1. Putative Hall response of the strange metal component in FeSe1−xSx
- Author
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Shigeru Kasahara, Yu-Te Hsu, Nigel E. Hussey, Roemer Hinlopen, Takasada Shibauchi, Yuji Matsuda, Jake Ayres, Matija Čulo, and Maarten Berben
- Subjects
HFML - High Field Magnet Laboratory ,Physics ,Condensed matter physics ,Component (thermodynamics) ,Correlated Electron Systems ,02 engineering and technology ,Electron ,021001 nanoscience & nanotechnology ,01 natural sciences ,Metal ,Liquid crystal ,Quantum critical point ,visual_art ,0103 physical sciences ,visual_art.visual_art_medium ,010306 general physics ,0210 nano-technology ,strange metal ,Fermi liquid ,nematic quantum critical point ,FeSe1-xSx ,transverse magnetoresistance ,Hall effect ,lifetime separation - Abstract
Strange metals possess transport properties that are markedly different from those of a conventional Fermi liquid. Despite strong similarities in behavior exhibited by distinct families, a consistent description of strange metallic transport and, in particular, its evolution from low to high magnetic field strength H, is still lacking. The electron nematic FeSe1−xSx is one such strange metal displaying anomalous H/T scaling in its transverse magnetoresistance as well as a separation of transport and Hall lifetimes at low H beyond its (nematic) quantum critical point at xc ∼ 0.17. Here we report a study of the Hall response of FeSe1−xSx across xc in fields up to 33 T. Upon subtraction of a normal H-linear component from the total Hall response (imposed by perfect charge compensation), we find a second component, ascribable to strange metal physics, that grows as 1/T upon approach to the quantum critical point. Through this decomposition, we reveal that lifetime separation is indeed driven primarily by the presence of the strange metal component.
- Published
- 2021
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