OBSERVATION OF VACUUM TUNNELING OF SPIN-POLARIZED ELECTRONS WITH THE SCANNING TUNNELING MICROSCOPE

被引：433

作者：

WIESENDANGER, R

GUNTHERODT, HJ

GUNTHERODT, G

GAMBINO, RJ

RUF, R

机构：

[1] RHEIN WESTFAL TH AACHEN,INST PHYS 2,W-5100 AACHEN,GERMANY

[2] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.65.247

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Vacuum tunneling of spin-polarized electrons from a ferromagnetic CrO2 tip into a Cr(001) single crystal has been observed by means of a scanning tunneling microscope (STM) operated in UHV. Topographic STM images of the Cr(001) surface using a tungsten tip confirm the model of topological antiferromagnetism between ferromagnetic terraces separated by monatomic steps of 0.144 nm height. With CrO2 tips, the measured step-height values alternate around the mean value of 0.144 nm due to an additional contribution from spin-polarized-electron tunneling. © 1990 The American Physical Society.

引用

页码：247 / 250

页数：4

共 23 条

[1] SPIN-POLARIZED SECONDARY ELECTRONS FROM A SCANNING TUNNELING MICROSCOPE IN FIELD-EMISSION MODE [J].