Resonant magnetization tunneling in Mn12 acetate:: The absence of inhomogeneous hyperfine broadening

被引：28

作者：

Friedman, JR ^{[1
]}

Sarachik, MP

Ziolo, R

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

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

[3] Xerox Corp, Wilson Ctr Res & Technol, Webster, NY 14580 USA

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.58.R14729

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the results of a detailed study of the thermally assisted-resonant-tunneling relaxation rate of Mn-12 acetate as a function of an external, longitudinal magnetic field and find that the data can be fit extremely well to a Lorentzian function. No hint of inhomogeneous broadening is found, even though some is expected from the Mn nuclear hyperfine interaction. This inconsistency implies that the tunneling mechanism cannot be described simply in terms of a random hyperfine field.

引用

页码：14729 / 14732

页数：4