A rhombic spin-1 interpretation of a room-temperature GaN emitter
Abstract
Single defects in GaN show optically detected magnetic resonance at room temperature. In the more abundant class, a minimal S=3/2 model leaves a g≈ 4 line unexplained. For one defect, this line lies near the sum of the two outer lines, consistent with transitions among three shared levels. A rhombic S=1 model reproduces the three line positions with rms errors of 8.1-9.8 MHz. The tested second-order S=3/2 fits containing all three transitions and the published minimal model do not reproduce these positions. A ladder fitted to the strong lines remains viable if the g≈ 4 line is a separate transition near the sum of the outer two. An unresolved frequency-window shift prevents the existing data from establishing the S=1 assignment uniquely. We propose a zero-field sweep that directly tests the isolated S=1 assignment.
Related
- Optical Detection of Coherent Nuclear Spin Control in a Molecular System at Room Temperature
- Symmetry-breaking chelation enables room-temperature all-optical spin coherence readout of aqueous Cu(II) for chemoselective discrimination
- Room-temperature near-infrared optical readout of triplet spin states integrated in carbon nanotubes towards quantum sensing
- Demonstration of room-temperature, magnetic-field-free, and ultralow-power spin-orbit torque logic device based on composition-uniform van der Waals magnet Fe3GaTe2
- Enhanced room-temperature spin transport in a deuterated molecular single crystal
BibTeX
@misc{hashemi2026rhombic,
title = {{A rhombic spin-1 interpretation of a room-temperature GaN emitter}},
author = {Daniel Hashemi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.39081},
eprint = {2610.39081},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.39081},
}
RIS
TY - UNPB
TI - A rhombic spin-1 interpretation of a room-temperature GaN emitter
AU - Daniel Hashemi
PY - 2026
DA - 2026/10/29
PB - arXiv
DO - 10.48550/arxiv.2610.39081
UR - https://arxiv.org/abs/2610.39081
AB - Single defects in GaN show optically detected magnetic resonance at room temperature. In the more abundant class, a minimal S=3/2 model leaves a g≈ 4 line unexplained. For one defect, this line lies near the sum of the two outer lines, consistent with transitions among three shared levels. A rhombic S=1 model reproduces the three line positions with rms errors of 8.1-9.8 MHz. The tested second-order S=3/2 fits containing all three transitions and the published minimal model do not reproduce these positions. A ladder fitted to the strong lines remains viable if the g≈ 4 line is a separate transition near the sum of the outer two. An unresolved frequency-window shift prevents the existing data from establishing the S=1 assignment uniquely. We propose a zero-field sweep that directly tests the isolated S=1 assignment.
ER -