Zobrazeno 1 - 10
of 50
pro vyhledávání: '"O.M. Voitsekhivska"'
Publikováno v:
Condensed Matter Physics, Vol 24, Iss 1, p 13705 (2021)
Within unitary transformed Hamiltonian of Fröhlich type, using the Green's functions method, exact renormalized energy spectrum of quasiparticle strongly interacting with two-mode polarization phonons is obtained at T=0 K in a model of the system wi
Externí odkaz:
https://doaj.org/article/50cd871dcd004675996358066de16d45
Publikováno v:
Condensed Matter Physics, Vol 22, Iss 3, p 33703 (2019)
The theory of renormalized energy spectrum of a multi-level quasiparticle interacting with polarization phonons at T = 0 K is developed within the Feynman-Pines diagram technique in a new approach. It permits a successive separation of multiplicative
Externí odkaz:
https://doaj.org/article/e84e99144ee64e0d8b1bb279660b630e
Publikováno v:
Condensed Matter Physics, Vol 21, Iss 4, p 43703 (2018)
Theory of the spectrum of localized two-level quasi-particle renormalized due to interaction with polarization phonons at cryogenic temperature is developed using the generalized method of Feynman-Pines diagram technique. Using the procedure of parti
Externí odkaz:
https://doaj.org/article/4f1f497f5c5643efae9158cdd1f77b7a
Publikováno v:
Condensed Matter Physics, Vol 21, Iss 1, p 13703 (2018)
The effect of a constant electric field and donor impurity on the energies and oscillator strengths of electron intraband quantum transitions in double-well spherical quantum dot GaAs/Al_xGa_{1-x}As/GaAs is researched. The problem is solved in the fr
Externí odkaz:
https://doaj.org/article/1c86b2328f1543388affae5585d7c86f
Publikováno v:
Condensed Matter Physics, Vol 20, Iss 4, p 43706 (2017)
The theory of renormalized energy spectrum of localized quasi-particle interacting with polarization phonons at finite temperature is developed within the Feynman-Pines diagram technique. The created computer program effectively takes into account mu
Externí odkaz:
https://doaj.org/article/da6f6fa85e4c49959cc52914385676ef
Publikováno v:
Condensed Matter Physics, Vol 19, Iss 4, p 43701 (2016)
Using the Feynman-Pines diagram technique, the energy spectrum of localized quasi-particles interacting with polarization phonons is calculated and analyzed in the wide range of energies at the finite temperature of the system. It is established that
Externí odkaz:
https://doaj.org/article/a8e131295c744ae78c26ea93980afb39
Publikováno v:
Condensed Matter Physics, Vol 18, Iss 3, p 33707 (2015)
The partial summing of infinite range of diagrams for the two-phonon mass operator of polaron described by Frohlich Hamiltonian is performed using the Feynman-Pines diagram technique. The renormalized spectral parameters of ground and first excited (
Externí odkaz:
https://doaj.org/article/37449f35944b43f89f663b9831b5d0e6
Publikováno v:
Condensed Matter Physics, Vol 17, Iss 2, p 23704 (2014)
The Hamiltonian of electrons interacting with interface phonons in three-barrier resonant tunneling structure is established using the first principles within the models of effective mass and polarization continuum. Using the Green's functions method
Externí odkaz:
https://doaj.org/article/53fab262fa134ec8bbc61ffb8406a08d
Publikováno v:
Condensed Matter Physics, Vol 16, Iss 3, p 33701 (2013)
Using the effective mass and rectangular potential approximations, the theory of electron dynamic conductivity is developed for the plane multilayer resonance tunnel structure placed into a constant electric field within the model of open nanosystem,
Externí odkaz:
https://doaj.org/article/c097872afb614f8ea3d16ad65ab1fdfe
Publikováno v:
Condensed Matter Physics, Vol 15, Iss 3, p 33704 (2012)
The theory of exciton spectrum in multi-shell hexagonal semiconductor nanotube is developed within the effective masses and rectangular potentials approximations using the method of effective potential. It is shown that the exciton binding energy for
Externí odkaz:
https://doaj.org/article/3b4e3b2cb8cf42a3a7a3f34101f74012