Detection of Electron Paramagnetic Resonance Spectra of Optically Induced Carriers with the Properties of the Effective Mass in the WS2 Transition Metal Dichalcogenide

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Abstract

The spin properties of transition metal dichalcogenides are of interest for applications in spintronics. Anisotropic electron paramagnetic resonance spectra in a WS2 single crystal under optical excitation have been detected. These spectra assumingly belong to localized carriers near the valence band and reflect features of the 5d shell of the crystal. It has been shown that the g-factor for the magnetic field perpendicular to the c‑axis of the crystal (in-plane magnetic field) is larger than that for the magnetic field parallel to the c‑axis (perpendicular to the layer plane), which can provide information on the type of the 5d function. The discussed center is most likely described by the wavefunction, which can be associated with the valence band of the crystal.

About the authors

R. A Babunts

Ioffe Institute, 194021, St. Petersburg, Russia

Email: batueva@mail.ioffe.ru

A. V Batueva

Ioffe Institute, 194021, St. Petersburg, Russia

Email: batueva@mail.ioffe.ru

A. S Gurin

Ioffe Institute, 194021, St. Petersburg, Russia

Email: batueva@mail.ioffe.ru

K. V Likhachev

Ioffe Institute, 194021, St. Petersburg, Russia

Email: batueva@mail.ioffe.ru

E. V Edinach

Ioffe Institute, 194021, St. Petersburg, Russia

Email: batueva@mail.ioffe.ru

P. G Baranov

Ioffe Institute, 194021, St. Petersburg, Russia

Author for correspondence.
Email: batueva@mail.ioffe.ru

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