Effective mass of the positron in sodium

Majumdar, Chanchal. K. (1966) Effective mass of the positron in sodium Physical Review, 149 (1). pp. 406-408. ISSN 0031-899X

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Official URL: http://prola.aps.org/abstract/PR/v149/i1/p406_1

Related URL: http://dx.doi.org/10.1103/PhysRev.149.406


The band effective mass of the positron in sodium is computed by the standard method of Wigner, Seitz, and Bardeen. The result is m=1.06m, where m is the free-particle mass. Combining it with the results of the many-body calculations of the effective mass of a positron interacting with a Fermi sea of electrons, one can conclude that the theoretical value is much smaller than the experimentally observed effective mass.

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