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Superconductivity in the ternary antimonide LaZnSb
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| Accessrights |
open access |
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Copyright © 2007 IOP Publishing Ltd.
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| Description |
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Abstract
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We discovered superconductivity in the ternary antimonide La6ZnSb15, and its superconducting properties are discussed through measurements of the resistivity, specific heat and magnetization. The crystal structure of La6ZnSb15 is an orthorhombic La6MnSb15-type structure consisting of Sb sheets. Its electronic structure indicates that the conduction bands mainly originate from Sb 5p orbitals in these Sb sheets. The electrical resistivity and magnetization measurements reveal that this compound is a type-II superconductor below 3.7 K. The upper critical field at zero temperature, μ0Hc2(0), is determined to be 851(8) mT. In the normal state, the electronic specific heat coefficient, γ, and the Debye temperature, ΘD, are found to be 18.8(8) mJ mol-1 K-2 and 218(1) K, respectively. From the electronic specific heat in the superconducting state, this compound is a typical weak-coupling BCS superconductor.
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| Publisher |
en
IOP Publishing Ltd.
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| Resource Type |
journal article |
| Version Type |
AM |
| Identifier |
HDL
http://hdl.handle.net/2115/17200
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| Relation |
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URI
http://www.iop.org/
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isVersionOf
DOI
https://doi.org/10.1088/0953-8984/19/1/016218
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| Journal |
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PISSN
0953-8984
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EISSN
1361-648X
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en
Journal of Physics Condensed Matter
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Volume Number19
Issue Number1
Page Start016218
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| Oaidate |
2023-07-26 |
