Pressure effect on the in-plane magnetic penetration depth in YBa_2Cu_4O_8

Abstract

We report a study of the pressure effect (PE) on the in-plane magnetic field penetration depth lambda_{ab} in YBa_2Cu_4O_8 by means of Meissner fraction measurements. A pronounced PE on lambda_{ab}^{-2}(0) was observed with a maximum relative shift of Δλ^{-2}_{ab}/λ^{-2}_{ab}= 44(3)% at a pressure of 10.2 kbar. It arises from the pressure dependence of the effective in-plane charge carrier mass and pressure induced charge carrier transfer from the CuO chains to the superconducting CuO_2 planes. The present results imply that the charge carriers in YBa_2Cu_4O_8 are coupled to the lattice.

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Cited by in corpus (6)

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• Anomalous electron-phonon coupling probed on the surface of ZrB${}_{12}$ superconductor
• Strong enhancement of conventional superconductivity near a quantum critical point of (Ca,Sr)_3Ir_4Sn_13
• Cooperative coupling of static magnetism and bulk superconductivity in the stripe phase of La_2-xBa_xCuO_4: Pressure- and doping-dependent studies
• Study of pressure effect on the magnetic penetration depth in MgB${}_2$
• Pressure effects on the superconducting properties of YBa_2Cu_4O_8