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Title: Interrelationships between nematicity, antiferromagnetic spin fluctuations, and superconductivity: Role of hotspots in FeSe 1 - x S x revealed by high pressure Se 77 NMR study

Abstract

The sulfur-substituted FeSe, FeSe1-xSx, is one of the unique systems that provides an independent tunability of nematicity, antiferromagnetism, and superconductivity under pressure (p). Recently, Rana et al. [K. Rana et al., Phys. Rev. B 101, 180503(R) (2020)] reported, from 77Se nuclear magnetic resonance (NMR) measurements on FeSe0.91S0.09 under pressure, that there exists a clear role of nematicity in the relationship between antiferromagnetic (AFM) spin fluctuations and the superconducting transition temperature (Tc), where the AFM spin fluctuations are more effective in enhancing Tc in the absence of nematicity than with nematicity. Here, motivated by the work, we carried out 77Se NMR measurements on FeSe1-xSx with x=0.15 and 0.29 under pressure up to 2.10 GPa to investigate the relationship in a wide range of x in the FeSe1-xSx system. Based on the new results together with the previously reported data for x=0 [P. Wiecki et al., Phys. Rev. B 96, 180502(R) (2017)] and 0.09 [K. Rana et al. Phys. Rev. B 101, 180503(R) (2020)], we established a p–x–temperature (T) phase diagram exhibiting the evolution of AFM spin fluctuations. From the systematic analysis of the NMR data, we found that the superconducting (SC) state in a nematic state arises from a non-Fermi-liquid statemore » with strong stripe-type AFM spin fluctuations, while the SC state without nematicity comes from a Fermi-liquid state with mild stripe-type AFM spin fluctuations. Furthermore, we show that the previously reported impact of nematicity on the relationship between AFM fluctuations and superconductivity holds throughout the wide range of x from x=0 to 0.29 in FeSe1-xSx under pressure. We discuss the origin of the role of nematicity in terms of the different numbers of hotspots on Fermi surfaces with and without nematicity.« less

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1];  [2];  [1]; ORCiD logo [1]
  1. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States); Ruhr Univ., Bochum (Germany)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
OSTI Identifier:
1969555
Report Number(s):
IS-J-11,043
Journal ID: ISSN 2469-9950; TRN: US2313423
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B
Additional Journal Information:
Journal Volume: 107; Journal Issue: 13; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; nematic order; spin fluctuations; iron-based superconductors; nuclear magnetic resonance

Citation Formats

Rana, K., Ambika, D. V., Bud'ko, S. L., Böhmer, A. E., Canfield, P. C., and Furukawa, Y. Interrelationships between nematicity, antiferromagnetic spin fluctuations, and superconductivity: Role of hotspots in FeSe1-xSx revealed by high pressure Se77 NMR study. United States: N. p., 2023. Web. doi:10.1103/physrevb.107.134507.
Rana, K., Ambika, D. V., Bud'ko, S. L., Böhmer, A. E., Canfield, P. C., & Furukawa, Y. Interrelationships between nematicity, antiferromagnetic spin fluctuations, and superconductivity: Role of hotspots in FeSe1-xSx revealed by high pressure Se77 NMR study. United States. https://doi.org/10.1103/physrevb.107.134507
Rana, K., Ambika, D. V., Bud'ko, S. L., Böhmer, A. E., Canfield, P. C., and Furukawa, Y. Mon . "Interrelationships between nematicity, antiferromagnetic spin fluctuations, and superconductivity: Role of hotspots in FeSe1-xSx revealed by high pressure Se77 NMR study". United States. https://doi.org/10.1103/physrevb.107.134507. https://www.osti.gov/servlets/purl/1969555.
@article{osti_1969555,
title = {Interrelationships between nematicity, antiferromagnetic spin fluctuations, and superconductivity: Role of hotspots in FeSe1-xSx revealed by high pressure Se77 NMR study},
author = {Rana, K. and Ambika, D. V. and Bud'ko, S. L. and Böhmer, A. E. and Canfield, P. C. and Furukawa, Y.},
abstractNote = {The sulfur-substituted FeSe, FeSe1-xSx, is one of the unique systems that provides an independent tunability of nematicity, antiferromagnetism, and superconductivity under pressure (p). Recently, Rana et al. [K. Rana et al., Phys. Rev. B 101, 180503(R) (2020)] reported, from 77Se nuclear magnetic resonance (NMR) measurements on FeSe0.91S0.09 under pressure, that there exists a clear role of nematicity in the relationship between antiferromagnetic (AFM) spin fluctuations and the superconducting transition temperature (Tc), where the AFM spin fluctuations are more effective in enhancing Tc in the absence of nematicity than with nematicity. Here, motivated by the work, we carried out 77Se NMR measurements on FeSe1-xSx with x=0.15 and 0.29 under pressure up to 2.10 GPa to investigate the relationship in a wide range of x in the FeSe1-xSx system. Based on the new results together with the previously reported data for x=0 [P. Wiecki et al., Phys. Rev. B 96, 180502(R) (2017)] and 0.09 [K. Rana et al. Phys. Rev. B 101, 180503(R) (2020)], we established a p–x–temperature (T) phase diagram exhibiting the evolution of AFM spin fluctuations. From the systematic analysis of the NMR data, we found that the superconducting (SC) state in a nematic state arises from a non-Fermi-liquid state with strong stripe-type AFM spin fluctuations, while the SC state without nematicity comes from a Fermi-liquid state with mild stripe-type AFM spin fluctuations. Furthermore, we show that the previously reported impact of nematicity on the relationship between AFM fluctuations and superconductivity holds throughout the wide range of x from x=0 to 0.29 in FeSe1-xSx under pressure. We discuss the origin of the role of nematicity in terms of the different numbers of hotspots on Fermi surfaces with and without nematicity.},
doi = {10.1103/physrevb.107.134507},
journal = {Physical Review. B},
number = 13,
volume = 107,
place = {United States},
year = {Mon Apr 10 00:00:00 EDT 2023},
month = {Mon Apr 10 00:00:00 EDT 2023}
}

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