Direct observation of a highly spin-polarized organic spinterface at room temperature

被引：112

作者：

Djeghloul, F. ^{[1
]}

Ibrahim, F. ^{[1
]}

Cantoni, M. ^{[2
]}

Bowen, M. ^{[1
]}

Joly, L. ^{[1
,3
]}

Boukari, S. ^{[1
]}

Ohresser, P. ^{[4
]}

Bertran, F. ^{[4
]}

Le Fevre, P. ^{[4
]}

Thakur, P. ^{[5
]}

Scheurer, F. ^{[1
]}

Miyamachi, T. ^{[6
,7
]}

Mattana, R. ^{[8
,9
]}

Seneor, P. ^{[8
,9
]}

Jaafar, A. ^{[1
]}

Rinaldi, C. ^{[2
]}

Javaid, S. ^{[1
]}

Arabski, J. ^{[1
]}

Kappler, J. -P ^{[1
]}

Wulfhekel, W. ^{[6
,7
]}

Brookes, N. B. ^{[5
]}

Bertacco, R. ^{[2
]}

Taleb-Ibrahimi, A. ^{[4
]}

Alouani, M. ^{[1
]}

Beaurepaire, E. ^{[1
]}

Weber, W. ^{[1
]}

机构：

[1] IPCMS UMR FSOH CNRS UdS, F-67034 Strasbourg, France

[2] Politecn Milan, LNESS Dipartimento Fis, I-22100 Como, Italy

[3] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[4] Synchrotron Soleil, F-91192 Gif Sur Yvette, France

[5] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[6] Karlsruhe Inst Technol, Inst Phys, D-76131 Karlsruhe, Germany

[7] Karlsruhe Inst Technol, Ctr Funct Nanostruct, D-76131 Karlsruhe, Germany

[8] CNRS Thales, Unite Mixte Phys, F-91767 Palaiseau, France

[9] Univ Paris Sud, F-91405 Orsay, France

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

关键词：

TUNNEL-JUNCTIONS; GIANT MAGNETORESISTANCE; INJECTION; INTERFACE; METAL; FE;

D O I：

10.1038/srep01272

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Organic semiconductors constitute promising candidates toward large-scale electronic circuits that are entirely spintronics-driven. Toward this goal, tunneling magnetoresistance values above 300% at low temperature suggested the presence of highly spin-polarized device interfaces. However, such spinterfaces have not been observed directly, let alone at room temperature. Thanks to experiments and theory on the model spinterface between phthalocyanine molecules and a Co single crystal surface, we clearly evidence a highly efficient spinterface. Spin-polarised direct and inverse photoemission experiments reveal a high degree of spin polarisation at room temperature at this interface. We measured a magnetic moment on the molecule's nitrogen p orbitals, which substantiates an ab-initio theoretical description of highly spin-polarised charge conduction across the interface due to differing spinterface formation mechanisms in each spin channel. We propose, through this example, a recipe to engineer simple organic-inorganic interfaces with remarkable spintronic properties that can endure well above room temperature.

引用

页数：7

共 38 条

[1] Unravelling the role of the interface for spin injection into organic semiconductors [J].