18–20 Sept 2025
Kiel
Europe/Berlin timezone

Resistively detected electron spin resonance and g factor in few-layer exfoliated MoS2 devices

19 Sept 2025, 11:00
12m
LS11-109

LS11-109

Talk Quantum Effects, Materials Physics Parallel

Speaker

Chithra H. Sharma (CAU Kiel, Universität Hamburg)

Description

MoS$_2$ has recently emerged as a promising material for enabling quantum devices and spintronic applications. In this context, the demonstration of resistively detected electron spin resonance (RD-ESR) and the determination and improved physical understanding of the g factor are of great importance. However, its application and RD-ESR studies have been limited so far by Schotttky or high-resistance contacts to MoS$_2$. Here, we exploit naturally n-doped few-layer MoS$_2$ devices with ohmic tin (Sn) contacts that allow the electrical study of spin phenomena. Resonant excitation of electron spins and resistive detection is a possible path to exploit the spin effects in MoS$_2$ devices. Using RD-ESR, we determine the g factor of few-layer MoS$_2$ to be $\approx$1.92 and observe that the g factor value is independent of the charge carrier density within the limits of our measurements.

Primary author

Chithra H. Sharma (CAU Kiel, Universität Hamburg)

Co-authors

Mr Appanna Parvangada (Universität Hamburg) Prof. Kai Rossnagel (CAU Kiel, DESY) Dr Lars Tiemann (Universität Hamburg) Dr Jens Martin (IKZ Berlin) Prof. Robert Blick (Universität Hamburg)

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