Peer-reviewedCC BY-NC-ND 4.0Proceedings of the National Academy of Sciences of the United States of America
High-resolution measurements of thermal conductivity matrix and search for thermal Hall effect in La2CuO4
- 1Department of Physics, Princeton University, Princeton, NJ 08544
- 2Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY 11973
- 3Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794
Abstract
We investigated the longitudinal thermal conductivity κxx and thermal Hall conductivity κxy in La2CuO4 at temperatures T between 2 and 20 K in magnetic fields H up to 10 T. Within the temperature and field intervals studied, we do not resolve any thermal Hall signal with a conservative upper bound of |κxy/T|<1×10−4 Wm−1K−2. The longitudinal thermal conductivity κxx/T agrees well with previous reports, in both its magnitude and T dependence. Both κxx and κxy were measured using the field-swept protocol. To achieve high resolution, we carefully took into account relaxation effects after each step-increase in H. At low T, we find a weak linear decrease in κxx/T vs. H, as well as weak hystereses near the metamagnetic transitions of the spins.
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BibTeX
@article{hu2026highresolution,
title = {{High-resolution measurements of thermal conductivity matrix and search for thermal Hall effect in La2CuO4}},
author = {Jiayi Hu and Haozhi Xu and Genda Gu and Qiang Li and N. P. Ong},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
year = {2026},
month = oct,
doi = {10.1073/pnas.2611564123},
url = {https://doi.org/10.1073/pnas.2611564123},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - High-resolution measurements of thermal conductivity matrix and search for thermal Hall effect in La2CuO4
AU - Jiayi Hu
AU - Haozhi Xu
AU - Genda Gu
AU - Qiang Li
AU - N. P. Ong
PY - 2026
DA - 2026/10/23
JO - Proceedings of the National Academy of Sciences of the United States of America
DO - 10.1073/pnas.2611564123
UR - https://doi.org/10.1073/pnas.2611564123
AB - We investigated the longitudinal thermal conductivity κxx and thermal Hall conductivity κxy in La2CuO4 at temperatures T between 2 and 20 K in magnetic fields H up to 10 T. Within the temperature and field intervals studied, we do not resolve any thermal Hall signal with a conservative upper bound of |κxy/T|<1×10−4 Wm−1K−2. The longitudinal thermal conductivity κxx/T agrees well with previous reports, in both its magnitude and T dependence. Both κxx and κxy were measured using the field-swept protocol. To achieve high resolution, we carefully took into account relaxation effects after each step-increase in H. At low T, we find a weak linear decrease in κxx/T vs. H, as well as weak hystereses near the metamagnetic transitions of the spins.
SN - 0027-8424
SN - 1091-6490
ER -