@inproceedings{bb327efc8617413d9d3c16656a54dffb,
title = "Signatures of quantum spin interference in graphene-on-chromia heterostructures",
abstract = "We provide evidence of edge-state transport in graphene-on-chromia heterostructures, resulting from the presence of substrate- induced spin-orbit coupling (SOC). Low-temperature non-local spin-Hall measurements reveal large resistance fluctuations as the Fermi level is swept through the graphene bands. These features persist to much higher temperatures (>60 K) than is typical for mesoscopic effects in normal metals and semiconductors. They are moreover invariant to the application of magnetic fields as high as 7 T, suggestive of edge-like transport. To account for our observations, we formulate a model of non-local quantum transport in graphene that accounts for the impact of an externally induced SOC. The model reproduces key features of experiment and shows that the non-local transport arises from an interplay between topologically protected edge currents - analogous to the conductive modes of a two-dimensional (2D) topological insulator - and bulk-like conduction, as the carrier density in the 2D channel is gated.",
keywords = "edge states, mesoscopics, non-local transport, spin-Hall effect, spintronics",
author = "Keke He and Hamed Vakili and Ather Mahmood and Christian Binek and Dowben, \{Peter A.\} and Kovalev, \{Alexey A.\} and Bird, \{Jonathan B.\}",
note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; 18th Spintronics ; Conference date: 03-08-2025 Through 07-08-2025",
year = "2025",
month = sep,
day = "18",
doi = "10.1117/12.3067550",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jean-Eric Wegrowe and Friedman, \{Joseph S.\} and Manijeh Razeghi and Henri Jaffres",
booktitle = "Spintronics XVIII",
address = "United States",
}