中国物理B ›› 2001, Vol. 10 ›› Issue (13): 186-194.

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

SPIN-DEPENDENT TUNNELING EFFECTS ON MAGNETIC NANOSTRUCTURES

M. Getzlaff, M. Bode, A. Kubetzka, O. Pietzsch, R. Wiesendanger   

  1. Institute of Applied Physics and Microstructure Research Center, University of Hamburg, Jungiusstrasse 11, D-20355 Hamburg, Germany
  • 收稿日期:2000-10-23 出版日期:2001-11-20 发布日期:2001-11-20
  • 基金资助:
    Project supported by the Deutsche Forschungsgemeinschaft (Grant No. Wi 1277/3), from the GIF (Grant No. I-550-184.14/97), and from the BMBF (Grant No. 13N7647).

SPIN-DEPENDENT TUNNELING EFFECTS ON MAGNETIC NANOSTRUCTURES

M. Getzlaff, M. Bode, A. Kubetzka, O. Pietzsch, R. Wiesendanger   

  1. Institute of Applied Physics and Microstructure Research Center, University of Hamburg, Jungiusstrasse 11, D-20355 Hamburg, Germany
  • Received:2000-10-23 Online:2001-11-20 Published:2001-11-20
  • Supported by:
    Project supported by the Deutsche Forschungsgemeinschaft (Grant No. Wi 1277/3), from the GIF (Grant No. I-550-184.14/97), and from the BMBF (Grant No. 13N7647).

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摘要： The contrast mechanism of spin-polarized scanning tunneling spectroscopy (SP-STS) is demontrated on in-plane magnetized Gd islands grown on W (110) using Fe-coated tips. The use of Gd-coated tips enables the imaging of the antiferromagnetic domain structure of Fe nanowires being perpendicularly magnetized grown on a stepped W(110) substrate. The influence of an external magnetic field on the nanowire domain structure is demonstrated. It is shown that the antiferromagnetic domain structure of the Fe nanowires strongly depends on the miscut of the W(110) substrate. While at high miscut the magnetization direction alternates between adjacent DL stripes it was found to alternate within single Fe DL stripes at low miscut. Nanoscale Fe islands with a height of two atomic layers were found to be single domain particles.

Abstract: The contrast mechanism of spin-polarized scanning tunneling spectroscopy (SP-STS) is demontrated on in-plane magnetized Gd islands grown on W (110) using Fe-coated tips. The use of Gd-coated tips enables the imaging of the antiferromagnetic domain structure of Fe nanowires being perpendicularly magnetized grown on a stepped W(110) substrate. The influence of an external magnetic field on the nanowire domain structure is demonstrated. It is shown that the antiferromagnetic domain structure of the Fe nanowires strongly depends on the miscut of the W(110) substrate. While at high miscut the magnetization direction alternates between adjacent DL stripes it was found to alternate within single Fe DL stripes at low miscut. Nanoscale Fe islands with a height of two atomic layers were found to be single domain particles.

Key words: spin-polarized scanning tunneling spectroscopy, magnetic nanowires, single domain particles

中图分类号: 

  • 6116P