Control of magneto-optical properties of cobalt-layers by adsorption of α-helical polyalanine self-assembled monolayers

被引：11

作者：

Sharma, Apoorva ^{[1
]}

Matthes, Patrick ^{[2
]}

Soldatov, Ivan ^{[3
,4
]}

Arekapudi, Sri Sai Phani Kanth ^{[1
]}

Boehm, Benny ^{[1
,5
]}

Lindner, Marina ^{[1
]}

Selyshchev, Oleksandr ^{[1
]}

Nguyen Thi Ngoc Ha ^{[1
]}

Mehring, Michael ^{[5
,6
]}

Tegenkamp, Christoph ^{[1
]}

Schulz, Stefan E. ^{[2
]}

Zahn, Dietrich R. T. ^{[1
,5
]}

Paltiel, Yossi ^{[7
,8
]}

Hellwig, Olav ^{[1
,5
,9
]}

Salvan, Georgeta ^{[1
,5
]}

机构：

[1] Tech Univ Chemnitz, Inst Phys, D-09126 Chemnitz, Germany

[2] Fraunhofer Inst Elect Nanosyst, D-09126 Chemnitz, Germany

[3] Leibniz Inst Solid State & Mat Res IFW Dresden, D-01069 Dresden, Germany

[4] Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620002, Russia

[5] Tech Univ Chemnitz, Ctr Mat Architecture & Integrat Nanomembranes MAI, D-09126 Chemnitz, Germany

[6] Tech Univ Chemnitz, Inst Chem, D-09126 Chemnitz, Germany

[7] Hebrew Univ Jerusalem, Dept Appl Phys, Jerusalem, Israel

[8] Hebrew Univ Jerusalem, Israel Ctr Nanosci & Nanotechnol, Jerusalem, Israel

[9] Helmholtz Zentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01328 Dresden, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2020年 / 8卷 / 34期

关键词：

CHIRAL MOLECULES; INTERFACE; TRANSPORT;

D O I：

10.1039/d0tc02734k

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The adsorption of chiral molecules was recently shown to trigger a change in the magnetisation of mesoscopic magnetic domains in a ferromagnetic underlayer. In this work, we investigated the macroscopic (magneto-)optical response of chemisorbed alpha-helical polyalanine self-assembled monolayers (SAMs) on a gold and gold-capped-cobalt thin film on Au substrates using spectroscopic ellipsometry and magneto-optical Kerr effect spectroscopy and microscopy. The optical and magneto-optical spectra reveal selective chemisorption of the alpha-helical polyalanine molecules depending on the orientation of the substrate remanent magnetisation during the SAMs process. Moreover, a sign change of the magneto-optical response was observed in some of the magnetic substrates after the chiral SAMs formation.

引用

页码：11822 / 11829

页数：8

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