Observation of the “Bloch Oscillations” in Granular Films of Oxidized Tin Particles

Observation of the “Bloch Oscillations” in Granular Films of Oxidized Tin Particles

Experimental observation of the “Bloch oscillations” which are predicted theoretically in small Josephson junctions, resulting from their macroscopic quantum nature, has been made in superconducting granular tin films, the sheet resistance of which ranges from 3 to 12 kΩ at 4.2 K. We show that the v...

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Veröffentlicht in:Japanese Journal of Applied Physics 1987-01, Vol.26 (S3-2), p.1379
Hauptverfasser: Yoshihiro, Kazuo, Kinoshita, Joji, Inagaki, Katsuya, Yamanouchi, Chikako, Kobayashi, Shun'ichi, Karasawa, Takeshi
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container_issue S3-2
container_start_page 1379
container_title Japanese Journal of Applied Physics
container_volume 26
creator Yoshihiro, Kazuo
Kinoshita, Joji
Inagaki, Katsuya
Yamanouchi, Chikako
Kobayashi, Shun'ichi
Karasawa, Takeshi
description Experimental observation of the “Bloch oscillations” which are predicted theoretically in small Josephson junctions, resulting from their macroscopic quantum nature, has been made in superconducting granular tin films, the sheet resistance of which ranges from 3 to 12 kΩ at 4.2 K. We show that the values of 2ef obtained from the experimental V - I characteristics and a relationship I = 2ef are in agreement to within 0.3 % with those calculated using the frequency f of the microwave fields applied. It is one of the important conditions to observe the “Bloch oscillations” in the junction network that the number of parallel paths connecting two current electrodes is a few hundreds or less.
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title Observation of the “Bloch Oscillations” in Granular Films of Oxidized Tin Particles
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