Dynamic observation of vortices in superconductors using a holography electron microscope

Conference · Fri Apr 01 00:00:00 EST 1994 · Journal of Superconductivity; (United States)

OSTI ID:6656858

Tonomura, Akira ^[1]

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1. Hitachi, Ltd., Saitama (Japan) Research Development Corporation of Japan, Saitama (Japan)

Individual vortices in superconductors are directly observed with our holography electron microscope. Vortices cannot be viewed as an electron micrograph, but only as a holographic interference micrograph or a defocused micrograph (Lorentz micrograph), since vortices are phase objects to the illumination electron beam. Since the flux itself, and not its replica, is detected, even the dynamic behavior can be observed. The dynamics of vortices in a Nb thin film can be observed in real time when the sample conditions, such as the temperature or the applied magnetic field, change. 6 refs., 5 figs.

• OSTI ID: 6656858
• Report Number(s): CONF-930710-; CODEN: JOUSEH; TRN: 95-004007
• Journal Information: Journal of Superconductivity; (United States), Vol. 7:2; Conference: Physics and chemistry of molecular and oxide superconductors conference, Eugene, OR (United States), 27-31 Jul 1993; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SUPERCONDUCTORS
ELECTRON MICROSCOPY
HOLOGRAPHY
INTERFEROMETRY
NIOBIUM
REAL TIME SYSTEMS
THIN FILMS
VORTICES
ELEMENTS
FILMS
METALS
MICROSCOPY
TRANSITION ELEMENTS
360107* - Metals & Alloys- Superconducting Properties- (1992-)
360104 - Metals & Alloys- Physical Properties
360102 - Metals & Alloys- Structure & Phase Studies