# Simultaneous Measurement of Resistively and Optically Detected Nuclear Magnetic Resonance in the $\\nu=2/3$ Fractional Quantum Hall Regime

Source: [Simultaneous Measurement of Resistively and Optically Detected Nuclear Magnetic Resonance in the $\\nu=2/3$ Fractional Quantum Hall Regime](<https://www.sota2.com/research/paper/68fa33ed1e209131ce893e92>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T20:20:01.480Z

Authors: K. Akiba, K. Nagase, Y. Hirayama

Published: 2016-07-14T11:41:00.000Z

## Abstract

We observe nuclear magnetic resonance (NMR) in the fractional quantum Hall regime at Landau level filling factor $\\nu=2/3$ from simultaneous measurement of longitudinal resistance and photoluminescence (PL). The dynamic nuclear spin polarization is induced by applying a huge electronic current at the spin phase transition point of $\\nu=2/3$. The NMR spectra obtained from changes in resistance and PL intensity are qualitatively the same; that is, the Knight shift (spin polarized region) and zero-shift (spin unpolarized region) resonances are observed in both. The observed change in PL intensity is interpreted as a consequence of the trion scattering induced by polarized nuclear spins. We conclude that both detection methods probe almost the same local phenomena.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1607.04094>)

[PDF](<https://arxiv.org/pdf/1607.04094.pdf>)