Magnetometric sensor magnetically isolated two regions formed of

Details Magnetometric sensor magnetically isolated two regions formed of Magnetometric sensor magnetically isolated two regions formed of

1996-11-21

1998-02-24

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

360113, 360119, 360126, G11B 5127, G11B 533

Patent

active

057216541

ABSTRACT:
A magnetometric sensor has a wide p-portion formed of almost perfectly spin-polarized material, a wide d-portion also formed of almost perfectly spin-polarized material different in coercive force and a narrow n-portion provided between the wide p-portion and the wide d-portion formed of the almost perfectly spin-polarized material or non-magnetic material, and one of the p-portion and the d-portion changes the spin axes of the conduction electrons in the opposite direction to the other in the presence of a magnetic field for providing a potential gap between the Fermi surface of the p-portion and the Fermi surface of the d-portion, thereby causing electric current to change the amount thereof.

REFERENCES:
patent: 5432373 (1995-07-01), Johnson
patent: 5652445 (1997-07-01), Johnson
patent: 5654566 (1997-08-01), Johnson
M. Johnson, "Bipolar Spin Switch", Science, vol. 260, Apr. 16, 1993, pp. 320-323.

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