Optical Chiral Induced Spin Selectivity XMCD Study

Authors

  • Oren Ben Dor Applied Physics Department and the Center for Nano-Science and Nano-Technology The Hebrew University of Jerusalem Jerusalem 9190401 Israel
  • Shira Yochelis Applied Physics Department and the Center for Nano-Science and Nano-Technology The Hebrew University of Jerusalem Jerusalem 9190401 Israel
  • Hendrik Ohldag Stanford Synchrotron Radiation Laboratory Stanford University, P.O. Box 20450, Menlo Park California 94025, USA
  • Yossi Paltiel Applied Physics Department and the Center for Nano-Science and Nano-Technology The Hebrew University of Jerusalem Jerusalem 9190401 Israel. paltiel@mail.huji.ac.il

DOI:

https://doi.org/10.2533/chimia.2018.379

Keywords:

Chiral induced spin selectivity, Magnetic chiral dichroism, Quantum dots, Spintronics

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.

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Published

2018-06-27

How to Cite

[1]
O. B. Dor, S. Yochelis, H. Ohldag, Y. Paltiel, Chimia 2018, 72, 379, DOI: 10.2533/chimia.2018.379.