Neel ordering in the spin gap system TlCuCl3
    Tanaka, H
    Oosawa, A
    Kato, T
    Uekusa, H
    Ohashi, Y
    Kakurai, K
    Hoser, A
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2001, 70 (04) : 939 - 942
12345