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Anderson, Philip Warren

model magnetic disordered electronic

(1923–95) US physicist: discovered aspects of the electronic structure of magnetic and disordered systems.

Anderson studied at Harvard, doing doctoral research with and spending 1943–45 involved in antenna engineering at the Naval Research Laboratory. Anderson’s career was largely with Bell Telephone Laboratories, but he became professor of physics at Princeton in 1975, and he also held a visiting professorship at Cambridge, UK (1967–75). Under Van Vleck, Anderson worked on pressure broadening of spectroscopic lines. In 1958 he published a paper on electronic states in disordered media, showing that electrons would be confined to regions of limited extent (Anderson localization) rather than be able to move freely. In 1959 he calculated a model explaining ‘superexchange’, the way in which two magnetic atoms may interact via an intervening atom. In 1961 he published important work on the microscopic origin of magnetism in materials. The Anderson model is a quantum mechanical model that describes localized states and their possible transition to freely mobile states. This model has been used widely to study magnetic impurities, superconducting transition temperatures and related problems. Also, during his work on superconductivity and super-fluidity, Anderson worked on the possible super-fluid states of helium-3. For these investigations of electronic properties of materials, particularly magnetic and disordered ones, Anderson shared the 1977 Nobel Prize for physics.

Anderson,T(homas)J(efferson Jr.) [next] [back] Anderson, Michael P.(1959–2003) - Astronaut, Becomes First African American in Space, Perishes in International Tragedy, Chronology

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