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Ivar Giaever
Ivar Giaever (/ˈjeɪvər/ YAY-ver; Norwegian: Ivar Giæver, pronounced [ˈîːvɑr ˈjæːvər]; April 5, 1929 – June 20, 2025) was a Norwegian–American experimental physicist who shared the 1973 Nobel Prize in Physics with Leo Esaki and Brian Josephson. One half of the prize was jointly awarded to Esaki and Giaever "for their experimental discoveries regarding tunneling phenomena in semiconductors and superconductors, respectively".
Ivar Giaever was born on April 5, 1929, in Bergen, Norway. He studied mechanical engineering at the Norwegian Institute of Technology, graduating with an M.Eng. in 1952. In 1954, he emigrated to Canada, where he was employed by the Canadian division of General Electric. He then moved to the United States in 1958, joining General Electric's Corporate Research and Development Center in Schenectady, New York. In 1964, he received his Ph.D. from Rensselaer Polytechnic Institute and became a naturalized US citizen. In 1988, he left General Electric to become a professor at the Polytechnic Institute. In addition, he also became a professor at the University of Oslo, sponsored by Statoil.
Giaever's research later in his career was mainly in the field of biophysics. In 1969, he studied biophysics for a year at the University of Cambridge through a Guggenheim Fellowship. He continued to work in this area after he returned to the US, founding the company Applied BioPhysics, Inc. in 1993.
The work that led to Giaever's Nobel Prize was performed at General Electric in 1960. Following on Esaki's discovery of electron tunneling in semiconductors in 1958, Giaever showed that tunnelling also took place in superconductors, demonstrating tunneling through a very thin layer of oxide surrounded on both sides by metal in a superconducting or normal state. Giaever's experiments demonstrated the existence of an energy gap in superconductors, one of the most important predictions of the BCS theory of superconductivity, which had been developed in 1957. Giaever's experimental demonstration of tunnelling in superconductors stimulated the theoretical physicist Brian Josephson to work on the phenomenon, leading to his prediction of the Josephson effect in 1962. Esaki and Giaever shared half of the 1973 Nobel Prize in Physics, and Josephson received the other half.
Giaever had co-signed a letter from over 70 Nobel laureate scientists to the Louisiana State Legislature supporting the repeal of the Louisiana Science Education Act.
In addition to the Nobel Prize, Giaever was also awarded the Oliver E. Buckley Prize of the American Physical Society in 1965, the Golden Plate Award of the American Academy of Achievement in 1966, and the Zworykin Award of the National Academy of Engineering in 1974.
In 1985, Giaever was awarded an honorary degree, doctor honoris causa, at the Norwegian Institute of Technology, later part of Norwegian University of Science and Technology.
Giaever was a Member of the Norwegian Academy of Science and Letters.
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Ivar Giaever
Ivar Giaever (/ˈjeɪvər/ YAY-ver; Norwegian: Ivar Giæver, pronounced [ˈîːvɑr ˈjæːvər]; April 5, 1929 – June 20, 2025) was a Norwegian–American experimental physicist who shared the 1973 Nobel Prize in Physics with Leo Esaki and Brian Josephson. One half of the prize was jointly awarded to Esaki and Giaever "for their experimental discoveries regarding tunneling phenomena in semiconductors and superconductors, respectively".
Ivar Giaever was born on April 5, 1929, in Bergen, Norway. He studied mechanical engineering at the Norwegian Institute of Technology, graduating with an M.Eng. in 1952. In 1954, he emigrated to Canada, where he was employed by the Canadian division of General Electric. He then moved to the United States in 1958, joining General Electric's Corporate Research and Development Center in Schenectady, New York. In 1964, he received his Ph.D. from Rensselaer Polytechnic Institute and became a naturalized US citizen. In 1988, he left General Electric to become a professor at the Polytechnic Institute. In addition, he also became a professor at the University of Oslo, sponsored by Statoil.
Giaever's research later in his career was mainly in the field of biophysics. In 1969, he studied biophysics for a year at the University of Cambridge through a Guggenheim Fellowship. He continued to work in this area after he returned to the US, founding the company Applied BioPhysics, Inc. in 1993.
The work that led to Giaever's Nobel Prize was performed at General Electric in 1960. Following on Esaki's discovery of electron tunneling in semiconductors in 1958, Giaever showed that tunnelling also took place in superconductors, demonstrating tunneling through a very thin layer of oxide surrounded on both sides by metal in a superconducting or normal state. Giaever's experiments demonstrated the existence of an energy gap in superconductors, one of the most important predictions of the BCS theory of superconductivity, which had been developed in 1957. Giaever's experimental demonstration of tunnelling in superconductors stimulated the theoretical physicist Brian Josephson to work on the phenomenon, leading to his prediction of the Josephson effect in 1962. Esaki and Giaever shared half of the 1973 Nobel Prize in Physics, and Josephson received the other half.
Giaever had co-signed a letter from over 70 Nobel laureate scientists to the Louisiana State Legislature supporting the repeal of the Louisiana Science Education Act.
In addition to the Nobel Prize, Giaever was also awarded the Oliver E. Buckley Prize of the American Physical Society in 1965, the Golden Plate Award of the American Academy of Achievement in 1966, and the Zworykin Award of the National Academy of Engineering in 1974.
In 1985, Giaever was awarded an honorary degree, doctor honoris causa, at the Norwegian Institute of Technology, later part of Norwegian University of Science and Technology.
Giaever was a Member of the Norwegian Academy of Science and Letters.
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