Robust block magnetism in the spin ladder compound under hydrostatic pressure
Journal Article
·
· Physical Review B
- Univ. of California, Berkeley, CA (United States)
- Sun Yat-Sen Univ., Guangzhou (China)
- Rutherford Appleton Lab., Oxon (United Kingdom)
- Harwell Science and Innovation Campus, Didcot, Oxfordshire (United Kingdom)
- Paul Scherrer Inst., Villigen (Switzerland)
- Brigham Young Univ., Provo, UT (United States)
The majority of the iron-based superconductors (FeSCs) exhibit a two-dimensional square lattice structure. Recent reports of pressure-induced superconductivity in the spin-ladder system, BaFe2X3(X=S, Se), introduce a quasi-one-dimensional prototype and an insulating parent compound to the FeSCs. In this work, we report x-ray, neutron diffraction, and muon spin relaxation experiments on BaFe2Se3 under hydrostatic pressure to investigate its magnetic and structural properties across the pressure-temperature phase diagram. A structural phase transition was found at a pressure of 3.7(3) GPa. Neutron diffraction measurements at 6.8(3) GPa and 120 K show that the block magnetism persists even at these high pressures. A steady increase and then fast drop of the magnetic transition temperature TN and greatly reduced moment above the pressure Ps indicate potentially rich and competing phases close to the superconducting phase in this ladder system.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF) of Guangdong; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Science & Engineering Division
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1603564
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 21 Vol. 100; ISSN 2469-9950; ISSN PRBMDO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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