Spin-Dependent Molecule Symmetry at a Pentacene-Co Spinterface

被引：21

作者：

Chu, Yu-Hsun ^{[1
]}

Hsu, Chuang-Han ^{[1
]}

Lu, Chun-I ^{[1
]}

Yang, Hung-Hsiang ^{[1
]}

Yang, Tsung-Han ^{[1
]}

Luo, Chi-Hung ^{[1
]}

Yang, Kai-Jheng ^{[1
]}

Hsu, Shih-Hao ^{[1
]}

Hoffmann, Germar ^{[1
,2
]}

Kaun, Chao-Cheng ^{[2
,3
]}

Lin, Minn-Tsong ^{[1
,4
]}

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan

[3] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

[4] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan

来源：

ACS NANO | 2015年 / 9卷 / 07期

关键词：

spin-polarized scanning tunneling spectroscopy; molecular symmetry; pentacene; cobalt island; spinterface; organic-metal hybridization; first-principles calculation; SCANNING-TUNNELING-MICROSCOPY; THIN-FILM TRANSISTORS; INTERFACE; INJECTION; ALGORITHM; TRANSPORT;

D O I：

10.1021/acsnano.5b03117

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Incorporating spin-polarized scanning tunneling microscopy (SP-STM) measurements and first-principles calculations, we resolve spin-polarized states and consequent features in a pentacene(PEN)-Co hybrid system. Symmetry reduction of PEN clarifies the PEN adsorption site and the Co stacking methods. Near the Fermi energy, the molecular symmetry is spin-dependently recovered and an inversion of spin-polarization in PEN with respect to Co is observed. The experimental findings and calculation results are interpreted by a p(z)-d hybridization model, in which spin-dependent bonding-antibonding splitting of molecular orbitals happens at metal organic spinterfaces.

引用

页码：7027 / 7032

页数：6

共 42 条

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