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Title: Scanning Hall Probe Imaging of ErNi2B2C

Abstract

We report scanning Hall probe imaging of ErNi{sub 2}B{sub 2}C in the superconducting, antiferromagnetic, and weakly ferromagnetic regimes in magnetic fields up to 20 Oe, well below H{sub c1}, with two results. First, imaging isolated vortices shows that they spontaneously rearrange on cooling through the antiferromagnetic transition temperature T{sub N} = 6 K to pin on twin boundaries, forming a striped pattern. Second, a weak, random magnetic signal appears in the ferromagnetic phase below T{sub WFM} = 2.3 K, and no spontaneous vortex lattice is present down to 1.9 K. We conclude that ferromagnetism coexists with superconductivity either by forming small ferromagnetic domains or with oscillatory variation of the magnetization on sub-penetration depth length scales.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
877526
Report Number(s):
SLAC-PUB-11576
TRN: US200608%%65
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FERROMAGNETISM; PROBES; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; ERBIUM CARBIDES; NICKEL CARBIDES; ERBIUM BORIDES; NICKEL BORIDES; HALL EFFECT; Other,MATSCI

Citation Formats

Bluhm, Hendrik, Sebastian, Suchitra, Guikema, Janice W., Fisher, I.R., Moler, Kathryn A., and /Stanford U., Appl. Phys. Dept.. Scanning Hall Probe Imaging of ErNi2B2C. United States: N. p., 2005. Web.
Bluhm, Hendrik, Sebastian, Suchitra, Guikema, Janice W., Fisher, I.R., Moler, Kathryn A., & /Stanford U., Appl. Phys. Dept.. Scanning Hall Probe Imaging of ErNi2B2C. United States.
Bluhm, Hendrik, Sebastian, Suchitra, Guikema, Janice W., Fisher, I.R., Moler, Kathryn A., and /Stanford U., Appl. Phys. Dept.. Fri . "Scanning Hall Probe Imaging of ErNi2B2C". United States. doi:. https://www.osti.gov/servlets/purl/877526.
@article{osti_877526,
title = {Scanning Hall Probe Imaging of ErNi2B2C},
author = {Bluhm, Hendrik and Sebastian, Suchitra and Guikema, Janice W. and Fisher, I.R. and Moler, Kathryn A. and /Stanford U., Appl. Phys. Dept.},
abstractNote = {We report scanning Hall probe imaging of ErNi{sub 2}B{sub 2}C in the superconducting, antiferromagnetic, and weakly ferromagnetic regimes in magnetic fields up to 20 Oe, well below H{sub c1}, with two results. First, imaging isolated vortices shows that they spontaneously rearrange on cooling through the antiferromagnetic transition temperature T{sub N} = 6 K to pin on twin boundaries, forming a striped pattern. Second, a weak, random magnetic signal appears in the ferromagnetic phase below T{sub WFM} = 2.3 K, and no spontaneous vortex lattice is present down to 1.9 K. We conclude that ferromagnetism coexists with superconductivity either by forming small ferromagnetic domains or with oscillatory variation of the magnetization on sub-penetration depth length scales.},
doi = {},
journal = {Physical Review B},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 02 00:00:00 EST 2005},
month = {Fri Dec 02 00:00:00 EST 2005}
}