Negative-donor centers in two dimensions

A variational calculation of the bound states of negative-donor centers D- in two dimensions is presented; exchange and correlation effects are included using a Chandrasekhar-type trial wave function. At zero magnetic field, a binding energy of 0.45 Ry* is obtained for the singlet ground state, eigh...

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Detalles Bibliográficos
Autor principal: Sandler, Nancy Patricia
Publicado: 1992
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v46_n12_p7707_Sandler
http://hdl.handle.net/20.500.12110/paper_01631829_v46_n12_p7707_Sandler
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Sumario:A variational calculation of the bound states of negative-donor centers D- in two dimensions is presented; exchange and correlation effects are included using a Chandrasekhar-type trial wave function. At zero magnetic field, a binding energy of 0.45 Ry* is obtained for the singlet ground state, eight times larger than the corresponding value in three dimensions. At very small, but finite magnetic fields, a second (triplet) state becomes bounded. © 1992 The American Physical Society.