MAGNETIC-FIELD TUNED ENERGY OF A SINGLE 2-LEVEL SYSTEM IN A MESOSCOPIC METAL

被引：59

作者：

ZIMMERMAN, NM

GOLDING, B

HAEMMERLE, WH

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.67.1322

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the effect of an external magnetic field H on an individual tunneling system by measuring the time-dependent bistable conductance of a submicron Bi sample near 1 K. The amplitude of the dynamic conductance fluctuations is a random function of H. The transition rates are significantly modified by the field, from which we infer an H-dependent energy splitting. This splitting is symmetric near H=0, but exhibits nonmonotonic features at higher fields, possibly arising from the coupling of local electron-density fluctuations to the defect.

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页码：1322 / 1325

页数：4

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