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Title: Kink walls and critical behavior of magnetization near the lock-in transition in layered superconductors

Abstract

We consider the behavior of a layered superconductor in a magnetic field applied at very small angles with respect to the layers. The penetration of the field component perpendicular to the layers occurs as a result of the phase transition (lock-in transition). The boundary of the locked phase is calculated exactly. We argue that the penetration of the transversal field occurs by the formation of separated kink walls. The structure of field in the wall and the behavior of magnetization depend essentially upon the value of the field along layers [ital B][sub [ital x]]. At small [ital B][sub [ital x]] a kink wall is composed of separated magnetic flux tubes. Each tube contains flux that depends upon [ital B][sub [ital x]] and smaller than a flux quantum. At large [ital B][sub [ital x]] these tubes overlap and form a magnetic flux wall. The behavior of the magnetization near the transition is studied in detail. At large separations between kink walls they interact exponentially and their concentration sharply increases in the narrow region above the lock-in field. This leads to the appearance of a tiny peak in the field dependence of the magnetization, which can be used to indicate the lock-inmore » transition.« less

Authors:
 [1]
  1. Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9506, 2300 RA Leiden (Netherlands)
Publication Date:
OSTI Identifier:
6367001
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (United States)
Additional Journal Information:
Journal Volume: 48:2; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; TYPE-II SUPERCONDUCTORS; MAGNETIZATION; JOSEPHSON JUNCTIONS; LAYERS; MAGNETIC FLUX; PENETRATION DEPTH; PHASE TRANSFORMATIONS; JUNCTIONS; SUPERCONDUCTING JUNCTIONS; SUPERCONDUCTORS; 665411* - Basic Superconductivity Studies- (1992-)

Citation Formats

Koshelev, A E. Kink walls and critical behavior of magnetization near the lock-in transition in layered superconductors. United States: N. p., 1993. Web. doi:10.1103/PhysRevB.48.1180.
Koshelev, A E. Kink walls and critical behavior of magnetization near the lock-in transition in layered superconductors. United States. https://doi.org/10.1103/PhysRevB.48.1180
Koshelev, A E. Thu . "Kink walls and critical behavior of magnetization near the lock-in transition in layered superconductors". United States. https://doi.org/10.1103/PhysRevB.48.1180.
@article{osti_6367001,
title = {Kink walls and critical behavior of magnetization near the lock-in transition in layered superconductors},
author = {Koshelev, A E},
abstractNote = {We consider the behavior of a layered superconductor in a magnetic field applied at very small angles with respect to the layers. The penetration of the field component perpendicular to the layers occurs as a result of the phase transition (lock-in transition). The boundary of the locked phase is calculated exactly. We argue that the penetration of the transversal field occurs by the formation of separated kink walls. The structure of field in the wall and the behavior of magnetization depend essentially upon the value of the field along layers [ital B][sub [ital x]]. At small [ital B][sub [ital x]] a kink wall is composed of separated magnetic flux tubes. Each tube contains flux that depends upon [ital B][sub [ital x]] and smaller than a flux quantum. At large [ital B][sub [ital x]] these tubes overlap and form a magnetic flux wall. The behavior of the magnetization near the transition is studied in detail. At large separations between kink walls they interact exponentially and their concentration sharply increases in the narrow region above the lock-in field. This leads to the appearance of a tiny peak in the field dependence of the magnetization, which can be used to indicate the lock-in transition.},
doi = {10.1103/PhysRevB.48.1180},
url = {https://www.osti.gov/biblio/6367001}, journal = {Physical Review, B: Condensed Matter; (United States)},
issn = {0163-1829},
number = ,
volume = 48:2,
place = {United States},
year = {1993},
month = {7}
}