Magnetic Dipolar Ordering and Quantum Phase Transition in an Fe8 Molecular Magnet

被引：32

作者：

Burzuri, E. ^{[1
,2
]}

Luis, F. ^{[1
,2
]}

Barbara, B. ^{[3
,4
]}

Ballou, R. ^{[3
,4
]}

Ressouche, E. ^{[5
]}

Montero, O. ^{[1
,2
]}

Campo, J. ^{[1
,2
]}

Maegawa, S. ^{[6
]}

机构：

[1] Univ Zaragoza, Inst Ciencia Mat Aragon, CSIC, E-50009 Zaragoza, Spain

[2] Univ Zaragoza, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain

[3] CNRS, Inst Neel, F-38042 Grenoble 9, France

[4] Univ Grenoble 1, F-38042 Grenoble 9, France

[5] INAC SPSMS MDN, CEA Grenoble, Grenoble 9, France

[6] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 09期

关键词：

ISING-MODEL; CRITICAL-BEHAVIOR; TRANSVERSE FIELD; IRON CLUSTER;

D O I：

10.1103/PhysRevLett.107.097203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that a crystal of mesoscopic Fe-8 single-molecule magnets is an experimental realization of the quantum Ising model in a transverse field, with dipolar interactions. Quantum annealing has enabled us to explore the quantum and classical phase transitions between the paramagnetic and ferromagnetic phases, at thermodynamical equilibrium. The phase diagram and critical exponents that we obtain agree with expectations for the mean-field universality class.

引用

页数：4

共 36 条

[1] CRITICAL BEHAVIOR OF MAGNETS WITH DIPOLAR INTERACTIONS .5. UNIAXIAL MAGNETS IN D-DIMENSIONS [J].