Superconducting properties of Al wires deposited on SrTiO3 and LaAlO3/SrTiO3 substrates
| Autor: | Anurag Gupta, Anjana Dogra, Sudhir Husale, R. P. Aloysius, Abhishek Kumar |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Superconductivity Materials science Condensed matter physics chemistry.chemical_element Insulator (electricity) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Focused ion beam Condensed Matter::Materials Science Si substrate chemistry Aluminium Condensed Matter::Superconductivity 0103 physical sciences Superconducting transition temperature Laalo3 srtio3 Critical current 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 28:88-91 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.01.340 |
| Popis: | We report the superconducting properties of Aluminium (Al) wires deposited on different substrates. The substrates selected are the band insulator of SrTiO3 (STO) and the 2DEG system of LaAlO3/SrTiO3 (LAO/STO). Al wires were prepared from the respective films using focused ion beam assisted milling. A significant reduction in the superconducting transition temperature was observed with respect to a control Al film which was deposited on SiO2/Si substrate. The superconducting transition temperature of Al wire on STO substrate is 0.36 K, while that of LAO/STO substrate is 0.66 K. The temperature dependent critical current follows the classical Ginzburg-Landau formulation but with slightly varying exponent values compared to the value of 3/2 corresponding to a film in the clean limit. |
| Databáze: | OpenAIRE |
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