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Title: Superconducting and magnetic phase diagram of RbEuFe 4 As 4 and CsEuFe 4 As 4 at high pressure

Abstract

The recently discovered (Rb,Cs)EuFe 4As 4 compounds exhibit an unusual combination of superconductivity ( T c~35K) and ferromagnetism ( T m~15K). We have performed a series of x-ray diffraction, ac magnetic susceptibility, dc magnetization, and electrical resistivity measurements on both RbEuFe 4As 4 and CsEuFe 4As 4 to pressures as high as ~30GPa. We find that the superconductivity onset is suppressed monotonically by pressure while the magnetic transition is enhanced at initial rates of dT m/dP~1.7K/GPa and 1.5K/GPa for RbEuFe 4As 4 and CsEuFe 4As 4, respectively. Near 7 GPa, T c onset and T m become comparable. At higher pressures, signatures of bulk superconductivity gradually disappear. Room-temperature x-ray diffraction measurements suggest the onset of a transition from tetragonal (T) to a half-collapsed-tetragonal (hcT) phase at ~10GPa (RbEuFe 4As 4) and ~12GPa (CsEuFe 4As 4). In conclusion, the ability to tune T c and T m into coincidence with relatively modest pressures highlights (Rb,Cs)EuFe 4As 4 compounds as ideal systems to study the interplay of superconductivity and ferromagnetism.

Authors:
 [1];  [1];  [2];  [3];  [4];  [5];  [5];  [6];  [7];  [1]
  1. Univ. of Florida, Gainesville, FL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
  3. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. Zhejiang Univ., Hangzhou (China)
  6. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  7. Univ. of Alabama at Birmingham, Birmingham, AL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA); German Research Foundation (DFG); National Natural Science Foundation of China (NNSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1471592
Alternate Identifier(s):
OSTI ID: 1461595
Grant/Contract Number:  
AC02-06CH11357; NA0002928; AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 1; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Jackson, Daniel E., VanGennep, Derrick, Bi, Wenli, Zhang, Dongzhou, Materne, Philipp, Liu, Yi, Cao, Guang -Han, Weir, Samuel T., Vohra, Yogesh K., and Hamlin, James J.. Superconducting and magnetic phase diagram of RbEuFe4As4 and CsEuFe4As4 at high pressure. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.98.014518.
Jackson, Daniel E., VanGennep, Derrick, Bi, Wenli, Zhang, Dongzhou, Materne, Philipp, Liu, Yi, Cao, Guang -Han, Weir, Samuel T., Vohra, Yogesh K., & Hamlin, James J.. Superconducting and magnetic phase diagram of RbEuFe4As4 and CsEuFe4As4 at high pressure. United States. doi:10.1103/PhysRevB.98.014518.
Jackson, Daniel E., VanGennep, Derrick, Bi, Wenli, Zhang, Dongzhou, Materne, Philipp, Liu, Yi, Cao, Guang -Han, Weir, Samuel T., Vohra, Yogesh K., and Hamlin, James J.. Wed . "Superconducting and magnetic phase diagram of RbEuFe4As4 and CsEuFe4As4 at high pressure". United States. doi:10.1103/PhysRevB.98.014518.
@article{osti_1471592,
title = {Superconducting and magnetic phase diagram of RbEuFe4As4 and CsEuFe4As4 at high pressure},
author = {Jackson, Daniel E. and VanGennep, Derrick and Bi, Wenli and Zhang, Dongzhou and Materne, Philipp and Liu, Yi and Cao, Guang -Han and Weir, Samuel T. and Vohra, Yogesh K. and Hamlin, James J.},
abstractNote = {The recently discovered (Rb,Cs)EuFe4As4 compounds exhibit an unusual combination of superconductivity (Tc~35K) and ferromagnetism (Tm~15K). We have performed a series of x-ray diffraction, ac magnetic susceptibility, dc magnetization, and electrical resistivity measurements on both RbEuFe4As4 and CsEuFe4As4 to pressures as high as ~30GPa. We find that the superconductivity onset is suppressed monotonically by pressure while the magnetic transition is enhanced at initial rates of dTm/dP~1.7K/GPa and 1.5K/GPa for RbEuFe4As4 and CsEuFe4As4, respectively. Near 7 GPa, Tc onset and Tm become comparable. At higher pressures, signatures of bulk superconductivity gradually disappear. Room-temperature x-ray diffraction measurements suggest the onset of a transition from tetragonal (T) to a half-collapsed-tetragonal (hcT) phase at ~10GPa (RbEuFe4As4) and ~12GPa (CsEuFe4As4). In conclusion, the ability to tune Tc and Tm into coincidence with relatively modest pressures highlights (Rb,Cs)EuFe4As4 compounds as ideal systems to study the interplay of superconductivity and ferromagnetism.},
doi = {10.1103/PhysRevB.98.014518},
journal = {Physical Review B},
number = 1,
volume = 98,
place = {United States},
year = {Wed Jul 25 00:00:00 EDT 2018},
month = {Wed Jul 25 00:00:00 EDT 2018}
}

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Works referenced in this record:

Finite strain isotherm and velocities for single-crystal and polycrystalline NaCl at high pressures and 300°K
journal, January 1978


High pressure–high temperature equations of state of neon and diamond
journal, March 2008

  • Dewaele, Agnès; Datchi, Frédéric; Loubeyre, Paul
  • Physical Review B, Vol. 77, Issue 9, Article No. 094106
  • DOI: 10.1103/PhysRevB.77.094106

Hydrostatic limits of 11 pressure transmitting media
journal, March 2009

  • Klotz, S.; Chervin, J-C.; Munsch, P.
  • Journal of Physics D: Applied Physics, Vol. 42, Issue 7, Article No. 075413
  • DOI: 10.1088/0022-3727/42/7/075413