Cu Metal/Mn Phthalocyanine Organic Spinterfaces atop Co with High Spin Polarization at Room Temperature

Urbain E.; Ibrahim F.; Studniarek M.; Nyakam F. Ngassam; Joly L.; Arabski J.; Scheurer F.; Bertran F.; Le Fevre P.; Garreau G.; Denys E.; Wetzel P.; Alouani M.; Beaurepaire E.; Boukari S.; Bowen M.; Weber W.

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Cu Metal/Mn Phthalocyanine Organic Spinterfaces atop Co with High Spin Polarization at Room Temperature

机译：室温下具有高自旋极化的Co上的Cu金属/ Mn酞菁有机界面

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The organic spinterface describes the spin-polarized properties that develop, due to charge transfer, at the interface between a ferromagnetic metal (FM) and the molecules of an organic semiconductor. However, assembling this interface may degrade the properties of its constituents. To circumvent this issue, one can separate the molecular and FM films using a less reactive nonmagnetic metal (NM). Spin-resolved photoemission spectroscopy measurements on the prototypical system Co(001)//Cu/Mn-phthalocyanine (MnPc) reveal at room temperature a high spin polarization P of the Cu/MnPc spinterface atop ferromagnetic Co. Surprisingly, it is found that the Cu thickness dependence of P remains essentially constant up to 10 monolayers (ML), which is inconsistent with the description of indirect exchange coupling between the Co layer and the molecule's Mn site. Ab initio calculations account for this fundamental discrepancy by showing that the topmost Cu layer before MnPc adsorption is already significantly spin-polarized, and contributes to the formation of the Cu/MnPc spinterface atop Co. The results open a route toward 1) integrating electronically fragile molecules within organic spinterfaces and 2) electrically manipulating molecular spin chains using the well-documented spin-transfer torque properties of the FM/NM bilayer.

机译：有机界面描述了由于电荷转移而在铁磁金属（FM）与有机半导体分子之间的界面上形成的自旋极化性质。但是，组装此界面可能会降低其组成部分的属性。为了避免这一问题，可以使用反应性较小的非磁性金属（NM）分离分子膜和FM膜。在原型系统Co（001）// Cu / Mn-酞菁（MnPc）上的自旋分辨光发射光谱测量显示，在室温下，铁磁Co上的Cu / MnPc界面的自旋极化P高。令人惊讶地，发现P的Cu厚度依存性在10个单层（ML）内基本保持恒定，这与Co层与分子的Mn位点之间的间接交换偶联的描述不一致。从头算就可以说明这一基本差异，这表明在MnPc吸附之前最顶层的Cu层已经明显自旋极化，并有助于在Co顶部形成Cu / MnPc界面。结果为1）集成电子易碎性开辟了道路有机界面中的分子自旋； 2）使用FM / NM双层有据可查的自旋转移扭矩特性来电操纵分子自旋链。

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来源
《Advanced Functional Materials》 |2018年第29期|1707123.1-1707123.6|共6页
作者
Urbain E.; Ibrahim F.; Studniarek M.; Nyakam F. Ngassam; Joly L.; Arabski J.; Scheurer F.; Bertran F.; Le Fevre P.; Garreau G.; Denys E.; Wetzel P.; Alouani M.; Beaurepaire E.; Boukari S.; Bowen M.; Weber W.;
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作者单位

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France;

Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France;

Univ Haute Alsace, Inst Sci Mat Mulhouse, CNRS UMR 7361, F-68057 Mulhouse, France;

Univ Haute Alsace, Inst Sci Mat Mulhouse, CNRS UMR 7361, F-68057 Mulhouse, France;

Univ Haute Alsace, Inst Sci Mat Mulhouse, CNRS UMR 7361, F-68057 Mulhouse, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

Univ Strasbourg, Inst Phys & Chim Mat Strasbourg, CNRS UMR 7504, 23 Rue Loess,BP 43, F-67034 Strasbourg 2, France;

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正文语种 eng
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关键词
interface states; metal-organic interfaces; organic spintronics; spin chains; spin crossover;

机译：界面态;金属-有机界面;有机自旋电子学;自旋链;自旋交叉;

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专利

1. Large Spatial Spin Polarization at Benzene/La2/3Sr1/3MnO3 Spinterface: Toward Organic Spintronic Devices [J] . Zhang Qian, Yin Li, Mi Wenbo, The journal of physical chemistry, C. Nanomaterials and interfaces . 2016,第11期

机译：苯/ La2 / 3Sr1 / 3MnO3界面处的大空间自旋极化：向有机自旋电子器件发展
2. Spin Polarization of Metal (Mn, Fe, Cu, and Mg) and Metal-Free Phthalocyanines on an Fe(100) Substrate [J] . T. Suzuki, M. Kurahashi, X. Ju, The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2002,第44期

机译：Fe（100）基底上的金属（Mn，Fe，Cu和Mg）和无金属酞菁的自旋极化
3. Electronic Structure and Spin Polarization of Metal (Mn, Fe, Cu) Phthalocyanines on an Fe(100) Surface by First-Principles Calculations [J] . X. Sun, B. Wang, Y. Yamauchi The journal of physical chemistry, C. Nanomaterials and interfaces . 2012,第35期

机译：第一性原理计算Fe（100）表面上金属（Mn，Fe，Cu）酞菁的电子结构和自旋极化
4. Direct observation of a highly spin-polarized organic spinterface at room temperature [C] . F. Djeghloul, F. Ibrahim, M. Cantoni, Spintronics symposium . 2014

机译：在室温下直接观察到高度自旋极化的有机界面
5. The study of new electronic materials: Organometallic chemical vapor deposition of high-temperature superconducting thin films and synthesis and characterization of phthalocyanine molecular metals [D] . Tonge, Lauren Marie 1989

机译：新型电子材料的研究：高温超导薄膜的有机金属化学气相沉积以及酞菁分子金属的合成与表征
6. Synthesis of Spinel Ferrite MFe2O4 (M = Co Cu Mn and Zn) for Persulfate Activation to Remove Aqueous Organics: Effects of M-Site Metal and Synthetic Method [O] . Guang Xian, Shengyan Kong, Qiangang Li, 2020

机译：尖晶石型铁氧体MFe2O4（M = CoCuMn和Zn）的过硫酸盐活化以去除有机物的合成：M站点金属的影响和合成方法
7. Cu metal / Mn phthalocyanine organic spinterfaces atop Co with high spin polarization at room temperature [O] . Urbain, E., Ibrahim, F., Studniarek, M., 2017

机译：Cu金属/ mn酞菁有机接头在Co上面具有高自旋度在室温下极化

Cu Metal/Mn Phthalocyanine Organic Spinterfaces atop Co with High Spin Polarization at Room Temperature

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