Abstract: An electromagnetic sensor for use in a variety of applications requiring extremely high sensitivity, such as measuring power and characteristics of incident electromagnetic radiation includes a superconducting layer that carries an exchange field for providing a spin splitting effect of charge carriers in the superconducting layer, a metal electrode, and an insulating layer arranged between the superconducting layer and metal electrode to form a spin filter junction therebetween. The electromagnetic sensor provides an antenna including a wave collecting element, in contact with the superconducting layer to convey thereinto external electromagnetic waves that are generated by an external source.

Abstract: A heat transfer device and method are disclosed. The device includes a working region (i.e., working substance) made from a first superconducting material having a superconducting state and a normal state when magnetized. The first superconducting material has a first energy gap while in the superconducting state. A substrate (i.e., cold reservoir) is connected to the working region at a first tunnel junction. The substrate may be a metallic substrate. A heat sink (i.e., hot reservoir) is connected to the working region at a second tunnel junction. The heat sink is made from a second superconducting material having a second energy gap that is larger than the first energy gap. In a particular example, the heat transfer device includes a metallic substrate is made from Copper, a working region made from Tantalum, a heat sink made from Niobium, and the first and second tunnel junctions are made from Tantalum Oxide.

Abstract: An electromagnetic sensor for use in a variety of applications requiring extremely high sensitivity, such as measuring power and characteristics of incident electromagnetic radiation includes a superconducting layer that carries an exchange field for providing a spin splitting effect of charge carriers in the superconducting layer, a metal electrode, and an insulating layer arranged between the superconducting layer and metal electrode to form a spin filter junction therebetween. The electromagnetic sensor provides an antenna including a wave collecting element, in contact with the superconducting layer to convey thereinto external electromagnetic waves that are generated by an external source.

Abstract: A superconducting logic element includes a superconducting tunnel junction including first and second superconductors. First and second insulating ferromagnets in contact with the first and second superconductors, respectively, generate by magnetic proximity effect a predetermined density of spin-split states in the first and second superconductors, respectively. A writing element applies a writing current to at least a superconductor and is in contact with one of the first or second insulating ferromagnets, so that the first and second insulating ferromagnets commute, by the magnetic field generated by the applied writing current, between a state with parallel magnetization to a state with antiparallel magnetization with respect to each other.

Abstract: A heat transfer device and method are disclosed. The device includes a working region (i.e., working substance) made from a first superconducting material having a superconducting state and a normal state when magnetized. The first superconducting material has a first energy gap while in the superconducting state. A substrate (i.e., cold reservoir) is connected to the working region at a first tunnel junction. The substrate may be a metallic substrate. A heat sink (i.e., hot reservoir) is connected to the working region at a second tunnel junction. The heat sink is made from a second superconducting material having a second energy gap that is larger than the first energy gap. In a particular example, the heat transfer device includes a metallic substrate is made from Copper, a working region made from Tantalum, a heat sink made from Niobium, and the first and second tunnel junctions are made from Tantalum Oxide.

Abstract: A superconducting logic element includes a superconducting tunnel junction including first and second superconductors. First and second insulating ferromagnets in contact with the first and second superconductors, respectively, generate by magnetic proximity effect a predetermined density of spin-split states in the first and second superconductors, respectively. A writing element applies a writing current to at least a superconductor and is in contact with one of the first or second insulating ferromagnets, so that the first and second insulating ferromagnets commute, by the magnetic field generated by the applied writing current, between a state with parallel magnetization to a state with antiparallel magnetization with respect to each other.