Local Control of Single Atom Magnetocrystalline Anisotropy

被引：97
|
作者：
Bryant, B. [1 ]
Spinelli, A. [1 ]
Wagenaar, J. J. T. [1 ]
Gerrits, M. [1 ]
Otte, A. F. [1 ]
机构：
[1] Delft Univ Technol, Kavli Inst Nanosci, Dept Quantum Nanosci, NL-2628 CJ Delft, Netherlands
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 12期
关键词：
MAGNETIC-ANISOTROPY; SPIN; SCALE;
D O I：
10.1103/PhysRevLett.111.127203
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Individual Fe atoms on a Cu2N/Cu(100) surface exhibit strong magnetic anisotropy due to the crystal field. We show that we can controllably enhance or reduce this anisotropy by adjusting the relative position of a second nearby Fe atom, with atomic precision, in a low-temperature scanning tunneling microscope. Local inelastic electron tunneling spectroscopy, combined with a qualitative first-principles model, reveal that the change in uniaxial anisotropy is driven by local strain due to the presence of the second Fe atom.
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页数：5
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