Transport properties of LCMO/YBCO hybrid structures

Epitaxial superlattices of half-metal, colossal magnetoresistive La2/3Ca1/3MnO3 (HM-CMR) and high-Tc superconducting YBa2Cu3O7−δ (HTSC) are prepared on single-crystalline substrate by pulsed laser deposition. Transport measurements R(T) at a superconducting layer of these hybrids exhibit features of both of the constituents of the superlattice. Additionally, below T = 35 K, far below the superconducting transition temperature a reentrance into a resistive state can be observed.