High pressure study of BaFe2As2 - role of hydrostaticity and uniaxial stress

Abstract

We investigate the evolution of the electrical resistivity of BaFe2As2 single crystals with pressure. The samples used were from the same batch grown from self flux and showed properties that were highly reproducible. Samples were pressurised using three different pressure media: pentane-isopentane (in a piston cylinder cell), Daphne oil (in an alumina anvil cell) and steatite (in a Bridgman cell). Each pressure medium has its own intrinsic level of hydrostaticity, which dramatically affects the phase diagram. An increasing uniaxial pressure component in this system quickly reduces spin density wave order and favours the appearance of superconductivity, similar to what is seen in SrFe2As2.

11 pages

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Cited by in corpus (32)

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• Extremely high sensitivity to uniaxial stress in pressure induced superconductivity of BaFe2As2
• Strain induced superconductivity in the parent compound BaFe2As2
• New Phase Induced by Pressure in the Iron-Arsenide Superconductor K-Ba122
• Co-substitution effects on the Fe-valence in the BaFe2As2 superconducting compound: A study of hard x-ray absorption spectroscopy
• Combined effects of pressure and Ru substitution on BaFe2As2
• Uniaxial versus hydrostatic pressure-induced phase transitions in CaFe2As2 and BaFe2As2
• Evidence for filamentary superconductivity nucleated at antiphase domain walls in antiferromagnetic CaFe${}_2$As${}_2$
• Pressure decoupled magnetic and structural transitions of the parent compound of iron based 122 superconductors BaFe2As2
• Pressure and chemical substitution effects in the local atomic structure of BaFe2As2
• Common effect of chemical and external pressures on the magnetic properties of RECoPO (RE = La, Pr)
• Probing local pressure environment in anvil cells with nitrogen vacancy (NV-) centers in diamond
• Resistivity and magnetoresistance of FeSe single crystals under Helium-gas pressure
• Study of the anisotropic magnetic order of the Eu sublattice in single crystals of EuFe_2-xCo_xAs_2 (x = 0, 0.2) by means of magnetization and magnetic torque
• Imaging anomalous nematic order and strain in optimally doped BaFe${}_2$(As,P)${}_2$
• Hydrostatic and uniaxial pressure dependence of superconducting transition temperature of KFe2As2 single crystals
• Expansion of the tetragonal magnetic phase with pressure in the iron-arsenide superconductor Ba{1-x}KxFe2As2
• Filamentary superconductivity across the phase diagram of Ba(Fe,Co)${}_2$As${}_2$
• Theoretical investigation of FeTe magnetic ordering under hydrostatic pressure
• Observation of Two Collapsed Phases in CaRbFe4As4
• Restoration of tetragonal $C_4$ symmetry coexistent with filamentary superconductivity in the pressure induced intermediate phase in the iron-based superconductor Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Compressibility and pressure-induced disorder in superconducting phase-separated Cs0.72Fe1.57Se2
• Electrodynamics of BaFe2As2 from infrared measurements under pressure
• Lifshitz Transitions in 122-Pnictides Under Pressure
• Hydrostatic pressure effects on the static magnetism in Eu(Fe${}_{0.925}$Co${}_{0.075}$)${}_2$As${}_2$
• Simultaneous collapse of antiferroquadrupolar order and superconductivity in PrIr${}_2$Zn${}_{20}$ by nonhydrostatic pressure
• Pressure induced superconductivity in a CeRhSi${}_3$ single crystal -- the high pressure study
• Uniaxial $c$-axis pressure effects on underdoped BaFe${}_2$(As${}_{0.72}$P${}_{0.28}$)${}_2$ superconductor
• High-Pressure Evolution of the Specific Heat of a Strongly Underdoped Ba(Fe0.963Co0.037)As2 Iron-Based Superconductor
• Common effect of chemical and external pressures on the magnetic properties of $R$CoPO ($R$ = La, Pr, Nd, Sm). II
• Combined effects of Sr substitution and pressure on the ground states in CaFe${}_2$As${}_2$
• c-axis pressure induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor