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Electronic miniband formation in a two-dimensional semiconductor superlattice

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
We investigate a system of periodically arranged uniform rods, regarded as a two -dimensional superlattice. The assumed arrangement of rods within a supercell allows to express the two-dimensional effective potential as a sum of two terms depending on either x or y coordinate only. The structure consist of two square lattices of square rods embedded in the matrix material. Rods in one lattice act as potential barriers for electrons, and those in the other as potential wells. The separation of the effective potential is shown not to imply Hamiltonian separation in the envelope function approximation. The energy spectra of the conduction band are computed for the numerical solution as well as for the analytical one, the latter wrongly assuming the separation of the Hamiltonian. The band structures computed in the two cases differ in band position and width.
Rocznik
Strony
965--970
Opis fizyczny
Bibliogr. 11 poz., rys.
Twórcy
autor
  • Surface Physics Division, Faculty of Physics, Adam Mickiewicz University ul. Umultowska 85, 61-614 Poznań, Poland
autor
Bibliografia
  • [1] GREEN M.A.,Physica E, 14 (2002), 65.
  • [2] NOZIK A.J., Physica E, 14 (2002), 115.
  • [3] BROWN A.S.,GREEN M.A.,CORKISH R.P., Physica E, 14 (2002), 121.
  • [4] BOCKELMANN U.,BASTARD G.,Phys. Rev. B, 42 (1990), 8947.
  • [5] BENISTY H., Phys. Rev. B, 51 (1995), 13281.
  • [6] ROSS R.T.,NOZIK A.J.,J. Appl. Phys., 53 (1982), 3813.
  • [7] WÜRFEL P., Solar Energ. Mater. Solar Cells, 46 (1997), 43.
  • [8] JIANG C.-W.,GREEN M.A.,J. Appl. Phys., 99 (2006), 114902.
  • [9] LAZARENKOVA O.L.,BALANDIN A.A., J. Appl. Phys., 89 (2001), 5509.
  • [10] BENDANIEL D.J.,DUKE C.B.,Phys. Rev., 152 (1966), 683.
  • [11] BASTARD G., Wave mechanics applied to the semiconductor heterostructures, Wiley, 1991.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-c1f4bfdd-f790-47bb-8107-df78a6ea1ea6
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