TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCore.6.1.008
TI  - Intertwining orbital current order and superconductivity in kagome metal
PY  - 2023/02/09
UR  - https://scipost.org/SciPostPhysCore.6.1.008
JF  - SciPost Physics Core
JA  - SciPost Phys. Core
VL  - 6
IS  - 1
SP  - 008
A1  - Yang, Hyeok-Jun
AU  - Kim, Hee Seung
AU  - Jeong, Min Yong
AU  - Kim, Yong Baek
AU  - Han, Myung Joon
AU  - Lee, SungBin
AB  - The nature of superconductivity in newly discovered kagome materials, $\text{AV}_3\text{Sb}_5$ (A = K, Rb, Cs), has been a subject of intense debate. Recent experiments suggest the presence of orbital current order on top of the charge density wave (CDW) and superconductivity. Since the orbital current order breaks time-reversal symmetry, it may fundamentally affect possible superconducting states. In this work, we investigate the mutual influence between the orbital current order and superconductivity in kagome metal with characteristic van Hove singularity (vHS). By explicitly deriving the Landau-Ginzburg theory, we classify possible orbital current order and superconductivity. It turns out that distinct unconventional superconductivities are expected, depending on the orbital current ordering types. Thus, this information can be used to infer the superconducting order parameter when the orbital current order is identified and vice versa. We also discuss possible experiments that may distinguish such superconducting states coexisting with the orbital current order.
ER  -

@Article{10.21468/SciPostPhysCore.6.1.008,
	title={{Intertwining orbital current order and superconductivity in kagome metal}},
	author={Hyeok-Jun Yang and Hee Seung Kim and Min Yong Jeong and Yong Baek Kim and Myung Joon Han and SungBin Lee},
	journal={SciPost Phys. Core},
	volume={6},
	pages={008},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCore.6.1.008},
	url={https://scipost.org/10.21468/SciPostPhysCore.6.1.008},
}