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.
@article{arxiv.1711.00999,
title = {Thick Bi2Sr2CaCu2O8+{\delta} films grown by liquid-phase epitaxy for Josephson THz applications},
author = {Y Simsek and V Vlasko-Vlasov and A E Koshelev and T Benseman and Y Hao and I Kesgin and H Claus and J Pearson and W-K Kwok and U Welp},
journal= {arXiv preprint arXiv:1711.00999},
year = {2018}
}
Comments
19 pages, 6 figures. The manuscript has been accepted for publication in Superconductor Science and Technology