Spin torque oscillator maser
AssigneeMassachusetts Institute of Technology
InventorsLuqiao Liu, Justin Hou, Pengxiang Zhang
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Abstract
An oscillator comprising, a cavity wherein the cavity comprises an electrical conductor. The oscillator comprising an electrical insulator disposed on a surface of the cavity; and a heterostructure disposed on a surface of the electrical insulator and having a first end and a second end, the heterostructure comprising one or more spin current source layers and one or more magnetic material layers. In response to an electrical current passed through the spin current source, an oscillation occurs in a plurality of magnetic domains of the magnetic material, wherein the oscillations have substantially the same phase.
Claims18
An oscillator comprising:
- a cavity, the cavity comprising an electrical conductor;
- an electrical insulator disposed on a surface of the cavity;
- and
- a heterostructure disposed on a surface of the electrical insulator and having a first end and a second end, the heterostructure comprising one or more spin current source layers and one or more magnetic material layers;
- wherein in response to an electrical current passed through the spin current source, an oscillation occurs in a plurality of magnetic domains of the magnetic material, wherein the oscillations have substantially the same phase.
An oscillator comprising:
- a substrate;
- a cavity disposed on a surface of the substrate, the cavity comprising an electrical conductor;
- an electrical insulator disposed on a surface of the cavity;
- a heterostructure disposed on a surface of the electric insulator and having a first end and a second end, the heterostructure comprising one or more spin current source layers and one or more magnetic material layers;
- and
- a first electrically conducting pad disposed on a surface of the first end of the heterostructure and a second electrically conducting pad disposed on a surface of the second end of the heterostructure;
- wherein an electrical current passed from the first pad to the second pad through the spin current source simultaneously causes an oscillation in each of a plurality of magnetic domains of the magnetic material, wherein the oscillations have substantially the same phase.
A microwave photon-magnon hybrid system comprising:
- a device comprising at least one Spin Hall Effect (SHE) layer and at least one magnetic material layer, wherein in response to a charge current flowing through the SHE layer non-equilibrium spins are injected into the at least one magnetic material layer to change a magnon dissipation rate;
- and
- a microwave resonator inductively coupled to the device with magnons, wherein the dissipation rates and the coupling cooperativity can be adjusted via the application of an electrical current applied to the SHE layer.
Dependencies are inferred from the claim text.