Discontinuity of dipole-moment matrix elements in ellipsoidally shaped nanoparticles and profiles of spectral lines

• Autorzy: Kereselidze T. , Tchelidze T. , Devdariani A.

Identyfikatory

DOI

10.1016/j.opelre.2018.02.006

• Języki publikacji: EN

Abstrakty

EN

The behaviour of energy levels and optical spectra of a charged particle (electron or hole) confined within a potential well of ellipsoidal shape is investigated as a function of the shape-anisotropy parameter. If two energy levels of the same symmetry intersect in a perturbation-theory approximation, they move apart on direct diagonalization of the appropriate Hamiltonian. The intersection of the energy levels leads to a discontinuity of the corresponding dipole-moment matrix element. The discontinuity of matrix elements is not reflected in the behaviour of transition probabilities which are continuous functions of the shape-anisotropy parameter. The profiles of a spectral line emitted or absorbed by an ensemble of ellipsoidally shaped nanoparticles with a Gaussian distribution of size are calculated and discussed.

Słowa kluczowe

EN

nanoparticle; ellipsoidal shape; shape-anisotropy parameter; profile of spectral line

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2018
• Tom: Vol. 26, No. 2
• Strony: 134--140
• Opis fizyczny: Bibliogr. 27 poz., wykr.

Twórcy

autor

Kereselidze T.

• Faculty of Exact and Natural Sciences, Tbilisi State University, 1 Chavchavadze Ave., 0179 Tbilisi, Georgia

autor

Tchelidze T.

• Faculty of Exact and Natural Sciences, Tbilisi State University, 1 Chavchavadze Ave., 0179 Tbilisi, Georgia

autor

Devdariani A.

• St. Petersburg State University, 11/2 Lieutenant Schmidt Emb., St. Petersburg 199034, Russia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).