Quantum dynamics of molecular magnets in ultra-fast sweeping magnetic fields

被引：30

作者：

Nojiri, H ^{[1
]}

Taniguchi, T

Yoshitami, A

Müller, A

Barbara, B

机构：

[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[2] Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan

[3] Univ Bielefeld, Fak Chem, D-33501 Bielefeld, Germany

[4] CNRS, Lab Magnetisme Louis Neel, F-38042 Grenoble, France

来源：

PHYSICA B-CONDENSED MATTER | 2004年 / 346卷

关键词：

molecular magnet; quantum dynamics; quantum tunneling; frustration; complex pulsed field;

D O I：

10.1016/j.physb.2004.01.053

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Non-equilibrium magnetization process of a S = 1/2 spin triangle in molecular magnet V-15 has been studied by using fast sweeping pulsed magnetic fields. In the up sweep, the magnetization jump of about 1mu(B) is found at the level crossing between the ground S = 1 and the excited S = 3/2 states, while it is about 2mu(B) in the down sweep. The jump in the up sweep is half of that expected in the equilibrium magnetization process. This phenomenon is interpreted by considering the difference of mixing in two degenerated S = 1/2 states with the S = 3/2 state. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：216 / 220

页数：5

共 8 条

[1] Butterfly hysteresis loop and dissipative spilt reversal in the S = 1/2, V15 molecular complex [J].