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Title: Spatially resolved penetration depth measurements and vortex manipulation in the ferromagnetic superconductor ErNi 2 B 2 C

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [1];  [1]
  1. Institute for Basic Science, Pohang (Korea); Pohang Univ. of Science and Technology, Pohang (Korea)
  2. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)

We present a local probe study of the magnetic superconductor ErNi2B2C, using magnetic force microscopy at sub-Kelvin temperatures. ErNi2B2C is an ideal system to explore the effects of concomitant superconductivity and ferromagnetism. At 500 mK, far below the transition to a weakly ferromagnetic state, we directly observe a structured magnetic background on the micrometer scale. We determine spatially resolved absolute values of the magnetic penetration depth λ and study its temperature dependence as the system undergoes magnetic phase transitions from paramagnetic to antiferromagnetic, and to weak ferromagnetic, all within the superconducting regime. We estimate the absolute pinning force of Abrikosov vortices, which shows a position dependence and temperature dependence as well, and discuss the possibility of the purported spontaneous vortex formation.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1221930
Alternate ID(s):
OSTI ID: 1206812
Report Number(s):
IS-J-8771; PRBMDO
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 1; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

References (30)

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A common thread: The pairing interaction for unconventional superconductors journal October 2012
Relation between cuprate superconductivity and magnetism: A Raman study of ( CaLa ) 1 ( BaLa ) 2 Cu 3 O y journal September 2014
Vortices in high-temperature superconductors journal October 1994
An investigation of the Boron isotope effect in Ni and Pd based boride carbide superconductors journal December 1994
Boron isotope effect in single-crystal YNi2B2C and LuNi2B2C superconductors journal January 1999
Magnetism and superconductivity in single-crystal ErNi 2 B 2 C journal August 1995
Possible co-existence of superconductivity and weak ferromagnetism in ErNi2B2C journal May 1996
Scanning Hall probe imaging of ErNi 2 B 2 C journal January 2006
Observation of the spontaneous vortex phase in the weakly ferromagnetic superconductor ErNi 2 B 2 C: A penetration depth study journal March 2006
Domain structure in ErNi 2 B 2 C and HoNi 2 B 2 C single crystals observed by a high-resolution Bitter decoration technique journal June 2005
High-temperature solution growth of intermetallic single crystals and quasicrystals journal May 2001
New Perspectives for Cuprate Research: (Ca x La1−x )(Ba1.75−x La0.25+x )Cu3O y Single Crystals journal June 2012
Magnetoelastic tetragonal-to-orthorhombic distortion in ErNi 2 B 2 C journal October 1997
Magnetic twin boundaries and flux pinning in the antiferromagnetic superconductor ErNi 2 B 2 C journal December 2000
Visualization of ferromagnetic domains in Er Ni 2 B 2 C single crystals: Weak ferromagnetism and its coexistence with superconductivity journal November 2007
Weak ferromagnetic order in the superconducting ErNi 2 11 B 2 C journal April 2002
Direct measurement of the magnetic penetration depth by magnetic force microscopy journal October 2012
Microscopic coexistence of magnetism and superconductivity in ErNi2B2C journal July 1996
Effects of annealing temperature and time on the electrical resistivity of single crystal RNi2B2C (R=Gd–Lu, Y) journal May 2002
Mechanics of individual isolated vortices in a cuprate superconductor journal November 2008
Enhanced Critical Currents of Superconducting ErNi 2 B 2 C in the Ferromagnetically Ordered State journal March 2000
Strong enhancement of the critical current at the antiferromagnetic transition in ErNi 2 B 2 C single crystals journal April 2013
Possible Coexisting Superconducting and Magnetic States journal January 1981
Ferromagnetic Superconductors: A Vortex Phase in Ternary Rare-Earth Compounds journal June 1980
Electromagnetic Effects near the Superconductor-to-Ferromagnet Transition journal April 1979
Spontaneous Vortex Phase Discovered? journal January 1997

Cited By (2)

Pure odd-frequency superconductivity at the cores of proximity vortices journal January 2017
Pure Odd Frequency Superconductivity at the Cores of Proximity Vortices text January 2016

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