TY - JOUR
T1 - Control of magneto-optical properties of cobalt-layers by adsorption of α-helical polyalanine self-assembled monolayers
AU - Sharma, Apoorva
AU - Matthes, Patrick
AU - Soldatov, Ivan
AU - Arekapudi, Sri Sai Phani Kanth
AU - Böhm, Benny
AU - Lindner, Marina
AU - Selyshchev, Oleksandr
AU - Thi Ngoc Ha, Nguyen
AU - Mehring, Michael
AU - Tegenkamp, Christoph
AU - Schulz, Stefan E.
AU - Zahn, Dietrich R.T.
AU - Paltiel, Yossi
AU - Hellwig, Olav
AU - Salvan, Georgeta
N1 - Publisher Copyright:
© The Royal Society of Chemistry 2020.
PY - 2020/9/14
Y1 - 2020/9/14
N2 - 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 α-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 α-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.
AB - 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 α-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 α-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.
UR - http://www.scopus.com/inward/record.url?scp=85090587363&partnerID=8YFLogxK
U2 - 10.1039/d0tc02734k
DO - 10.1039/d0tc02734k
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AN - SCOPUS:85090587363
SN - 2050-7534
VL - 8
SP - 11822
EP - 11829
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 34
ER -