1. Optical Chiral Induced Spin Selectivity XMCD Study
- Author
-
Shira Yochelis, Oren Ben Dor, Hendrik Ohldag, and Yossi Paltiel
- Subjects
Magnetic chiral dichroism ,Materials science ,Quantum dots ,Spin-transfer torque ,Chiral induced spin selectivity ,02 engineering and technology ,General Medicine ,General Chemistry ,Spintronics ,Dichroism ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Molecular physics ,0104 chemical sciences ,Electron transfer ,Magnetization ,Condensed Matter::Materials Science ,Chemistry ,Ferromagnetism ,Quantum dot ,0210 nano-technology ,Spin (physics) ,QD1-999 ,Circular polarization - Abstract
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.
- Published
- 2018