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Title: Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields [Novel Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields]

Abstract

Nonlinear electrical transport studies at high pulsed magnetic fields, above the range accessible by dc magnets, are of direct fundamental relevance to the physics of superconductors, domain-wall, charge-density waves, and topological semimetal. All-superconducting very high field magnets also make it technologically relevant to study vortex matter in this regime. However, pulsed magnetic fields reaching 100 T in milliseconds impose technical and fundamental challenges that have prevented the realization of these studies. Here, we present a technique for sub-microsecond smart current-voltage measurements, which enables the determination of the superconducting critical current in pulsed magnetic fields, beyond the reach of any dc magnet. We demonstrate the excellent agreement of this technique with low dc field measurements on Y0.77Gd0.23Ba2Cu3O7 coated conductors with and without BaHfO3 nanoparticles. Exploring the uncharted high-magnetic-field region, we discover a characteristic influence of the magnetic field rate of change (dH/dt) on the current-voltage curves in a superconductor. As a result, we fully capture this unexplored vortex physics through a theoretical model based on the asymmetry of the vortex-velocity profile produced by the applied current.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Seikei Univ., Tokyo (Japan)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1514986
Alternate Identifier(s):
OSTI ID: 1510372
Report Number(s):
LA-UR-19-21053
Journal ID: ISSN 2331-7019; PRAHB2
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Applied
Additional Journal Information:
Journal Volume: 11; Journal Issue: 5; Journal ID: ISSN 2331-7019
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; High Magnetic Field Science; Material Science; superconductors, critical current , high fields; superconductors; critical current; high fields; vortex

Citation Formats

Leroux, Maxime, Balakirev, Fedor F., Miura, Masashi, Agatsuma, Kouki, Civale, Leonardo, and Maiorov, Boris Alfredo. Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields [Novel Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields]. United States: N. p., 2019. Web. doi:10.1103/PhysRevApplied.11.054005.
Leroux, Maxime, Balakirev, Fedor F., Miura, Masashi, Agatsuma, Kouki, Civale, Leonardo, & Maiorov, Boris Alfredo. Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields [Novel Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields]. United States. https://doi.org/10.1103/PhysRevApplied.11.054005
Leroux, Maxime, Balakirev, Fedor F., Miura, Masashi, Agatsuma, Kouki, Civale, Leonardo, and Maiorov, Boris Alfredo. Thu . "Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields [Novel Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields]". United States. https://doi.org/10.1103/PhysRevApplied.11.054005. https://www.osti.gov/servlets/purl/1514986.
@article{osti_1514986,
title = {Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields [Novel Dynamics and Critical Currents in Fast Superconducting Vortices at High pulsed Magnetic Fields]},
author = {Leroux, Maxime and Balakirev, Fedor F. and Miura, Masashi and Agatsuma, Kouki and Civale, Leonardo and Maiorov, Boris Alfredo},
abstractNote = {Nonlinear electrical transport studies at high pulsed magnetic fields, above the range accessible by dc magnets, are of direct fundamental relevance to the physics of superconductors, domain-wall, charge-density waves, and topological semimetal. All-superconducting very high field magnets also make it technologically relevant to study vortex matter in this regime. However, pulsed magnetic fields reaching 100 T in milliseconds impose technical and fundamental challenges that have prevented the realization of these studies. Here, we present a technique for sub-microsecond smart current-voltage measurements, which enables the determination of the superconducting critical current in pulsed magnetic fields, beyond the reach of any dc magnet. We demonstrate the excellent agreement of this technique with low dc field measurements on Y0.77Gd0.23Ba2Cu3O7 coated conductors with and without BaHfO3 nanoparticles. Exploring the uncharted high-magnetic-field region, we discover a characteristic influence of the magnetic field rate of change (dH/dt) on the current-voltage curves in a superconductor. As a result, we fully capture this unexplored vortex physics through a theoretical model based on the asymmetry of the vortex-velocity profile produced by the applied current.},
doi = {10.1103/PhysRevApplied.11.054005},
journal = {Physical Review Applied},
number = 5,
volume = 11,
place = {United States},
year = {Thu May 02 00:00:00 EDT 2019},
month = {Thu May 02 00:00:00 EDT 2019}
}

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