2021
DOI: 10.48550/arxiv.2104.00146
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Resistively detected NMR as a probe of the topological nature of conducting edge/surface states

Zekun Zhuang,
V. F. Mitrović,
J. B. Marston

Abstract: Electron spins in edge or surface modes of topological insulators (TIs) with strong spin-orbit coupling cannot be directly manipulated with microwaves due to the locking of electron spin to its momentum. We show by contrast that a resistively detected nuclear magnetic resonance (RDNMR) based technique can be used to probe the helical nature of surface conducting states. In such experiments, one applies a radio frequency (RF) field to reorient nuclear spins that then couple to electronic spins by the hyperfine … Show more

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