Evidence for hidden order and its potential correlation with electron-hole asymmetry in iridate superlattices
Abstract
Hidden order refers to an order that shapes the properties of quantum materials yet remains difficult to identify. Here we report signatures of a hidden order in doped iridate superlattices through an unexpected electron-hole asymmetry in the coupling between the insulating state and the antiferromagnetic (AFM) state. While carrier doping suppresses both states, they remain coupled in the electron-doped regime but decouple in the hole-doped regime. Structural analysis rules out octahedral rotation and tilting as the dominant origin of this asymmetry. Instead, magnetic characterization reveals evidences of a hidden order that only appears in the hole-doped regime. This hidden order emerges above TN and is closely associated with the AFM state, coinciding with an exceptionally strong magnetic scattering intensity and an anomalously robust magnetic coherence. Our results highlight that hole-doped iridates can be a promising platform for exploring hidden and unconventional ordering phenomena in spin-orbit-entangled quantum materials.
Related
- Dihadron azimuthal asymmetry and light-quark dipole moments at the Electron-Ion Collider
- Pressure engineering of the excitonic moiré-potential landscape and exciton-charge interplay in semiconductor moiré superlattices
- Contact Renormalization of One-Mode Electron Correlation: Validation in Four- and Ten-Electron Systems
- Same-spin correlation screens the exchange peak of the electron gas near 2kF
- Information-theoretic measures of electron correlation in a double quantum dot
BibTeX
@misc{qiao2026evidence,
title = {{Evidence for hidden order and its potential correlation with electron-hole asymmetry in iridate superlattices}},
author = {Zhihan Qiao and Han Zhang and Hangtian Wang and Deyang Li and Haiyang Zhang and Enyang Men and Junlei Jiang and Jingxin Chen and Yizhou Liu and Sang-Youn Park and Xiangnan Xie and MingLiang Tian and Haifeng Du and Ning Hao and Lin Hao},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.19334},
eprint = {2610.19334},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.19334},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Evidence for hidden order and its potential correlation with electron-hole asymmetry in iridate superlattices
AU - Zhihan Qiao
AU - Han Zhang
AU - Hangtian Wang
AU - Deyang Li
AU - Haiyang Zhang
AU - Enyang Men
AU - Junlei Jiang
AU - Jingxin Chen
AU - Yizhou Liu
AU - Sang-Youn Park
AU - Xiangnan Xie
AU - MingLiang Tian
AU - Haifeng Du
AU - Ning Hao
AU - Lin Hao
PY - 2026
DA - 2026/10/14
PB - arXiv
DO - 10.48550/arxiv.2610.19334
UR - https://arxiv.org/abs/2610.19334
AB - Hidden order refers to an order that shapes the properties of quantum materials yet remains difficult to identify. Here we report signatures of a hidden order in doped iridate superlattices through an unexpected electron-hole asymmetry in the coupling between the insulating state and the antiferromagnetic (AFM) state. While carrier doping suppresses both states, they remain coupled in the electron-doped regime but decouple in the hole-doped regime. Structural analysis rules out octahedral rotation and tilting as the dominant origin of this asymmetry. Instead, magnetic characterization reveals evidences of a hidden order that only appears in the hole-doped regime. This hidden order emerges above TN and is closely associated with the AFM state, coinciding with an exceptionally strong magnetic scattering intensity and an anomalously robust magnetic coherence. Our results highlight that hole-doped iridates can be a promising platform for exploring hidden and unconventional ordering phenomena in spin-orbit-entangled quantum materials.
ER -