Correlation-driven electronic reconstruction in FeTe1–xSex
- Rice University, Houston, TX (United States)
- Renmin University of China, Beijing (China)
- National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States); University of Maryland, College Park, MD (United States); University of California, Berkeley, CA (United States)
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Rice University, Houston, TX (United States); University of California, Berkeley, CA (United States)
- University of Washington, Seattle, WA (United State
- Sun Yat-Sen University, Guangzhou (China)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
- University of British Columbia, Vancouver, BC (Canada); Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)
- Canadian Light Source (CLS), Saskatoon, SK (Canada)
- University of British Columbia, Vancouver, BC (Canada)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- University of Washington, Seattle, WA (United States)
- University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Electronic correlation is of fundamental importance to high temperature superconductivity. While the low energy electronic states in cuprates are dominantly affected by correlation effects across the phase diagram, observation of correlation-driven changes in fermiology amongst the iron-based superconductors remains rare. Here we present experimental evidence for a correlation-driven reconstruction of the Fermi surface tuned independently by two orthogonal axes of temperature and Se/Te ratio in the iron chalcogenide family FeTe1–xSex. We demonstrate that this reconstruction is driven by the de-hybridization of a strongly renormalized dxy orbital with the remaining itinerant iron 3d orbitals in the emergence of an orbital-selective Mott phase. Our observations are further supported by our theoretical calculations to be salient spectroscopic signatures of such a non-thermal evolution from a strongly correlated metallic phase into an orbital-selective Mott phase in dxy as Se concentration is reduced.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS); Rice Univ., Houston, TX (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Canada Foundation for Innovation (CFI); Natural Sciences and Engineering Research Council of Canada (NSERC); National Research Council (NRC); Canadian Institutes of Health Research (CIHR); Government of Saskatchewan; Robert A. Welch Foundation; Alfred P. Sloan Foundation; Gordon and Betty Moore Foundation; National Natural Science Foundation of China (NSFC); Ministry of Science and Technology of the People’s Republic of China (MOST); National Program on Key Research Project; USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); National Key Research and Development Program of China; Canada First Research Excellence Fund (CFREF)
- Grant/Contract Number:
- SC0012704; AC02-76SF00515; AC02-05CH11231; C-2024; GBMF9470; SC0021421; SC0012311; C-1839; SC0018197; C-1411; 11674392; 2016YFA0300504; 18XNLG24; 89233218CNA000001; 11904414; AC02-98CH10886
- OSTI ID:
- 1922015
- Alternate ID(s):
- OSTI ID: 1844568; OSTI ID: 1862011; OSTI ID: 1877037; OSTI ID: 1877048
- Report Number(s):
- LA-UR-20-27137; BNL-222721-2022-JAAM; TRN: US2312254
- Journal Information:
- Communications Physics, Vol. 5, Issue 1; ISSN 2399-3650
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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