Esaki, Leo

Esaki, Leo
orig. Esaki Reiona

born March 12, 1925, Ōsaka, Japan

Japanese physicist.

In 1956 he became chief physicist of the Sony Corp., and in 1960 he was awarded an IBM fellowship for further research in the U.S., subsequently joining IBM's research laboratories in Yorktown, N.Y. He worked intensively on tunneling in semiconductors and constructed the tunnel diode, which found broad applications in computers and other devices. He shared a 1973 Nobel Prize with Ivar Giaever (b. 1929) and Brian Josephson.

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▪ Japanese physicist
original name  Esaki Reiona  
born March 12, 1925, Ōsaka, Japan

      Japanese solid-state physicist and researcher in superconductivity who shared the Nobel Prize for Physics in 1973 with Ivar Giaever and Brian Josephson.

      Esaki was a 1947 graduate in physics from Tokyo University and immediately joined the Kobe Kogyo company. In 1956 he became chief physicist of the Sony Corporation, where he conducted the experimentation that led to the Nobel Prize. In 1959 he received his Ph.D. from Tokyo University.

      Esaki's work at Sony was in the field of quantum mechanics and concentrated on the phenomenon of tunneling, in which the wavelike character of matter enables electrons to pass through barriers that the laws of classical mechanics say are impenetrable. He devised ways to modify the behaviour of solid-state semiconductors by adding impurities, or “doping” them. This work led to his invention of the double diode, which became known as the Esaki diode. It also opened new possibilities for solid-state developments that his co-recipients of the 1973 prize exploited separately. In 1960 Esaki was awarded an IBM (International Business Machines) fellowship for further research in the United States, and he subsequently joined IBM's research laboratories in Yorktown, N.Y. He retained his Japanese citizenship.

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Universalium. 2010.

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  • Esaki Leo — Leo Esaki (jap. 江崎 玲於奈, Esaki Reona; * 12. März 1925 in Ōsaka) ist ein japanischer Physiker. Bekannt wurde er durch die Erfindung der Esaki Diode. Esaki studierte Physik auf der Universität Tokio und machte 1947 seinen Bachelor of Science, 1959… …   Deutsch Wikipedia

  • Esaki , Leo — (1925–) Japanese physicist Born in the Japanese city of Osaka, Esaki graduated in physics at the University of Tokyo in 1947, gaining his doctorate there in 1959. His doctoral work was on the physics of semiconductors, and in 1958 he reported an… …   Scientists

  • Esaki, Leo — ► (n. 1925) Físico japonés. Fue premio Nobel de Física en 1973, compartido con I. Giaever y B. D. Josephson, por sus estudios sobre el «efecto túnel». * * * orig. Esaki Reiona (12 mar. 1925, Osaka, Japón). Físico japonés. En 1956 fue nombrado… …   Enciclopedia Universal

  • Esaki — Leo …   Scientists

  • Esaki — Esaki, Leo …   Enciclopedia Universal

  • Esaki — Leo Esaki (jap. 江崎 玲於奈, Esaki Reona; * 12. März 1925 in Ōsaka) ist ein japanischer Physiker. Bekannt wurde er durch die Erfindung der Esaki Diode. Esaki studierte Physik auf der Universität Tokio und machte 1947 seinen Bachelor of Science, 1959… …   Deutsch Wikipedia

  • Esaki Reona — Leo Esaki (jap. 江崎 玲於奈, Esaki Reona; * 12. März 1925 in Ōsaka) ist ein japanischer Physiker. Bekannt wurde er durch die Erfindung der Esaki Diode. Esaki studierte Physik auf der Universität Tokio und machte 1947 seinen Bachelor of Science, 1959… …   Deutsch Wikipedia

  • Esaki — Esaki,   Leo, japanischer Physiker, * Ōsaka 12. 3. 1925; 1956 60 bei der Sony Corporation in Tokio, seitdem am Thomas J. Watson Forschungszentrum der Firma IBM in Yorktown Heights (N. Y.) tätig; 1976 92 Mitglied des Direktoriums der IBM Japan,… …   Universal-Lexikon

  • Esaki-Diode — Schaltzeichen Die Tunneldiode, 1957 entdeckt von dem Japaner Leo Esaki – deshalb auch Esaki Diode genannt, ist ein Hochfrequenz Halbleiterbauelement. Inhaltsverzeichnis 1 …   Deutsch Wikipedia

  • Leo — /lee oh/, n., gen. Leonis /lee oh nis/ for 1. 1. Astron. the Lion, a zodiacal constellation between Virgo and Cancer, containing the bright star Regulus. 2. Astrol. a. the fifth sign of the zodiac: the fixed fire sign. See illus. under zodiac. b …   Universalium

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