Vortex creep at very low temperatures in single crystals of the extreme type-II Rh9In4S4
Abstract
Here, we image vortex creep at very low temperatures using scanning tunneling microscopy in the superconductor Rh9In4S4 (Tc = 2.25 K). We measure the superconducting gap of Rh9In4S4, finding Δ ≈ 0.33 meV, and image a hexagonal vortex lattice up to close to Hc2 observing slow vortex creep at temperatures as low as 150 mK. We estimate thermal and quantum barriers for vortex motion and show that thermal fluctuations likely cause vortex creep, in spite of being at temperatures T/Tc < 0.1. We study creeping vortex lattices by making images during long times and show that the vortex lattice remains hexagonal during creep with vortices moving along one of the high-symmetry axes of the vortex lattice. Furthermore, the creep velocity changes with the scanning window suggesting that creep depends on the local arrangements of pinning centers. Vortices fluctuate on small-scale erratic paths, indicating that the vortex lattice makes jumps trying different arrangements during its travel along the main direction for creep. Lastly, the images provide a visual account of how vortex lattice motion maintains hexagonal order, while showing dynamic properties characteristic of a glass.
- Authors:
-
- Autonomous University of Madrid (Spain). Laboratorio de Bajas Temperaturas y Altos Campos Magneticos, Unidad Asociada UAM, CSIC, Departamento de Fisica de la Materia Condensada, Instituto de Ciencia de Materiales Nicolas Cabrera and Condensed Matter Physics Center (IFIMAC)
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Department of Physics & Astronomy
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1374737
- Alternate Identifier(s):
- OSTI ID: 1350789
- Report Number(s):
- IS-J-9304
Journal ID: ISSN 2469-9950; PRBMDO
- Grant/Contract Number:
- AC02-07CH11358; 679080; 618321; MP-1201; FIS2014-54498-R; MDM-2014-0377
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 95; 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
Herrera, Edwin, Bemito-Llorens, Jose, Kalarachchi, Udhara, Bud'ko, Sergey, Canfield, Paul, Guillamon, Isabel, and Suderow, Hermann. Vortex creep at very low temperatures in single crystals of the extreme type-II Rh9In4S4. United States: N. p., 2017.
Web. doi:10.1103/PhysRevB.95.134505.
Herrera, Edwin, Bemito-Llorens, Jose, Kalarachchi, Udhara, Bud'ko, Sergey, Canfield, Paul, Guillamon, Isabel, & Suderow, Hermann. Vortex creep at very low temperatures in single crystals of the extreme type-II Rh9In4S4. United States. https://doi.org/10.1103/PhysRevB.95.134505
Herrera, Edwin, Bemito-Llorens, Jose, Kalarachchi, Udhara, Bud'ko, Sergey, Canfield, Paul, Guillamon, Isabel, and Suderow, Hermann. Fri .
"Vortex creep at very low temperatures in single crystals of the extreme type-II Rh9In4S4". United States. https://doi.org/10.1103/PhysRevB.95.134505. https://www.osti.gov/servlets/purl/1374737.
@article{osti_1374737,
title = {Vortex creep at very low temperatures in single crystals of the extreme type-II Rh9In4S4},
author = {Herrera, Edwin and Bemito-Llorens, Jose and Kalarachchi, Udhara and Bud'ko, Sergey and Canfield, Paul and Guillamon, Isabel and Suderow, Hermann},
abstractNote = {Here, we image vortex creep at very low temperatures using scanning tunneling microscopy in the superconductor Rh9In4S4 (Tc = 2.25 K). We measure the superconducting gap of Rh9In4S4, finding Δ ≈ 0.33 meV, and image a hexagonal vortex lattice up to close to Hc2 observing slow vortex creep at temperatures as low as 150 mK. We estimate thermal and quantum barriers for vortex motion and show that thermal fluctuations likely cause vortex creep, in spite of being at temperatures T/Tc < 0.1. We study creeping vortex lattices by making images during long times and show that the vortex lattice remains hexagonal during creep with vortices moving along one of the high-symmetry axes of the vortex lattice. Furthermore, the creep velocity changes with the scanning window suggesting that creep depends on the local arrangements of pinning centers. Vortices fluctuate on small-scale erratic paths, indicating that the vortex lattice makes jumps trying different arrangements during its travel along the main direction for creep. Lastly, the images provide a visual account of how vortex lattice motion maintains hexagonal order, while showing dynamic properties characteristic of a glass.},
doi = {10.1103/PhysRevB.95.134505},
journal = {Physical Review B},
number = 13,
volume = 95,
place = {United States},
year = {Fri Apr 07 00:00:00 EDT 2017},
month = {Fri Apr 07 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
Effect of dimensionality on the vortex dynamics in a type-II superconductor
journal, November 2019
- Kundu, Hemanta Kumar; Amin, Kazi Rafsanjani; Jesudasan, John
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Thermal creep induced by cooling a superconducting vortex lattice
journal, February 2020
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Thermal creep induced by cooling a superconducting vortex lattice
text, January 2020
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Effect of dimensionality on the vortex-dynamics in type-II superconductor
text, January 2020
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- arXiv