30 THz mixing experiments on high temperature superconducting Josephson junctions

Photodoping Effects in High Critical Temperature Superconducting Films and Josephson Junctions

Persistent photoconductivity is an interesting and unusual property of high temperature superconductors. Illumination of these compounds can lead to a change in doping that is persistent at low temperature and relaxes back to its initial value at elevated temperatures. This photodoping can give rise to an improvement of superconducting properties, which is contrary to the illumination effects i...

Thermal Activation of Superconducting Josephson Junctions

Superconducting quantum circuits (SQCs) are being explored as model systems for scalable quantum computing architectures. Josephson junctions are extensively used in superconducting quantum interference devices (SQUIDs) and in persistent-current qubit systems. Noise excitations, however, have a critical influence on their dynamics. Thus, the primary focus of this research was to investigate the...

Stationary Propeflies of High Critical Temperature Proximity Effect Josephson Junctions

The discovery of superconductors with high critical temperatures (~) has led to a considerable effort to fabricate Josephson junctions operating at temperatures approaching, or even exceeding, 77 K for both scientific investigations and potential applications. Superconductor-normal-superconductor ( SNS) devices, with noble or oxide metals as normal interlayers, are perhaps the most widely explo...

Quantum effects in small-capacitance high temperature superconducting tunneling junctions

Perturbed period-doubling bifurcation. II. Experiments on Josephson junctions.