Macroscopic quantum coherence in a magnetic nanoparticle above the surface of a superconductor

被引：13

作者：

Chudnovsky, EM

Friedman, JR

机构：

[1] CUNY Herbert H Lehman Coll, Dept Phys & Astron, Bronx, NY 10468 USA

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

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.85.5206

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study macroscopic quantum tunneling of the magnetic moment in a single-domain particle placed above the surface of a superconductor. Such a setup allows one to manipulate the height of the energy barrier, preserving the degeneracy of the ground state. The tunneling amplitude and the effect of the dissipation in the superconductor are computed.

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页码：5206 / 5209

页数：4

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