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Title: Strong ferromagnetic exchange interaction under ambient pressure in BaFe 2 S 3

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [6];  [8];  [9];  [10];  [2];  [11]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Sun Yat-Sen Univ., Guangzhou, (China). School of Physics
  2. Sun Yat-Sen Univ., Guangzhou, (China). School of Physics
  3. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  4. Rice Univ., Houston, TX (United States). Dept. of Physics and Astronomy
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  6. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
  7. Chinese Academy of Sciences (CAS), Beijing (China). Beijing Synchrotron Radiation Facility, Inst. of High Energy Physics
  8. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  9. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
  10. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
  11. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division; Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering

Inelastic neutron scattering measurements have been performed to investigate the spin waves of the quasi-one-dimensional antiferromagnetic ladder compound BaFe2S3, where a superconducting transition was observed under pressure [H. Takahashi et al., Nat. Mater. 14, 1008 (2015); T. Yamauchi et al., Phys. Rev. Lett. 115, 246402 (2015)]. By fitting the spherically averaged experimental data collected on a powder sample to a Heisenberg Hamiltonian, we find that the one-dimensional antiferromagnetic ladder exhibits a strong nearest-neighbor ferromagnetic exchange interaction (SJR=-71±4 meV) along the rung direction, an antiferromagnetic SJL=49±3 meV along the leg direction, and a ferromagnetic SJ2=-15±2 meV along the diagonal direction. Our data demonstrate that the antiferromagnetic spin excitations are a common characteristic for the iron-based superconductors, while specific relative values for the exchange interactions do not appear to be unique for the parent states of the superconducting materials.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; AC02-76SF00515; AC03-76SF008; AC05-00OR22725
OSTI ID:
1353167
Alternate ID(s):
OSTI ID: 1342610; OSTI ID: 1435341; OSTI ID: 1466700
Journal Information:
Physical Review B, Vol. 95, Issue 6; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (5)

Iron-Based Chalcogenide Spin Ladder BaFe2X3 (X = Se,S) journal November 2019
Spin dynamics of the block orbital-selective Mott phase journal September 2018
Exploration of high-pressure structural transition and electronic properties of BaFe 2 S 3 journal January 2019
Orbital order and fluctuations in the two-leg ladder materials BaFe 2 X 3 ( X = S and Se) and CsFe 2 Se 3 journal September 2017
Gradual enhancement of stripe-type antiferromagnetism in the spin-ladder material BaFe 2 S 3 under pressure journal November 2018