Nematic fluctuations in an orbital selective superconductor Fe1+yTe1−xSex
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Fe1+yTe1−xSex is characterized by its complex magnetic phase diagram and highly orbital-dependent band renormalization. Despite this, the behavior of nematicity and nematic fluctuations, especially for high tellurium concentrations, remains largely unknown. Here we present a study of both B1g and B2g nematic fluctuations in Fe1+yTe1−xSex (0 ≤ x ≤ 0.53) using the technique of elastoresistivity measurement. We discovered that the nematic fluctuations in two symmetry channels are closely linked to the corresponding spin fluctuations, confirming the intertwined nature of these two degrees of freedom. We also revealed an unusual temperature dependence of the nematic susceptibility, which we attributed to a loss of coherence of the dxy orbital. Our results highlight the importance of orbital differentiation on the nematic properties of iron-based materials.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 39 |
| Tidsskrift | Communications Physics |
| Vol/bind | 6 |
| Udgave nummer | 1 |
| ISSN | 2399-3650 |
| DOI | |
| Status | Udgivet - dec. 2023 |
Bibliografisk note
Funding Information:
We thank Ming Yi for the fruitful discussion. The work at UW was supported by NSF MRSEC at UW (DMR-1719797). The material synthesis was supported by the Northwest Institute for Materials Physics, Chemistry, and Technology (NW IMPACT) and the Gordon and Betty Moore Foundation’s EPiQS Initiative, Grant GBMF6759 to J.-H.C. J.H.C. acknowledge the support of the David and Lucile Packard Foundation, the Alford P. Sloan Foundation and the State of Washington funded Clean Energy Institute. Theory work (M.H.C. and R.M.F.) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences, and Engineering Division, under Award No. DE-SC0020045. The Raman measurement is partially supported by the Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division (DE-SC0012509).
Publisher Copyright:
© 2023, The Author(s).
ID: 398067699