Non-equilibrium magnetization dynamics in the Fe8 single-molecule magnet induced by high-intensity microwave radiation

被引：20

作者：

Bal, M ^{[1
]}

Friedman, JR

Suzuki, Y

Rumberger, EM

Hendrickson, DN

Avraham, N

Myasoedov, Y

Shtrikman, H

Zeldov, E

机构：

[1] Amherst Coll, Dept Phys, Amherst, MA 01002 USA

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

[3] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA

[4] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel

来源：

EUROPHYSICS LETTERS | 2005年 / 71卷 / 01期

关键词：

D O I：

10.1209/epl/i2005-10069-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Resonant microwave radiation applied to a single crystal of the molecular magnet Fe-8 induces dramatic changes in the sample's magnetization. Transitions between excited states are found even though at the nominal system temperature these levels have negligible population. We find evidence that the sample heats significantly when the resonance condition is met. In addition, heating is observed after a short pulse of intense radiation has been turned off, indicating that the spin system is out of equilibrium with the lattice.

引用

页码：110 / 116

页数：7

共 20 条

[1] Microwave absorption and magnetization tunneling in Mn12-acetate molecular clusters -: art. no. 220402 [J].