Interband scattering- and nematicity-induced quantum oscillation frequency in FeSe
arXiv:2309.04237 · doi:10.1103/PhysRevB.109.L081109
Abstract
Understanding the nematic phase observed in the iron-chalcogenide materials is crucial for describing their superconducting pairing. Experiments on FeSeS showed that one of the slow Shubnikov--de Haas quantum oscillation frequencies disappears when tuning the material out of the nematic phase via chemical substitution or pressure, which has been interpreted as a Lifshitz transition [Coldea et al., npj Quant Mater 4, 2 (2019), Reiss et al., Nat. Phys. 16, 89-94 (2020)]. Here, we present a generic, alternative scenario for a nematicity-induced sharp quantum oscillation frequency which disappears in the tetragonal phase and is not connected to an underlying Fermi surface pocket. We show that different microscopic interband scattering mechanisms - for example, orbital-selective scattering - in conjunction with nematic order can give rise to this quantum oscillation frequency beyond the standard Onsager relation. We discuss implications for iron-chalcogenides and the interpretation of quantum oscillations in other correlated materials.
References in corpus (20)
- The Kernel Polynomial Method
- Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor
- Orbital-driven nematicity in FeSe
- Field-induced superconducting phase of FeSe in the BCS-BEC cross-over
- Crystal structure of the new FeSe1-x superconductor
- Electronic structure of the iron-based superconductor LaOFeP
- Lifting of xz/yz orbital degeneracy at the structural transition in detwinned FeSe
- The key ingredients of the electronic structure of FeSe
- Anomalous Fermi surface in FeSe seen by Shubnikov-de Haas oscillation measurements
- Quantum oscillations in the parent magnetic phase of an iron arsenide high temperature superconductor
- Excitons in topological Kondo insulators - theory of thermodynamic and transport anomalies in SmB
- ARPES measurements of the superconducting gap of Fe-based superconductors and their implications to the pairing mechanism
- Quantum oscillations in interaction-driven insulators
- Spontaneous orbital polarization in the nematic phase of FeSe
- Quantum Oscillations of the Quasiparticle Lifetime in a Metal
- Theory of Difference Frequency Quantum Oscillations
- Quantum oscillations in a doped Mott insulator beyond Onsager's relation
- Low-frequency Quantum Oscillations from Interactions in Layered Metals
- Magnetotransport of multiple-band nearly-antiferromagnetic metals due to "hot-spot" scattering
- Gate voltage dependent Rashba spin splitting in hole transverse magnetic focussing