Spin dynamics of a quasi-one-dimensional electron in the quantum limit

Autor:	Fauzi, M. H., Takahashi, M., Aono, T., Hashimoto, K., Hirayama, Y.
Rok vydání:	2024
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
Popis:	We study electron spin dynamics whose movement is restricted to the lowest one dimensional subband channel ($G \le 2e^2/h $), through nuclear spin relaxation rate measurement ($1/T_1$). We observe an unusual double-peak structure in the $1/T_1$ profile below the lowest subband level, where the up and down spin edge channel is still largely overlap. This profile significantly deviates from the behavior predicted by a non-interacting electron model, in which the only source of relaxation is through thermal fluctuations near the Fermi level. Our experimental results, supported by theoretical calculations, suggest that enhanced electron-electron interactions at the center of a quantum point contact are the likely origin of the observed double-peak structures. Comment: 10 pages including supplementary materials
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2411.16060 Zobrazit plný text záznamu View this record from Arxiv