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Title: Bandwidth controlled insulator-metal transition in BaFe 2 S 3 : A Mössbauer study under pressure

Journal Article · · Physical Review B
 [1];  [2];  [1];  [1];  [3];  [3];  [3];  [4];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Geology
  3. Leibniz Inst. for Solid State and Materials Research (IFW), Dresden (Germany)
  4. Leibniz Inst. for Solid State and Materials Research (IFW), Dresden (Germany); Dresden Univ. of Technology (Germany). Inst. of Solid State and Materials Physics

BaFe2S3 is a quasi one-dimensional Mott insulator that orders antiferromagnetically below 125 K. The application of pressure induces a transition to a metallic state, and superconductivity emerges.The evolution of the magnetic behavior on increasing pressure has up to now been either studied indirectly by means of transport measurements, or by using local magnetic probes only in the low pressure region. Here, we investigate the magnetic properties of BaFe2S3 up to 9.9GPa by means of synchrotron 57Fe Mossbauer spectroscopy experiments, providing the First local magnetic phase diagram. The magnetic ordering temperature increases up to 185(5) K at 7.5GPa, and is fully suppressed at 9.9GPa. The low-temperature magnetic hyperne field is continuously reduced from 12.9 to 10.3T between 1.4 and 9.1GPa, followed by a sudden drop to zero at 9.9GPa indicating a First-order phase transition. The pressure dependence of the magnetic order in BaFe2S3 can be qualitatively explained by a combination of a bandwidth-controlled insulator-metal transition as well as a pressure enhanced exchange interaction between Fe-atoms and Fe 3d-S 3p hybridization.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
German Research Foundation (DFG); National Science Foundation (NSF); USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1493029
Alternate ID(s):
OSTI ID: 1491936
Journal Information:
Physical Review B, Vol. 99, Issue 2; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (1)

Iron-Based Chalcogenide Spin Ladder BaFe2X3 (X = Se,S) journal November 2019