Spin filter
AssigneeTohoku University
InventorsHideo Ohno, Keita Ohtani
Life of this patent
Estimating the term…
Abstract
A spin filter is composed of a first magnetic semiconductor multi-quantum well structure, a second magnetic semiconductor multi-quantum well structure and a non-magnetic semiconductor quantum well structure which is located between the first magnetic semiconductor multi-quantum well structure and the second magnetic semiconductor multi-quantum well structure. The first magnetic semiconductor multi-quantum well structure and the second magnetic semiconductor multi-quantum well structure are split in spin state. Carriers in down-spin state are penetrated through the first magnetic semiconductor multi-quantum well structure and carriers in up-spin state are penetrated through the second magnetic semiconductor multi-quantum well structure.
Claims17
A spin filter comprising a first magnetic semiconductor multi-quantum well structure, a second magnetic semiconductor multi-quantum well structure and a non-magnetic semiconductor quantum well structure which is located between said first magnetic semiconductor multi-quantum well structure and said second magnetic semiconductor multi-quantum well structure,
- said first magnetic semiconductor multi-quantum well structure and said second magnetic semiconductor multi-quantum well structure being split in spin state,
- whereby carriers in down-spin state are penetrated through said first magnetic semiconductor multi-quantum well structure and carriers in up-spin state are penetrated through said second magnetic semiconductor multi-quantum well structure.
A spin filter comprising a magnetic semiconductor multi-quantum well structure and a non-magnetic semiconductor quantum well structure which is located adjacent to said magnetic semiconductor multi-quantum well structure,
- said magnetic semiconductor multi-quantum well structure being split in spin state,
- whereby carriers either in down-spin state or in up-spin state are penetrated through said magnetic semiconductor multi-quantum well structure.
Dependencies are inferred from the claim text.