Effective Vortex Pinning in MgB2 thin films
Y. Bugoslavsky, L. Cowey, T. J. Tate, G. K. Perkins, J. Moore, Z. Lockman, A. Berenov, J. L. MacManus-Driscoll, A. D. Caplin, L. F. Cohen, H Y Zhai, H M Christen, M P Paranthaman, D H Lowndes, M H Jo, M G Blamire
Abstract
We discuss pinning properties of MgB2 thin films grown by pulsed-laser deposition (PLD) and by electron-beam (EB) evaporation. Two mechanisms are identified that contribute most effectively to the pinning of vortices in randomly oriented films. The EB process produces low defected crystallites with small grain size providing enhanced pinning at grain boundaries without degradation of Tc. The PLD process produces films with structural disorder on a scale less that the coherence length that further improves pinning, but also depresses Tc.
Create a lesson
Related papers
Superconductivity in Pb2-xBixPd Single Crystals
S. Srivastava, R. P. Singh
Type-I superconductivity in a quasi-2D topologically nontrivial YbBi2
Karolina Górnicka, Sudip Malick, Joanna Bławat et al.
Generic thermodynamics of condensates with extremely small superfluid density ---Application to UTe2 and hidden second phase transition---
Kazushige Machida
Vortex-mediated spin current injection into two-dimensional superconductor NbSe2
Meng Yang, Xiaolong Yin, Jingjing Liu et al.
Superconductivity at the metal-insulator phase boundary in a bulk nickelate at ambient pressure
Hyo-Bin Ahn, Xinglong Chen, Hong Zheng et al.
Crystallographic imperfections and exotic superconductivity of UBe13
Andreas Leithe-Jasper, Markus König, Yusei Shimizu et al.