Title: Nanoscale inhomogeneity and the evolution of correlation strength in FeSe$$$$_{1-x}$$$$S$$$$_x$$$$

Journal Article · · Nano Convergence

Abstract We report a comprehensive study of the nanoscale inhomogeneity and disorder on the thermoelectric properties of FeSe $$$$_{1-x}$$$$ 1 - x S $$$$_x$$$$ x ( $$$$0 \le x \le 1$$$$ 0 x 1 ) single crystals and the evolution of correlation strength with S substitution. A hump-like feature in temperature-dependent thermpower is enhanced for x = 0.12 and 0.14 in the nematic region with increasing in orbital-selective electronic correlations, which is strongly suppressed across the nematic critical point and for higher S content. Nanoscale Se/S atom disorder in the tetrahedral surroundings of Fe atoms is confirmed by scanning transmission electron microscopy measurements, providing an insight into the nanostructural details and the evolution of correlation strength in FeSe $$$$_{1-x}$$$$ 1 - x S $$$$_x$$$$ x .

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
Grant/Contract Number:
SC0012704
OSTI ID:
2251530
Report Number(s):
BNL--225265-2024-JAAM; 59; PII: 405
Journal Information:
Nano Convergence, Journal Name: Nano Convergence Journal Issue: 1 Vol. 10; ISSN 2196-5404
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English

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