Regensburg 2004 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 1: Supraleitung: Herstellung und Charakterisierung

TT 1.3: Vortrag

Montag, 8. März 2004, 10:00–10:15, H20

Superconducting thin films of the heavy fermion compound UNi₂Al₃ — •M. Jourdan, A. Zakharov, M. Foerster, and H. Adrian — Institut für Physik, Johannes Gutenberg Universität, 55099 Mainz

Thin films of the presumably unconventional superconductor UNi₂Al₃ were prepared to obtain dedicated samples for novel experiments on the superconducting order parameter (e. g. tunnelling spectroscopy). UNi₂Al₃ was deposited by coevaporation of the elementary components in an MBE system. The preparation on various substrates was studied and epitaxial growth in (100)-direction was observed. With optimized deposition parameters thin films showing the typical properties known from bulk samples were obtained. The best films up to now show a superconducting transition with T_c ≃ 0.75K. Measurements of the angular dependence of the upper critical field B_c2(θ) will be presented.