Pure and random-field quantum criticality in the dipolar Ising model: Theory of Mn12 acetates

被引：14

作者：

Millis, A. J. ^{[1
]}

Kent, A. D. ^{[2
]}

Sarachik, M. P. ^{[3
]}

Yeshurun, Y. ^{[4
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] NYU, Dept Phys, New York, NY 10003 USA

[3] CUNY City Coll, Dept Phys, New York, NY 10031 USA

[4] Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 02期

关键词：

MAGNETIZATION; MAGNET;

D O I：

10.1103/PhysRevB.81.024423

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A theoretical model for the Mn-12 acetates is derived including a "random-field" effect arising from isomer effects in some families of host acetate materials. Estimates for the important energy scales are given. Phase boundaries are determined using a mean-field approximation. Predictions for experiment are presented

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页数：11

相关论文

共 26 条

[1]

Aharoni A., 1996, Introduction to the Theory of Ferromagnetism

[2] Quantum and classical glass transitions in LiHoxY1-xF4 [J].

Ancona-Torres, C. ;

Silevitch, D. M. ;

Aeppli, G. ;

Rosenbaum, T. F. .

PHYSICAL REVIEW LETTERS, 2008, 101 (05)

[3] The ferromagnetic transition and domain structure in LiHoF4 [J].

Biltmo, A. ;

Henelius, P. .

EPL, 2009, 87 (02)

[4] Quantum critical behavior for a model magnet [J].

Bitko, D ;

Rosenbaum, TF ;

Aeppli, G .

PHYSICAL REVIEW LETTERS, 1996, 77 (05) :940-943

[5] Theory of the magnetic phase diagram of LiHoF4 -: art. no. 144411 [J].

Chakraborty, PB ;

Henelius, P ;

Kjonsberg, H ;

Sandvik, AW ;

Girvin, SM .

PHYSICAL REVIEW B, 2004, 70 (14) :144411-1

[6] Origin of second-order transverse magnetic anisotropy in Mn12-acetate -: art. no. 257201 [J].

Cornia, A ;

Sessoli, R ;

Sorace, L ;

Gatteschi, D ;

Barra, AL ;

Daiguebonne, C .

PHYSICAL REVIEW LETTERS, 2002, 89 (25)

[7] Magnetic quantum tunneling in the single-molecule magnet Mn12-acetate [J].

del Barco, E ;

Kent, AD ;

Hill, S ;

North, JM ;

Dalal, NS ;

Rumberger, EM ;

Hendrickson, DN ;

Chakov, N ;

Christou, G .

JOURNAL OF LOW TEMPERATURE PHYSICS, 2005, 140 (1-2) :119-174

[8] Symmetry of magnetic quantum tunneling in single molecule magnet Mn12-acetate -: art. no. 047203 [J].

del Barco, E ;

Kent, AD ;

Rumberger, EM ;

Hendrickson, DN ;

Christou, G .

PHYSICAL REVIEW LETTERS, 2003, 91 (04)

[9] RANDOM FIELD EFFECTS IN DISORDERED ANISOTROPIC ANTI-FERROMAGNETS [J].

FISHMAN, S ;

AHARONY, A .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1979, 12 (18) :L729-L733

[10] Macroscopic measurement of resonant magnetization tunneling in high-spin molecules [J].

Friedman, JR ;

Sarachik, MP ;

Tejada, J ;

Ziolo, R .

PHYSICAL REVIEW LETTERS, 1996, 76 (20) :3830-3833