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Title: Self-induced magnetic flux structure in the magnetic superconductor RbEuFe 4 As 4

Abstract

We report an unusual enhancement of the magnetic induction in single crystals of the magnetic superconductor RbEuFe 4As 4, highlighting the interplay between superconducting and magnetic subsystems in this material. Contrary to the conventional Meissner expulsion of magnetic flux below the superconducting transition temperature, we observe a substantial boost of the magnetic flux density upon approaching the magnetic transition temperature, T m. Direct imaging of the flux evolution with a magneto-optical technique, shows that the magnetic subsystem serves as an internal magnetic flux pump, drawing Abrikosov vortices from the surface, while the superconducting subsystem controls their conveyance into the bulk of the magnetic superconductor via a peculiar self-organized critical state.

Authors:
 [1];  [1];  [2];  [1];  [1];  [3];  [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Hofstra Univ., Heampstead, NY (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
OSTI Identifier:
1508383
Alternate Identifier(s):
OSTI ID: 1504803
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; Journal Issue: 13; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Vlasko-Vlasov, V. K., Koshelev, A. E., Smylie, M., Bao, J. -K., Chung, D. Y., Kanatzidis, M. G., Welp, U., and Kwok, W. -K. Self-induced magnetic flux structure in the magnetic superconductor RbEuFe4As4. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.134503.
Vlasko-Vlasov, V. K., Koshelev, A. E., Smylie, M., Bao, J. -K., Chung, D. Y., Kanatzidis, M. G., Welp, U., & Kwok, W. -K. Self-induced magnetic flux structure in the magnetic superconductor RbEuFe4As4. United States. doi:10.1103/PhysRevB.99.134503.
Vlasko-Vlasov, V. K., Koshelev, A. E., Smylie, M., Bao, J. -K., Chung, D. Y., Kanatzidis, M. G., Welp, U., and Kwok, W. -K. Wed . "Self-induced magnetic flux structure in the magnetic superconductor RbEuFe4As4". United States. doi:10.1103/PhysRevB.99.134503.
@article{osti_1508383,
title = {Self-induced magnetic flux structure in the magnetic superconductor RbEuFe4As4},
author = {Vlasko-Vlasov, V. K. and Koshelev, A. E. and Smylie, M. and Bao, J. -K. and Chung, D. Y. and Kanatzidis, M. G. and Welp, U. and Kwok, W. -K.},
abstractNote = {We report an unusual enhancement of the magnetic induction in single crystals of the magnetic superconductor RbEuFe4As4, highlighting the interplay between superconducting and magnetic subsystems in this material. Contrary to the conventional Meissner expulsion of magnetic flux below the superconducting transition temperature, we observe a substantial boost of the magnetic flux density upon approaching the magnetic transition temperature, Tm. Direct imaging of the flux evolution with a magneto-optical technique, shows that the magnetic subsystem serves as an internal magnetic flux pump, drawing Abrikosov vortices from the surface, while the superconducting subsystem controls their conveyance into the bulk of the magnetic superconductor via a peculiar self-organized critical state.},
doi = {10.1103/PhysRevB.99.134503},
journal = {Physical Review B},
number = 13,
volume = 99,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
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