John Rowell
John Rowell (born June 27, 1935 in Linslade , Bedfordshire ) is a British physicist, known for research on superconductivity .
Life
Rowell studied physics at Oxford University with a bachelor's degree in 1957 (as an engineer), a master's degree in physics in 1961 and a doctorate in 1961 on the metal-insulator transition in germanium . From 1961 he was at Bell Laboratories , where he was head of department in 1969 and director of the laboratory for chemical physics in 1981. From 1983 to 1989 he was Assistant Vice President at Bellcore (Bell Communications Research) for solid state research and technology. There he led research on materials science, optoelectronics, optical switches, fast electronics and high temperature superconductors.
In 1989, he switched to industry and became Chief Technological Officer at Conductus Inc., a superconductor startup. He was its President in 1991 and President of its Scientific Advisory Board from 1991 to 1996. From 1995 he worked as a consultant for his own company (John Rowell Inc.) in the field of superconductors. In 1997 he became a Materials Institute Professor at Northwestern University and since 2008 he has been a Research Professor at Arizona State University .
plant
Rowell was the first in December 1962 to demonstrate the Josephson effect experimentally at Bell Labs. Brian Josephson was a student of Philip Warren Anderson at Cambridge, but derived the effect purely theoretically. Upon returning to Bell Labs, Anderson suggested Rowell for an experimental review. Rowell was the first to discover the sensitivity of the effect to magnetic fields and held the first patent for applications of the Josephson effect in logic circuits.
With J. Geerk, M. Gurvitch and M. Washington, he invented Josephson compounds from a three-layer niobium / aluminum structure, which became the basis for superconducting electronics and magnetic sensors.
In the 1960s he and William L. McMillan at Bell Labs determined the phonon spectra of superconductors from the tunnel data of electrons. The work established the tunnel spectroscopy of superconductors.
Honors, memberships, private matters
He is a member of the National Academy of Sciences (1994) and the National Academy of Engineering (1995). He is a Fellow of the American Physical Society and the Royal Society (1989). In 1978 he received the Fritz London Memorial Award with McMillan . In 1975 he was visiting professor at Stanford University .
He has been married since 1959 and has three children.
Fonts
- with McMillan Lead phonon spectrum calculated from superconducting density of states , Phys. Rev. Lett., Vol. 14, 1964, pp. 108-112
- with McMilland Tunneling and strong coupling superconductivity , in RD Parks (Ed.) Superconductivity , New York, Dekker, 1969, pp. 561-613
Web links
Individual evidence
- ↑ Anderson How Josephson discovered his effect , Physics Today, November 1970, p. 23, pdf ( Memento of the original from June 7, 2011 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Anderson, Rowell Probable Observation of the Josephson Superconducting Tunneling Effect , Phys. Rev. Lett., Vol. 10, 1963, pp. 230-232, abstract
- ^ Rowell Magnetic Field Dependence of the Josephson Tunnel Current , Phys. Rev. Lett., Vol. 11, 1963, pp. 200-202, abstract
| personal data | |
|---|---|
| SURNAME | Rowell, John |
| BRIEF DESCRIPTION | British physicist |
| DATE OF BIRTH | June 27, 1935 |
| PLACE OF BIRTH | Lens drawer |