Leo Esaki

(redirected from Esaki)
Also found in: Dictionary, Thesaurus, Wikipedia.
Related to Esaki: Esaki diode

Esaki, Leo,

1925–, Japanese physicist, Ph.D. Univ. of Tokyo, 1959. Esaki was a researcher with IBM from 1960 until his retirement in 1992. He then served (1992–98) as president of the Univ. of Tsukuba in Japan, and in 2000 accepted a five-year appointment as president of the Shibaura Institute of Technology. Esaki received the 1973 Nobel Prize in Physics, along with Ivar Giaever and Brian Josephson, for his discovery in 1958 of the phenomenon of electron tunnelingtunneling,
quantum-mechanical effect by which a particle can penetrate a barrier into a region of space that would be forbidden by ordinary classical mechanics. Tunneling is a direct result of the wavelike properties of particles; the wave associated with a particle "decays"
..... Click the link for more information.
—in which an electron passes through a narrow region of a solid, where classical theory predicts it could not pass—in semiconductorssemiconductor,
solid material whose electrical conductivity at room temperature is between that of a conductor and that of an insulator (see conduction; insulation). At high temperatures its conductivity approaches that of a metal, and at low temperatures it acts as an insulator.
..... Click the link for more information.
. He exploited this effect to create the tunnel, or Esaki, diode, which has been used in a number of electronics applications, including microwave devices and computers.

Esaki, Leo


Born Mar. 12, 1925, in Osaka. Japanese physicist.

Esaki graduated from Tokyo University in 1947 and was a staff member of the Sony Corporation from 1956 to 1960. In 1960, Esaki emigrated to the United States, where he went to work for International Business Machines Corporation.

Esaki’s principal works deal with solid-state physics, particularly the tunnel effect in semiconductors. In 1957 he invented the tunnel diode, for which he was awarded a Nobel Prize in 1973. Esaki was the first to produce a superlattice.


“A New Phenomenon in Narrow Germanium p-n Junctions.” Physical Review, 1958, vol. 109, no. 2.
“Long Journey Into Tunnelling.” Reviews of Modern Physics, 1974, vol. 46, no. 2.
References in periodicals archive ?
Editors Razeghi, Esaki, Klitzing, all with doctorates in physics, the latter two having won the Nobel Prize, along with numerous expert contributors, present a massive and comprehensive volume that offers a very broad coverage of the growing nanotech field.
Esaki tunnel diodes, discovered in 1957 and the first quantum devices, were used to create a map showing output tunnel currents for a given set of material systems and parameters.
Polhemus (2010) described a new genus, Bacillometroides, for three species previously assigned to Bacillometra Esaki, 1927 leaving the genus monotypic for B.
Losev invented the first ever tunnel diode, called crystadine at that time, and in 1973 Leo Esaki, Ivar Giaever and Brian David Josephson received the Nobel Prize for it [13].
The company chief financial officer, Tim Esaki, said, 'MLP's (the company) first quarter results reflect continued progress as we work through the transition of our operations and focus our efforts on managing and developing our land holdings here on Maui.
DPJ's Esaki sold 2,000 tickets for 300-capacity fundraising party
Tokyo's three-star Japanese restaurants are Araki, Esaki, Hamadaya, Ishikawa, Kanda, Koju, 7chome Kyobashi, Sukiyabashi Jiro Honten, Sushi Mizutani, Sushi Saito, Usukifugu Yamadaya and Yukimura.
At Yamaha we are known for our unique heritage of artisanship and technological know-how, and our partnership with DivX to enhance our video playback capabilities reflects that commitment to excellence," said Shuichi Esaki, AV Technology Development Department Manager, Yamaha.