Open AccessOptical Chiral Induced Spin Selectivity XMCD Study
Author(s) -
Oren Ben Dor,
Shira Yochelis,
Hendrik Ohldag,
Yossi Paltiel
Publication year - 2018
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/chimia.2018.379
Subject(s) - magnetic circular dichroism , magnetization , circular polarization , materials science , spins , ferromagnetism , circular dichroism , condensed matter physics , molecule , spin (aerodynamics) , x ray magnetic circular dichroism , spin polarization , molecular physics , electron , chemistry , optics , physics , magnetic field , crystallography , spectral line , organic chemistry , quantum mechanics , astronomy , microstrip , thermodynamics
The chiral induced spin selectivity (CISS) effect in which selective transport of electron spins through helical chiral molecules occurs, has attracted a lot of attention in recent years. This effect was used to magnetize ferromagnetic (FM) samples by utilizing adsorbed chiral molecules. The electron transfer through the molecules was generated optically or electrically. In the optical configuration, circularly polarized light induced efficient magnetization by spin torque transfer (STT), using a hybrid of quantum dots (QDs) and chiral molecule self-assembled monolayer (SAM). Here, we use X-ray magnetic chiral dichroism (XMCD) spectroscopy in order to probe the optically induced magnetization on thin FM films. The results show differences in the FM magnetization depending on the optical circular polarization, matching previous non-local Hall probe measurements.