Deep Co penetration and spin-polarization of C60 molecules at hybridized Co-C60 interfaces

被引：16

作者：

Cheng, Pei-Yu ^{[1
]}

Chiang, Meng-Ruei ^{[1
,2
,3
]}

Chan, Yuet-Loy ^{[1
]}

Hsu, Yao-Jane ^{[1
]}

Wang, Pen-Cheng ^{[2
,3
]}

Wei, D. H. ^{[1
,2
,4
]}

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[2] Natl Tsing Hua Univ, Grad Program Sci & Technol Synchrotron Light Sour, Hsinchu 30013, Taiwan

[3] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan

[4] Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 80424, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 04期

关键词：

PHOTOEMISSION; INJECTION; DICHROISM;

D O I：

10.1063/1.4863414

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We used near-edge x-ray absorption fine structure spectroscopy to identify the interplays at organic semiconductor-ferromagnet interfaces. When monitoring the L-edge intensity of 0.36 nm Co depositing on C-60 films of various thicknesses, we detected weaker Co signal from structures with larger C-60 thicknesses. Having determined that the electron mean escape depth in C-60 is 4.9 nm, further model analysis indicates that the decline of spectral intensity is due to deep penetration of Co clusters. Finally, C K-edge spectra reveal clear evidences of orbital hybridization between Co and C-60 as well as a visible dichroic effect at 125 K. (C) 2014 AIP Publishing LLC.

引用

页数：5

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