Thick Bi2Sr2CaCu2O8+{\delta} films grown by liquid-phase epitaxy for Josephson THz applications
| Autor: | Simsek, Y, Vlasko-Vlasov, V, Koshelev, A E, Benseman, T, Hao, Y, Kesgin, I, Claus, H, Pearson, J, Kwok, W-K, Welp, U |
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| Rok vydání: | 2017 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1361-6668/aa987e |
| Popis: | Theoretical and experimental studies of intrinsic Josephson junctions that naturally occur in high-Tc superconducting Bi2Sr2CaCu2O8+{\delta} (Bi-2212) have demonstrated their potential for novel types of compact devices for the generation and sensing of electromagnetic radiation in the THz range. Here, we show that the THz-on-a-chip concept may be realized in liquid phase epitaxial-grown (LPE) thick Bi-2212 films. We have grown {\mu}m-thick Bi-2212 LPE films on MgO substrates. These films display excellent c-axis alignment and single crystal grains of about 650x150 {\mu}m2 in size. A branched current-voltage characteristic was clearly observed in c-axis transport, which is a clear signature of underdamped intrinsic Josephson junctions, and a prerequisite for THz-generation. We discuss LPE growth conditions allowing improvement of the structural quality and superconducting properties of Bi-2212 films for THz applications. Comment: 19 pages, 6 figures. The manuscript has been accepted for publication in Superconductor Science and Technology |
| Databáze: | arXiv |
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