Atomically imaged crystal structure and normal-state properties of superconducting
Abstract
Superconducting Ca10Pt4As8(Fe2As2)5 is rare because optimal superconducting transition temperature is achieved without chemical doping or pressure. Furthermore, the unclear crystal structure limits our ability to understand the structure-property relationship. Using atomically resolved scanning transmission electron microscopy and electron diffraction, we directly determine the structure of this superconductor: it forms a monoclinic structure (space group P21/n) with lattice parameters a = b = 8.76Å, c = 20.18Å, and γ = 90.5°. Compared with previously reported structures derived from diffraction experiments, the c-lattice constant is doubled due to alternating stacking of Pt4As8 layers, which induces a high density of stacking faults. With the establishment of the crystal structure, stacking faults, and chemical composition, the distinctive normal-state electrical and thermal transport properties of our superconducting Ca10Pt4As8((Fe1–xPtx)2As2)5 (x ~ 0.05) single crystals can be explained.
- Authors:
-
- Louisiana State Univ., Baton Rouge, LA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Louisiana State Univ., Baton Rouge, LA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1566882
- Alternate Identifier(s):
- OSTI ID: 1560309
- Report Number(s):
- BNL-212152-2019-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US2001013
- Grant/Contract Number:
- SC0012704; AC02-98CH10886
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 100; Journal Issue: 9; 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
Wang, Zhen, Jin, R., Wu, Lijun, Tao, Jing, Karki, A. B., Pan, J. Y., Zhu, Yimei, and Plummer, E. W. Atomically imaged crystal structure and normal-state properties of superconducting Ca10Pt4As8((Fe1–xPtx)2As2)5. United States: N. p., 2019.
Web. doi:10.1103/PhysRevB.100.094103.
Wang, Zhen, Jin, R., Wu, Lijun, Tao, Jing, Karki, A. B., Pan, J. Y., Zhu, Yimei, & Plummer, E. W. Atomically imaged crystal structure and normal-state properties of superconducting Ca10Pt4As8((Fe1–xPtx)2As2)5. United States. https://doi.org/10.1103/PhysRevB.100.094103
Wang, Zhen, Jin, R., Wu, Lijun, Tao, Jing, Karki, A. B., Pan, J. Y., Zhu, Yimei, and Plummer, E. W. Wed .
"Atomically imaged crystal structure and normal-state properties of superconducting Ca10Pt4As8((Fe1–xPtx)2As2)5". United States. https://doi.org/10.1103/PhysRevB.100.094103. https://www.osti.gov/servlets/purl/1566882.
@article{osti_1566882,
title = {Atomically imaged crystal structure and normal-state properties of superconducting Ca10Pt4As8((Fe1–xPtx)2As2)5},
author = {Wang, Zhen and Jin, R. and Wu, Lijun and Tao, Jing and Karki, A. B. and Pan, J. Y. and Zhu, Yimei and Plummer, E. W.},
abstractNote = {Superconducting Ca10Pt4As8(Fe2As2)5 is rare because optimal superconducting transition temperature is achieved without chemical doping or pressure. Furthermore, the unclear crystal structure limits our ability to understand the structure-property relationship. Using atomically resolved scanning transmission electron microscopy and electron diffraction, we directly determine the structure of this superconductor: it forms a monoclinic structure (space group P21/n) with lattice parameters a = b = 8.76Å, c = 20.18Å, and γ = 90.5°. Compared with previously reported structures derived from diffraction experiments, the c-lattice constant is doubled due to alternating stacking of Pt4As8 layers, which induces a high density of stacking faults. With the establishment of the crystal structure, stacking faults, and chemical composition, the distinctive normal-state electrical and thermal transport properties of our superconducting Ca10Pt4As8((Fe1–xPtx)2As2)5 (x ~ 0.05) single crystals can be explained.},
doi = {10.1103/PhysRevB.100.094103},
journal = {Physical Review B},
number = 9,
volume = 100,
place = {United States},
year = {Wed Sep 04 00:00:00 EDT 2019},
month = {Wed Sep 04 00:00:00 EDT 2019}
}
Web of Science
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