Spatially resolved penetration depth measurements and vortex manipulation in the ferromagnetic superconductor
- Institute for Basic Science, Pohang (Korea); Pohang Univ. of Science and Technology, Pohang (Korea)
- 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
Web of Science
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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