TY  - JOUR
AU  - Kral, Petr
AU  - Graham, Jennifer
AU  - Sazgari, V.
AU  - Plokhikh, I.
AU  - Lukovkina, A.
AU  - Gerguri, O.
AU  - Biało, I.
AU  - Doll, A.
AU  - Martinelli, Leonardo
AU  - Oppliger, J.
AU  - Islam, S. S.
AU  - Spitaler, M.
AU  - Wang, K.
AU  - Salamin, M.
AU  - Luetkens, H.
AU  - Khasanov, R.
AU  - Zimmermann, M. V.
AU  - Yin, J.-X.
AU  - Wang, Ziqiang
AU  - Chang, J.
AU  - Monserrat, B.
AU  - Gawryluk, D.
AU  - von Rohr, F. O.
AU  - Kim, S.-W.
AU  - Guguchia, Zurab
TI  - Discovery of high-temperature charge order and time-reversal symmetry-breaking in the kagome superconductor YRu<sub>3</sub>Si<sub>2</sub>
JO  - Nature Communications
VL  - 17
IS  - 1
SN  - 2041-1723
CY  - [London]
PB  - Springer Nature
M1  - PUBDB-2026-00124
SP  - 1121
PY  - 2026
AB  - Identifying high-temperature unconventional charge order and superconductivity in kagome systems is crucial for understanding frustrated, correlated electrons and enabling future quantum technologies. Here, we report that the kagome superconductor YRu<sub>3</sub>Si<sub>2</sub> hosts an exceptional interplay of charge order, magnetism, and superconductivity, revealed through a comprehensive suite of muon spin rotation (μSR), magnetotransport, X-ray diffraction, and density functional theory (DFT). We identify a high-temperature charge-ordered state with propagation vector (1/2,0,0) and a record onset temperature of 800 K, unprecedented in kagome systems and quantum materials more broadly. μSR measurements further reveal time-reversal symmetry-breaking below 25 K and field-induced magnetism near 90 K, features mirrored in the magnetoresistance, which reaches 45
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1038/s41467-025-67881-4
UR  - https://bib-pubdb1.desy.de/record/643318
ER  -