Emitter-coupled spin-transistor logic
AssigneeNorthwestern University
InventorsJoseph S. Friedman, Gokhan Memik, Bruce W. Wessels
Life of this patent
Estimating the term…
Abstract
A switch comprising a spin-transistor and a first control wire. The spin-transistor is configured so that when a magnetic field applied to the spin-transistor is less than a threshold value, the transistor is in a conductive state in which electric current flows through the spin-transistor. When the magnetic field applied to the spin-transistor is greater than the threshold value, the spin-transistor is in a resistive state in which the electric current flowing through the spin-transistor is substantially reduced. The first control wire is for receiving a current to affect the magnetic field applied to the spin-transistor.
Claims24
A switch, comprising:
- a spin-transistor configured so that when a magnetic field applied to the spin-transistor is less than a threshold value, the transistor is in a conductive state in which electric current flows through the spin-transistor, and when the magnetic field applied to the spin-transistor is greater than the threshold value, the spin-transistor is in a resistive state in which the electric current flowing through the spin-transistor is substantially reduced;
- and
- a first control wire for receiving a current to affect the magnetic field applied to the spin-transistor.
A switch, comprising:
- a spin-transistor;
- and
- a first control wire for carrying a current to create a magnetic field that affects amplification of the spin-transistor.
A logic circuit, comprising:
- a spin-transistor having an emitter, a collector and a base;
- a first control wire for receiving an input current to create a magnetic field that affects amplification of the spin-transistor;
- a first resistor between the spin-transistor collector and one of a low voltage source and a high voltage source;
- a second transistor having an emitter, a collector and a base, wherein the emitter of the second transistor is coupled to the emitter of the spin-transistor;
- a second resistor between the second transistor collector and the one of the low voltage source and the high voltage source;
- and
- a third resistor between the spin-transistor emitter and the other of the low voltage source and the high voltage source.
Dependencies are inferred from the claim text.