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Title: Robust block magnetism in the spin ladder compound BaFe 2 Se 3 under hydrostatic pressure

Abstract

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, BaFe 2X 3(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 BaFe 2Se 3 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 T N and greatly reduced moment above the pressure P s indicate potentially rich and competing phases close to the superconducting phase in this ladder system.

Authors:
ORCiD logo [1];  [2];  [1]; ORCiD logo [1]; ORCiD logo [3];  [3];  [4]; ORCiD logo [5];  [5]; ORCiD logo [1];  [2];  [6];  [1];  [1]
  1. Univ. of California, Berkeley, CA (United States)
  2. Sun Yat-Sen Univ., Guangzhou (China)
  3. Rutherford Appleton Lab., Oxon (United Kingdom)
  4. Harwell Science and Innovation Campus, Didcot, Oxfordshire (United Kingdom)
  5. Paul Scherrer Inst., Villigen (Switzerland)
  6. Brigham Young Univ., Provo, UT (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Science & Engineering Division; National Science Foundation (NSF) of Guangdong
OSTI Identifier:
1603564
Grant/Contract Number:  
[AC02-05CH11231; NSFC-19904414; 2018A030313055]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
[ Journal Volume: 100; Journal Issue: 21]; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
magnetism; structural properties; superconductivity; iron-based superconductors; muon spin relaxation & rotation; neutron diffraction; pressure effects; x-ray diffraction

Citation Formats

Wu, Shan, Yin, Junjie, Smart, Thomas, Acharya, Arani, Bull, Craig L., Funnell, Nicholas P., Forrest, Thomas R., Simutis, Gediminas, Khasanov, Rustem, Lewin, Sylvia K., Wang, Meng, Frandsen, Benjamin A., Jeanloz, Raymond, and Birgeneau, Robert J. Robust block magnetism in the spin ladder compound BaFe2Se3 under hydrostatic pressure. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.100.214511.
Wu, Shan, Yin, Junjie, Smart, Thomas, Acharya, Arani, Bull, Craig L., Funnell, Nicholas P., Forrest, Thomas R., Simutis, Gediminas, Khasanov, Rustem, Lewin, Sylvia K., Wang, Meng, Frandsen, Benjamin A., Jeanloz, Raymond, & Birgeneau, Robert J. Robust block magnetism in the spin ladder compound BaFe2Se3 under hydrostatic pressure. United States. doi:10.1103/PhysRevB.100.214511.
Wu, Shan, Yin, Junjie, Smart, Thomas, Acharya, Arani, Bull, Craig L., Funnell, Nicholas P., Forrest, Thomas R., Simutis, Gediminas, Khasanov, Rustem, Lewin, Sylvia K., Wang, Meng, Frandsen, Benjamin A., Jeanloz, Raymond, and Birgeneau, Robert J. Fri . "Robust block magnetism in the spin ladder compound BaFe2Se3 under hydrostatic pressure". United States. doi:10.1103/PhysRevB.100.214511.
@article{osti_1603564,
title = {Robust block magnetism in the spin ladder compound BaFe2Se3 under hydrostatic pressure},
author = {Wu, Shan and Yin, Junjie and Smart, Thomas and Acharya, Arani and Bull, Craig L. and Funnell, Nicholas P. and Forrest, Thomas R. and Simutis, Gediminas and Khasanov, Rustem and Lewin, Sylvia K. and Wang, Meng and Frandsen, Benjamin A. and Jeanloz, Raymond and Birgeneau, Robert J.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.100.214511},
journal = {Physical Review B},
number = [21],
volume = [100],
place = {United States},
year = {2019},
month = {12}
}

Journal Article:
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