Z. Y. Chen

Spin-polarized quasiparticle injection devices using Au/YBa2Cu3O7/LaAlO3/Nd0.7Sr0.3MnO3 heterostructures

Oxide heterostructures were used for studies of quasiparticle injection effects in high-Tc superconducting thin films. The effect of injection of spin polarized quasiparticles from a ferromagnetic gate layer was compared to that of unpolarized quasiparticles from a nonmagnetic metallic gate. Transport measurements of the superconducting layer showed strong suppression in the supercurrent by the injection of spin-polarized quasiparticles, and a current gain of as large as five was attained. This is 10 to 30 times larger than the gain of unpolarized injection devices. Such large effects could be useful in a variety of active high-Tc superconductor/colossal magnetoresistance heterostructure based devices.

Spin-polarized transport across aLa0.7Sr0.3MnO3/YBa2Cu3O7−xinterface: Role of Andreev bound states

Transport across an La

The magnetism of a buried La0.7Sr0.3MnO3 interface

_{0.7}

NOVEL HIGH-TC TRANSISTORS WITH MANGANITE OXIDES

Sr

The effects of YBa2Cu3O7−δ overlayers on the magnetic and electronic properties of La0.7Sr0.3MnO3

_{0.3}MnO

Superconducting cuprates and magnetoresistive manganites: similarities and contrasts

_{3}/YBa

Correlation of large dielectric response with the ordering transitions in Pr 0.67 Ca 0.33 MnO 3

_{2}Cu

Spin-polarized transport across a La 0.7 Sr 0.3 MnO 3 /YBa 2 Cu 3 O 7-x interface: role of Andreev bound states

_{3}

Suppression of Zero Bias Conductance Peak by Spin-Polarized Injection Across an La

O

_{0.7}

_{7}