Thermal expansion and anisotropic pressure derivatives of T_c in Ba(Fe_{1-x}Co_x)_2As_2 single crystals

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dc.creatorBud'ko, S. L.
dc.creatorNi, N.
dc.creatorNandi, S.
dc.creatorSchmiedeshoff, G. M.
dc.creatorCanfield, P. C.
dc.date2009-01-13
dc.date.accessioned2026-07-07T12:28:59Z
dc.date.available2026-07-07T12:28:59Z
dc.descriptionHeat capacity and anisotropic thermal expansion was measured for Ba(Fe_{1-x}Co_x)_2As_2 (x = 0, 0.038, 0.074) single crystals. Thermal expansion is anisotropic and, in tetragonal phase, is significantly higher along the c-axis. Previously reported phase transitions, including possibly split structural and magnetic for x = 0.038 are clearly seen in both measurements. Uniaxial pressure derivatives of the superconducting transition temperature inferred from the Ehrenfest relation have opposite signs for in-plane and c-axis pressures for both Ba(Fe_{0.962}Co_{0.038})_2As_2 and Ba(Fe_{0.926}Co_{0.074})_2As_2, with the opposite sign of this anisotropy.
dc.identifierhttps://arxiv.org/abs/0901.1800
dc.identifierhttp://arxiv.org/abs/0901.1800
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215724
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleThermal expansion and anisotropic pressure derivatives of T_c in Ba(Fe_{1-x}Co_x)_2As_2 single crystals
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