LaPt2Al2 - new superconducting material
Our study is focused on superconductivity in LaPt2Al2 compound. Specific heat and electrical resistivity measurements reveal a superconducting state below 0.57 K. Superconducting behaviour is in agreement with the weak coupling limit of BCS theory. The electronic Sommerfeld coefficient and equilibri...
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| Veröffentlicht in: | Journal of alloys and compounds 2020-12, Vol.848, p.156360, Article 156360 |
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| container_title | Journal of alloys and compounds |
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| creator | Doležal, P. Diviš, M. Bartha, K. Javorský, P. |
| description | Our study is focused on superconductivity in LaPt2Al2 compound. Specific heat and electrical resistivity measurements reveal a superconducting state below 0.57 K. Superconducting behaviour is in agreement with the weak coupling limit of BCS theory. The electronic Sommerfeld coefficient and equilibrium volume were described by first principles methods. The calculated electron phonon constant, λ=0.48, using the McMillan formula is small. The crystal lattice of LaPt2Al2 is described by the orthorhombic space group Cmme. Polarisation contrast microscopy reveals a domain structure, which is the result of a symmetry lowering structural transition above room temperature.
•The superconducting state was found in LaPt2Al2 below 0.57 K.•The superconducting behaviour is in agreement with Bardeen–Cooper–Schrieffer theory.•The domain structure suggests structural transition above the room temperature. |
| doi_str_mv | 10.1016/j.jallcom.2020.156360 |
| format | Article |
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•The superconducting state was found in LaPt2Al2 below 0.57 K.•The superconducting behaviour is in agreement with Bardeen–Cooper–Schrieffer theory.•The domain structure suggests structural transition above the room temperature.</description><subject>BCS theory</subject><subject>Crystal lattices</subject><subject>Electrical resistivity</subject><subject>First principles</subject><subject>Heat capacity</subject><subject>Intermetallics</subject><subject>Room temperature</subject><subject>Superconductivity</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkEtLxDAUhYMoOI7-BKHgwlXHJDdJk5UMgy8o6ELXIU0TSeljTFrFf2-Hzt7Vhcs5597zIXRN8IZgIu6aTWPa1g7dhmI677gAgU_QisgCciaEOkUrrCjPJUh5ji5SajDGRAFZodvSvI1029Isz3r3k6Vp76Id-nqyY-g_s86MLgbTXqIzb9rkro5zjT4eH953z3n5-vSy25a5BSjGnBkB2FlZMGkoWC4oB1wZXlUclJecYFkpx71ktgDhsZ8_VUoZKpmvKgawRjdL7j4OX5NLo26GKfbzSU0ZZ0IWhMlZxReVjUNK0Xm9j6Ez8VcTrA9MdKOPTPSBiV6YzL77xefmCt_BRZ1scL11dYjOjroewj8Jf8Avae0</recordid><startdate>20201225</startdate><enddate>20201225</enddate><creator>Doležal, P.</creator><creator>Diviš, M.</creator><creator>Bartha, K.</creator><creator>Javorský, P.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20201225</creationdate><title>LaPt2Al2 - new superconducting material</title><author>Doležal, P. ; Diviš, M. ; Bartha, K. ; Javorský, P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-4a630ec8748a23c562530ba5bb539f85108b9e5f84c736f0f360999a284fbb433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>BCS theory</topic><topic>Crystal lattices</topic><topic>Electrical resistivity</topic><topic>First principles</topic><topic>Heat capacity</topic><topic>Intermetallics</topic><topic>Room temperature</topic><topic>Superconductivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Doležal, P.</creatorcontrib><creatorcontrib>Diviš, M.</creatorcontrib><creatorcontrib>Bartha, K.</creatorcontrib><creatorcontrib>Javorský, P.</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Doležal, P.</au><au>Diviš, M.</au><au>Bartha, K.</au><au>Javorský, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>LaPt2Al2 - new superconducting material</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2020-12-25</date><risdate>2020</risdate><volume>848</volume><spage>156360</spage><pages>156360-</pages><artnum>156360</artnum><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>Our study is focused on superconductivity in LaPt2Al2 compound. Specific heat and electrical resistivity measurements reveal a superconducting state below 0.57 K. Superconducting behaviour is in agreement with the weak coupling limit of BCS theory. The electronic Sommerfeld coefficient and equilibrium volume were described by first principles methods. The calculated electron phonon constant, λ=0.48, using the McMillan formula is small. The crystal lattice of LaPt2Al2 is described by the orthorhombic space group Cmme. Polarisation contrast microscopy reveals a domain structure, which is the result of a symmetry lowering structural transition above room temperature.
•The superconducting state was found in LaPt2Al2 below 0.57 K.•The superconducting behaviour is in agreement with Bardeen–Cooper–Schrieffer theory.•The domain structure suggests structural transition above the room temperature.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2020.156360</doi></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | BCS theory Crystal lattices Electrical resistivity First principles Heat capacity Intermetallics Room temperature Superconductivity |
| title | LaPt2Al2 - new superconducting material |
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