Electron holography and Aharonov-Bohm effect

Journal Article · Sat Apr 01 00:00:00 EST 1989 · Int. J. Mod. Phys. B; (United States)

DOI:https://doi.org/10.1142/S0217979289000403· OSTI ID:5627065

Tonomura, A

The Aharonov-Bohm (AB) effect was tested under conditions where an electron wave and a magnetic field did not overlap: The Meissner effect of the superconductor shielding a toroidal ferromagnet eliminated the leakage field. Using the newly-developed technique of electron holography, conclusive evidence for the AB effect was obtained by detecting a relative phase shift of /pi/ between the two electron waves passing through the hole and outside the toroid. The detected phase shift value of exactly /pi/ comes from the quantization of the magnetic flux within the superconductor. This quantization assures the complete shielding of the magnetic field.

• Research Organization: Hitachi Ltd., Tokyo (Japan)
• OSTI ID: 5627065
• Journal Information: Int. J. Mod. Phys. B; (United States), Vol. 3:4
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTORS
MEISSNER-OCHSENFELD EFFECT
ELECTRON-HOLE COUPLING
FERROMAGNETISM
HOLOGRAPHY
MAGNETIC FIELDS
QUANTIZATION
SHIELDING
SOLID-STATE PLASMA
MAGNETISM
PLASMA
656100* - Condensed Matter Physics- Superconductivity
656001 - Condensed Matter Physics- Solid-State Plasma