Dynamics and resilience of the unconventional charge density wave in ScV6Sn6 bilayer kagome metal
Abstrak
Abstract Long-range electronic ordering descending from a metallic parent state constitutes a rich playground to study the interplay of structural and electronic degrees of freedom. In this framework, kagome metals are in the most interesting regime where both phonon and electronically mediated couplings are significant. Several of these systems undergo a charge density wave transition. However, to date, the origin and the main driving force behind this charge order is elusive. Here, we use the kagome metal ScV6Sn6 as a platform to investigate this problem, since it features both a kagome-derived nested Fermi surface and van-Hove singularities near the Fermi level, and a charge-ordered phase that strongly affects its physical properties. By combining time-resolved reflectivity, first principles calculations and photo-emission experiments, we identify the structural degrees of freedom to play a fundamental role in the stabilization of charge order, indicating that ScV6Sn6 features an instance of charge order predominantly originating from phonons.
Topik & Kata Kunci
Penulis (25)
Manuel Tuniz
Armando Consiglio
Denny Puntel
Chiara Bigi
Stefan Enzner
Ganesh Pokharel
Pasquale Orgiani
Wibke Bronsch
Fulvio Parmigiani
Vincent Polewczyk
Phil D. C. King
Justin W. Wells
Ilija Zeljkovic
Pietro Carrara
Giorgio Rossi
Jun Fujii
Ivana Vobornik
Stephen D. Wilson
Ronny Thomale
Tim Wehling
Giorgio Sangiovanni
Giancarlo Panaccione
Federico Cilento
Domenico Di Sante
Federico Mazzola
Akses Cepat
- Tahun Terbit
- 2023
- Sumber Database
- DOAJ
- DOI
- 10.1038/s43246-023-00430-y
- Akses
- Open Access ✓