Distance- and spin-resolved spectroscopy of iridium atoms on an iron bilayer

被引：3

作者：

Schoeneberg, Johannes ^{[1
]}

Caffrey, Nuala Mai ^{[2
,3
]}

Ferriani, Paolo ^{[2
]}

Heinze, Stefan ^{[2
]}

Berndt, Richard ^{[1
]}

机构：

[1] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

[2] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

[3] Linkoping Univ, Dept Phys Chem & Biol IFM, SE-58183 Linkoping, Sweden

来源：

PHYSICAL REVIEW B | 2016年 / 94卷 / 11期

关键词：

SCANNING TUNNELING SPECTROSCOPY; AUGMENTED-WAVE METHOD; POLARIZATION; MAGNETORESISTANCE; NANOSCALE; STATE;

D O I：

10.1103/PhysRevB.94.115418

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The induced spin polarization of Ir atoms on a ferromagnetic Fe double layer on W(110) has been investigated with spin-polarized scanning tunneling microscopy. An unoccupied state is observed with a spin polarization exceeding 60% that is inverted with respect to the Fe layer. This inversion is due to the tunneling gap acting as an orbital and spin filter. Distance dependent measurements show that the spin polarization remains approximately constant over the entire experimentally accessible range, from far in the tunneling regime to 1 angstrom from the point of contact formation. This is corroborated by density functional theory calculations which show that the inversion of spin polarization occurs within 0.5 angstrom of the adatom.

引用

页数：6

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