OBSERVATION OF MACROSCOPIC SPIN PHENOMENA IN NANOMETER-SCALE MAGNETS

被引：109

作者：

AWSCHALOM, DD

MCCORD, MA

GRINSTEIN, G

机构：

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.65.783

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A scanning tunneling microscope is used to locally deposit arrays of nanometer-scale magnets directly within the superconducting planar input coil of an integrated dc SQUID microsusceptometer. Low-temperature frequency-dependent magnetic-susceptibility measurements reveal a narrow resonance which grows and becomes independent of decreasing temperature. Studies as a function of magnet volume, spacing, and applied field are compared to recent predictions for magnetic macroscopic quantum tunneling in small particles. © 1990 The American Physical Society.

引用

页码：783 / 786

页数：4

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