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Title: Expansion of the tetragonal magnetic phase with pressure in the iron arsenide superconductor Ba 1 - x K x Fe 2 As 2

Abstract

In the temperature-concentration phase diagram of most iron-based superconductors, antiferromagnetic order is gradually suppressed to zero at a critical point, and a dome of superconductivity forms around that point. The nature of the magnetic phase and its fluctuations is of fundamental importance for elucidating the pairing mechanism. In Ba 1–xK xFe 2As 2 and Ba 1–xNa xFe 2As 2, it has recently become clear that the usual stripelike magnetic phase, of orthorhombic symmetry, gives way to a second magnetic phase, of tetragonal symmetry, near the critical point, in the range from x = 0.24 to x = 0.28 for Ba 1–xK xFe 2As 2. In a prior study, an unidentified phase was discovered for x < 0.24 but under applied pressure, whose onset was detected as a sharp anomaly in the resistivity. Here we report measurements of the electrical resistivity of Ba 1–xK xFe 2As 2 under applied hydrostatic pressures up to 2.75 GPa, for x = 0.22, 0.24, and 0.28. The critical pressure above which the unidentified phase appears is seen to decrease with increasing x and vanish at x = 0.24, thereby linking the pressure-induced phase to the tetragonal magnetic phase observed at ambient pressure. In the temperature-concentrationmore » phase diagram of Ba 1–xK xFe 2As 2, we find that pressure greatly expands the tetragonal magnetic phase, while the stripelike phase shrinks. As a result, this reveals that pressure may be a powerful tuning parameter with which to explore the interplay between magnetism and superconductivity in this material.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [4];  [5];  [1];  [6]
  1. Univ. de Sherbrooke, Sherbrooke, QC (Canada)
  2. Ames Lab., Ames, IA (United States)
  3. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
  4. Nanjing Univ., Nanjing (China)
  5. Nanjing Univ., Nanjing (China); Canadian Institute for Advanced Research, Toronto, ON (Canada)
  6. Univ. de Sherbrooke, Sherbrooke, QC (Canada); Canadian Institute for Advanced Research, Toronto, ON (Canada)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1337668
Alternate Identifier(s):
OSTI ID: 1245047
Report Number(s):
IS-J-8986
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC02-07CH11358; 2011CBA00100
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 14; 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

Hassinger, Elena, Gredat, G., Valade, F., de Cotret, S. Rene, Cyr-Choiniere, O., Juneau-Fecteau, A., Reid, J. -Ph., Kim, H., Tanatar, M. A., Prozorov, R., Shen, B., Wen, H. -H., Doiron-Leyraud, N., and Taillefer, Louis. Expansion of the tetragonal magnetic phase with pressure in the iron arsenide superconductor Ba1-xKxFe2As2. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.144401.
Hassinger, Elena, Gredat, G., Valade, F., de Cotret, S. Rene, Cyr-Choiniere, O., Juneau-Fecteau, A., Reid, J. -Ph., Kim, H., Tanatar, M. A., Prozorov, R., Shen, B., Wen, H. -H., Doiron-Leyraud, N., & Taillefer, Louis. Expansion of the tetragonal magnetic phase with pressure in the iron arsenide superconductor Ba1-xKxFe2As2. United States. https://doi.org/10.1103/PhysRevB.93.144401
Hassinger, Elena, Gredat, G., Valade, F., de Cotret, S. Rene, Cyr-Choiniere, O., Juneau-Fecteau, A., Reid, J. -Ph., Kim, H., Tanatar, M. A., Prozorov, R., Shen, B., Wen, H. -H., Doiron-Leyraud, N., and Taillefer, Louis. Fri . "Expansion of the tetragonal magnetic phase with pressure in the iron arsenide superconductor Ba1-xKxFe2As2". United States. https://doi.org/10.1103/PhysRevB.93.144401. https://www.osti.gov/servlets/purl/1337668.
@article{osti_1337668,
title = {Expansion of the tetragonal magnetic phase with pressure in the iron arsenide superconductor Ba1-xKxFe2As2},
author = {Hassinger, Elena and Gredat, G. and Valade, F. and de Cotret, S. Rene and Cyr-Choiniere, O. and Juneau-Fecteau, A. and Reid, J. -Ph. and Kim, H. and Tanatar, M. A. and Prozorov, R. and Shen, B. and Wen, H. -H. and Doiron-Leyraud, N. and Taillefer, Louis},
abstractNote = {In the temperature-concentration phase diagram of most iron-based superconductors, antiferromagnetic order is gradually suppressed to zero at a critical point, and a dome of superconductivity forms around that point. The nature of the magnetic phase and its fluctuations is of fundamental importance for elucidating the pairing mechanism. In Ba1–xKxFe2As2 and Ba1–xNaxFe2As2, it has recently become clear that the usual stripelike magnetic phase, of orthorhombic symmetry, gives way to a second magnetic phase, of tetragonal symmetry, near the critical point, in the range from x = 0.24 to x = 0.28 for Ba1–xKxFe2As2. In a prior study, an unidentified phase was discovered for x < 0.24 but under applied pressure, whose onset was detected as a sharp anomaly in the resistivity. Here we report measurements of the electrical resistivity of Ba1–xKxFe2As2 under applied hydrostatic pressures up to 2.75 GPa, for x = 0.22, 0.24, and 0.28. The critical pressure above which the unidentified phase appears is seen to decrease with increasing x and vanish at x = 0.24, thereby linking the pressure-induced phase to the tetragonal magnetic phase observed at ambient pressure. In the temperature-concentration phase diagram of Ba1–xKxFe2As2, we find that pressure greatly expands the tetragonal magnetic phase, while the stripelike phase shrinks. As a result, this reveals that pressure may be a powerful tuning parameter with which to explore the interplay between magnetism and superconductivity in this material.},
doi = {10.1103/PhysRevB.93.144401},
url = {https://www.osti.gov/biblio/1337668}, journal = {Physical Review B},
issn = {2469-9950},
number = 14,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

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Cited by: 5 works
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Works referenced in this record:

FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe 2 As 2
journal, August 2010


Phase diagram of Ba 1 x K x Fe 2 As 2
journal, May 2012


Magnetically driven suppression of nematic order in an iron-based superconductor
journal, May 2014


Spin reorientation in Ba 0.65 Na 0.35 Fe 2 As 2 studied by single-crystal neutron diffraction
journal, February 2015


Superconductivity-induced re-entrance of the orthorhombic distortion in Ba1−xKxFe2As2
journal, July 2015


Tetragonal magnetic phase in Ba 1 x K x Fe 2 As 2 from x-ray and neutron diffraction
journal, September 2015


Competing Orders in FeAs Layers
journal, October 2008


Magnetic degeneracy and hidden metallicity of the spin-density-wave state in ferropnictides
journal, January 2010


Properties of a diagonal two-orbital ladder model of the iron pnictide superconductors
journal, May 2010


Proximity of iron pnictide superconductors to a quantum tricritical point
journal, July 2011


Microscopically derived Ginzburg-Landau theory for magnetic order in the iron pnictides
journal, December 2011


Interplay between tetragonal magnetic order, stripe magnetism, and superconductivity in iron-based materials
journal, March 2015


Magnetic order without tetragonal-symmetry-breaking in iron arsenides: Microscopic mechanism and spin-wave spectrum
journal, January 2015


Growth and characterization of A 1− x K x Fe 2 As 2 (A = Ba, Sr) single crystals with x = 0–0.4
journal, October 2008


Interplane resistivity of underdoped single crystals (Ba 1 x K x )Fe 2 As 2 ( 0 x < 0.34 )
journal, April 2014


Nonmagnetic piston–cylinder pressure cell for use at 35 kbar and above
journal, August 1999


High pressure study of BaFe 2 As 2 —the role of hydrostaticity and uniaxial stress
journal, January 2010


    Works referencing / citing this record:

    Preferred Magnetic Excitations in the Iron-Based Sr 1 x Na x Fe 2 As 2 Superconductor
    journal, January 2019


    Hedgehog spin-vortex crystal stabilized in a hole-doped iron-based superconductor
    journal, February 2018


    Intertwined spin-orbital coupled orders in the iron-based superconductors
    journal, July 2019


    Distinct pressure evolution of coupled nematic and magnetic orders in FeSe
    journal, August 2019


    Strain tuning and anisotropic spin correlations in iron-based systems
    journal, August 2019


    Pressure-temperature phase diagrams of CaK ( Fe 1 x Ni x ) 4 As 4 superconductors
    journal, May 2018


    Emergent Magnetic Degeneracy in Iron Pnictides due to the Interplay between Spin-Orbit Coupling and Quantum Fluctuations
    journal, July 2018