DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermoelectricity and electronic correlation enhancement in FeS by light Se doping

Journal Article · · Physical Review. B
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4]; ORCiD logo [3]; ORCiD logo [5]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); Chongqing Univ. (China)
  3. Univ. of Belgrade (Serbia). National Inst. of the Republic of Serbia, Vinca Inst. of Nuclear Sciences
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)

We report thermoelectric studies of FeS1–xSex (x = 0, 0.06) superconducting single crystals that feature high irreversibility fields and critical current density Jc comparable to materials with much higher superconducting critical temperatures (Tc's). The ratio of Tc to the Fermi temperature TF is very small, indicating weak electronic correlations. With a slight selenium substitution on sulfur site in FeS both Tc/TF and the effective mass m* rise considerably, implying increase in electronic correlation of the bulk conducting states. The first-principle calculations show rise of the density of states at the Fermi level in FeS0.94Se0.06 when compared to FeS, which is related not only to Fe but also to chalcogen-derived electronic states.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0012704
OSTI ID:
1846024
Report Number(s):
BNL-222769-2022-JAAM
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 4 Vol. 105; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (47)

High-field phase-diagram of Fe arsenide superconductors journal May 2009
Structure and property correlations in FeS journal March 2017
Relationship between crystal structure and superconductivity in iron-based superconductors journal April 2012
Iron-Based Layered Superconductor La[O 1- x F x ]FeAs ( x = 0.05−0.12) with T c = 26 K journal March 2008
Observation of Superconductivity in Tetragonal FeS journal August 2015
Spin excitations and the Fermi surface of superconducting FeS journal March 2017
Observation of two superconducting domes under pressure in tetragonal FeS journal September 2017
Structural transition and superconductivity in hydrothermally synthesized FeX (X = S, Se) journal January 2016
Vortex pinning and irreversibility fields in FeS 1– x Se x ( x = 0, 0.06) journal June 2017
Superconductivity in the PbO-type structure  -FeSe journal September 2008
Antiferromagnetic spin fluctuation and superconductivity journal July 2003
Thermoelectric properties of iron-based superconductors and parent compounds journal June 2016
On the thermoelectricity of correlated electrons in the zero-temperature limit journal July 2004
Pressure dependence of the thermoelectric power of the iron-based high- T c superconductor SmFeAsO 0.85 journal February 2009
Theoretical and experimental investigation of magnetotransport in iron chalcogenides journal October 2012
Transition Temperature of Strong-Coupled Superconductors journal March 1968
Correlated electronic structure, orbital-dependent correlations, and Lifshitz transition in tetragonal FeS journal December 2019
Thermopower across the phase diagram of the cuprate La 1.6 − x Nd 0.4 Sr x CuO 4 : Signatures of the pseudogap and charge density wave phases journal April 2021
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Josephson effects in d -wave superconductor junctions with magnetic interlayers journal February 2008
Electronic correlations in the superconductor La Fe As O 0.89 F 0.11 with low carrier density journal May 2008
Density functional study of FeS, FeSe, and FeTe: Electronic structure, magnetism, phonons, and superconductivity journal October 2008
Band renormalization and Fermi surface reconstruction in iron-based superconductors journal February 2009
Evidence of spin-density-wave order in R FeAsO 1 − x F x from measurements of thermoelectric power journal June 2009
Thermoelectric power and Hall coefficient measurements on Ba ( Fe 1 − x T x ) 2 As 2 ( T = Co and Cu) journal August 2009
Effective carrier type and field dependence of the reduced- T c superconducting state in SrFe 2 − x Ni x As 2 journal January 2010
Strong correlation and low carrier density in Fe 1 + y Te 0.6 Se 0.4 as seen from its thermoelectric response journal January 2011
Thermoelectric studies of K x Fe 2 − y Se 2 indicating a weakly correlated superconductor journal May 2011
Evolution of correlation strength in K x Fe 2 – y Se 2 superconductor doped with S journal August 2011
Coexistence of isotropic and extended s -wave order parameters in FeSe as revealed by low-temperature specific heat journal December 2011
Strong anisotropy in nearly ideal tetrahedral superconducting FeS single crystals journal March 2016
Electronic structure and d x 2 − y 2 -wave superconductivity in FeS journal March 2016
Nodal superconducting gap in tetragonal FeS journal March 2016
Coexistence of low-moment magnetism and superconductivity in tetragonal FeS and suppression of T c under pressure journal April 2016
Multiband superconductivity and large anisotropy in FeS crystals journal April 2016
Strong-coupling superconductivity revealed by scanning tunneling microscope in tetragonal FeS journal July 2016
Critical current density and vortex pinning in tetragonal FeS 1 − x Se x ( x = 0 , 0.06 ) journal September 2016
Upper critical field and quantum oscillations in tetragonal superconducting FeS journal September 2016
Nodal superconductivity in FeS: Evidence from quasiparticle heat transport journal September 2016
Electronic structure of FeS journal May 2017
Suppression of electronic correlations by chemical pressure from FeSe to FeS journal September 2017
Direct observation of in-plane anisotropy of the superconducting critical current density in Ba ( Fe 1 − x Co x ) 2 As 2 crystals journal January 2018
Supercurrent through Grain Boundaries of Cuprate Superconductors in the Presence of Strong Correlations journal March 2012
Thermoelectric power of YBa 2 Cu 3 O 7 − δ : Phonon drag and multiband conduction journal February 1991
Theory of Quasi-Universal Ratio of Seebeck Coefficient to Specific Heat in Zero-Temperature Limit in Correlated Metals journal January 2005
Superconductivity in Cerium- and Plutonium-Based `115' Materials journal May 2007
Superconducting Properties of a Stoichiometric FeSe Compound and Two Anomalous Features in the Normal State journal August 2011