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Author | Hao, Y.L.; Djotyan, A.P.; Avetisyan, A.A.; Peeters, F.M. | ||||
Title | D- shallow donor near a semiconductor-metal and a semiconductor-dielectric interface | Type | A1 Journal article | ||
Year | 2011 | Publication | Journal of physics : condensed matter | Abbreviated Journal | J Phys-Condens Mat |
Volume | 23 | Issue | 11 | Pages | 115303,1-115313,9 |
Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
Abstract | The ground state energy and the extent of the wavefunction of a negatively charged donor (D − ) located near a semiconductormetal or a semiconductordielectric interface are obtained. We apply the effective mass approximation and use a variational two-electron wavefunction that takes into account the influence of all image charges that arise due to the presence of the interface, as well as the correlation between the two electrons bound to the donor. For a semiconductormetal interface, the D − binding energy is enhanced for donor positions d > 1.5aB (aB is the effective Bohr radius) due to the additional attraction of the electrons with their images. When the donor approaches the interface (i.e. d < 1.5aB) the D − binding energy drops and eventually it becomes unbound. For a semiconductordielectric (or a semiconductorvacuum) interface the D − binding energy is reduced for any donor position as compared to the bulk case and the system becomes rapidly unbound when the donor approaches the interface. | ||||
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Corporate Author | Thesis | ||||
Publisher | Place of Publication | London | Editor | ||
Language | Wos | 000287969200013 | Publication Date | 2011-03-04 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0953-8984;1361-648X; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.649 | Times cited | 5 | Open Access | |
Notes | ; This work was supported by the Belgian Science Policy (IAP) and the Brazilian Science Foundation CNPq. One of us (AAA) was supported by a fellowship from the Belgian Federal Science Policy Office (IAP). ; | Approved | Most recent IF: 2.649; 2011 IF: 2.546 | ||
Call Number | UA @ lucian @ c:irua:88828 | Serial | 3528 | ||
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