J. Phys. Soc. Jpn. 91, 034706 (2022) [4 Pages]
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Penetration Depth and Coherence Length in the Superconductor β-PdBi2

Minoru Soda1,2, Nao Kagamida1, Emma Campillo3, Edward M. Forgan4, Elizabeth Blackburn3, Sebastian Mühlbauer5, Robert Cubitt6, Hermann Suderow7, Isabel Guillamón7, Edwin Herrera7, Hideki Yoshizawa2, and Hazuki Kawano-Furukawa1,2
+ Affiliations
1Department of Physics, Advanced Sciences, G.S.H.S. Ochanomizu University, Bunkyo, Tokyo 112-8610, Japan2RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan3Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden4School of Physics & Astronomy, University of Birmingham, B15 2TT, U.K.5Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, D-85748 Garching, Germany6Institut Laue Langevin, 71 Avenue des Martyrs, F-38000 Grenoble cedex 9, France7Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Instituto Nicolás Cabrera and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain
Received November 22, 2021; Accepted January 27, 2022; Published February 25, 2022

Small angle neutron scattering experiments have been carried out in the mixed state to determine the values and anisotropy of the penetration depth and coherence length in the superconductor β-PdBi2. The distortion of the vortex lattice observed on changing the magnetic field direction suggests that the a–c anisotropy of penetration depth in β-PdBi2 is small. With the magnetic field applied along the c-axis, we estimated the magnitudes of the penetration depth and coherence length by analyzing the magnetic field dependence of the neutron scattering intensity from the vortex lattice. The estimated superconductor parameters are consistent with the upper critical field obtained from the magnetization measurement.

©2022 The Physical Society of Japan
https://doi.org/10.7566/JPSJ.91.034706

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