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Title: Magnetic Precursor of the Pressure-Induced Superconductivity in Fe-Ladder Compounds

Abstract

We studied the pressure effects on the antiferromagentic orders in iron-based ladder compounds CsFe$$_2$$Se$$_3$$ and BaFe$$_2$$S$$_3$$ using single crytal neutron diffraction technique. With identical crystal structure and similar magnetic structures, the two compounds exhibit highly contrasting magnetic behaviors under moderate external pressures. In CsFe$$_2$$Se$$_3$$ the ladders are brought much closer to each other by pressure, but the stripe-type of magnetic order shows no observable change. Furthermore, the stripe order in BaFe$$_2$$S$$_3$$, undergoes a quantum phase transition where an abrupt increase of $$N\acute{e}el$$ temperature by more than 50$$\%$$ occurs at about 1 GPa, accompanied by a jump in ordered moment. Finally, with its spin structure unchanged, BaFe$$_2$$S$$_3$$ enters an enhanced magnetic phase that bears the characteristics of an orbital selective Mott phase, which is the true herald for superconductivity emerging at higher pressures.

Authors:
 [1];  [2];  [1];  [3];  [4];  [4];  [5]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  2. Univ. of Tokyo (Japan). Inst. for Solid State Physics (ISSP)
  3. Univ. of Tokyo (Japan). Inst. for Solid State Physics
  4. Tohoku Univ., Sendai (Japan). Dept. of Physics
  5. Tohoku Univ., Sendai (Japan). Dept. of Physics; Univ. of Tokyo (Japan). Inst. for Solid State Physics
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1327614
Alternate Identifier(s):
OSTI ID: 1267549
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 4; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Chi, Songxue, Uwatoko, Yoshiya, Cao, Huibo, Hirata, Yasuyuki, Hashizume, Kazuki, Aoyama, Takuya, and Ohgushi, Kenya. Magnetic Precursor of the Pressure-Induced Superconductivity in Fe-Ladder Compounds. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.047003.
Chi, Songxue, Uwatoko, Yoshiya, Cao, Huibo, Hirata, Yasuyuki, Hashizume, Kazuki, Aoyama, Takuya, & Ohgushi, Kenya. Magnetic Precursor of the Pressure-Induced Superconductivity in Fe-Ladder Compounds. United States. doi:10.1103/PhysRevLett.117.047003.
Chi, Songxue, Uwatoko, Yoshiya, Cao, Huibo, Hirata, Yasuyuki, Hashizume, Kazuki, Aoyama, Takuya, and Ohgushi, Kenya. Thu . "Magnetic Precursor of the Pressure-Induced Superconductivity in Fe-Ladder Compounds". United States. doi:10.1103/PhysRevLett.117.047003. https://www.osti.gov/servlets/purl/1327614.
@article{osti_1327614,
title = {Magnetic Precursor of the Pressure-Induced Superconductivity in Fe-Ladder Compounds},
author = {Chi, Songxue and Uwatoko, Yoshiya and Cao, Huibo and Hirata, Yasuyuki and Hashizume, Kazuki and Aoyama, Takuya and Ohgushi, Kenya},
abstractNote = {We studied the pressure effects on the antiferromagentic orders in iron-based ladder compounds CsFe$_2$Se$_3$ and BaFe$_2$S$_3$ using single crytal neutron diffraction technique. With identical crystal structure and similar magnetic structures, the two compounds exhibit highly contrasting magnetic behaviors under moderate external pressures. In CsFe$_2$Se$_3$ the ladders are brought much closer to each other by pressure, but the stripe-type of magnetic order shows no observable change. Furthermore, the stripe order in BaFe$_2$S$_3$, undergoes a quantum phase transition where an abrupt increase of $N\acute{e}el$ temperature by more than 50$\%$ occurs at about 1 GPa, accompanied by a jump in ordered moment. Finally, with its spin structure unchanged, BaFe$_2$S$_3$ enters an enhanced magnetic phase that bears the characteristics of an orbital selective Mott phase, which is the true herald for superconductivity emerging at higher pressures.},
doi = {10.1103/PhysRevLett.117.047003},
journal = {Physical Review Letters},
number = 4,
volume = 117,
place = {United States},
year = {2016},
month = {7}
}

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