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Title: Large magnetic penetration depth and thermal fluctuations in a superconducting Ca10(Pt3As8)[(Fe1 xPtx)2As2]5 (x = 0.097) single crystal

Abstract

We have measured the temperature dependence of the absolute value of the magnetic penetration depth {lambda}(T) in a Ca{sub 10}(Pt{sub 3}As{sub 8})[(Fe{sub 1-x}Pt{sub x}){sub 2}As{sub 2}]{sub 5} (x = 0.097) single crystal using a low-temperature magnetic force microscope (MFM). We obtain {lambda}{sub ab}(0) {approx} 1000 nm via extrapolating the data to T = 0. This large {lambda} and pronounced anisotropy in this system are responsible for large thermal fluctuations and the presence of a liquid vortex phase in this low-temperature superconductor with a critical temperature of 11 K, consistent with the interpretation of the electrical transport data. The superconducting parameters obtained from {lambda} and coherence length {zeta} place this compound in the extreme type II regime. Meissner responses (via MFM) at different locations across the sample are similar to each other, indicating good homogeneity of the superconducting state on a submicron scale.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1049293
Report Number(s):
BNL-98279-2012-JA
Journal ID: ISSN 1098-0121; 39KC02000; TRN: US201217%%627
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 85; Journal Issue: 18; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANISOTROPY; COHERENCE LENGTH; CRITICAL TEMPERATURE; FLUCTUATIONS; MICROSCOPES; MONOCRYSTALS; PENETRATION DEPTH; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE; TRANSPORT; extrapolating; fluctuations; superconducting; homogeneity; national synchrotron light source

Citation Formats

Kim, J, Nazaretski, E, Ronning, F, Haberkorn, N, Civale, L, Ni, N, Cava, R J, Thompson, J D, and Movshovich, R. Large magnetic penetration depth and thermal fluctuations in a superconducting Ca10(Pt3As8)[(Fe1 xPtx)2As2]5 (x = 0.097) single crystal. United States: N. p., 2012. Web. doi:10.1103/PhysRevB.85.180504.
Kim, J, Nazaretski, E, Ronning, F, Haberkorn, N, Civale, L, Ni, N, Cava, R J, Thompson, J D, & Movshovich, R. Large magnetic penetration depth and thermal fluctuations in a superconducting Ca10(Pt3As8)[(Fe1 xPtx)2As2]5 (x = 0.097) single crystal. United States. https://doi.org/10.1103/PhysRevB.85.180504
Kim, J, Nazaretski, E, Ronning, F, Haberkorn, N, Civale, L, Ni, N, Cava, R J, Thompson, J D, and Movshovich, R. 2012. "Large magnetic penetration depth and thermal fluctuations in a superconducting Ca10(Pt3As8)[(Fe1 xPtx)2As2]5 (x = 0.097) single crystal". United States. https://doi.org/10.1103/PhysRevB.85.180504.
@article{osti_1049293,
title = {Large magnetic penetration depth and thermal fluctuations in a superconducting Ca10(Pt3As8)[(Fe1 xPtx)2As2]5 (x = 0.097) single crystal},
author = {Kim, J and Nazaretski, E and Ronning, F and Haberkorn, N and Civale, L and Ni, N and Cava, R J and Thompson, J D and Movshovich, R},
abstractNote = {We have measured the temperature dependence of the absolute value of the magnetic penetration depth {lambda}(T) in a Ca{sub 10}(Pt{sub 3}As{sub 8})[(Fe{sub 1-x}Pt{sub x}){sub 2}As{sub 2}]{sub 5} (x = 0.097) single crystal using a low-temperature magnetic force microscope (MFM). We obtain {lambda}{sub ab}(0) {approx} 1000 nm via extrapolating the data to T = 0. This large {lambda} and pronounced anisotropy in this system are responsible for large thermal fluctuations and the presence of a liquid vortex phase in this low-temperature superconductor with a critical temperature of 11 K, consistent with the interpretation of the electrical transport data. The superconducting parameters obtained from {lambda} and coherence length {zeta} place this compound in the extreme type II regime. Meissner responses (via MFM) at different locations across the sample are similar to each other, indicating good homogeneity of the superconducting state on a submicron scale.},
doi = {10.1103/PhysRevB.85.180504},
url = {https://www.osti.gov/biblio/1049293}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 18,
volume = 85,
place = {United States},
year = {Fri May 18 00:00:00 EDT 2012},
month = {Fri May 18 00:00:00 EDT 2012}
}