Physics – Optics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvl..56..792t&link_type=abstract
Physical Review Letters (ISSN 0031-9007), vol. 56, Feb. 24, 1986, p. 792-795.
Physics
Optics
207
Electromagnetic Shielding, Electron Beams, Magnetic Flux, Phase Shift, Quantum Mechanics, Superconducting Magnets, Electron Optics, Ferromagnetic Materials, Toroids
Scientific paper
More definitive verification of the Aharonov-Bohm effect than that offered after its prediction (Chambers, 1960) is experimentally achieved using a more completely shielded magnetic field source. A toroidal ferromagnet was covered with a superconducting layer of Nb, and a copper film 500-2000 A was evaporated on all of its surfaces. The relative phase shift between two electron beams, one passing through the hole of the toroid and the other passing outside the toroid, was measured with electron holography. The experimental results detected the predicted relative phase change, providing conclusive evidence for the AB effect, and also demonstrated the flux quantization.
Endo J.
Kawasaki Takeshi
Matsuda Takuya
Osakabe N.
Tonomura Akira
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