A theory is developed of the inter band magneto-optical absorption of light in a nanodimensionalquantum well in a strong magnetic field due to interaction electrons with opticalphonons. We study the behavior of the magneto-optical peaks corresponding to the transitionof an electron from the Landau level with quantum numbers n≥3 at magnetic field satisfiedcondition of equality of cyclotron frequency and the frequency of longitudinal optical phonon.For n=3 in point resonance is a cross of four terms of the electron-phonon system (the electronat the Landau level n=3, the electron at the level n=2 and one optical phonon, electron at thelevel n=1 and two phonons and the electron at the level n=0 and three phonons), considered asa function of the cyclotron frequency of the electron. Interaction with phonons takes off thedegeneracy of the terms and leads to four disjoint branches of the electron-phonon spectrum.In accordance with that, the magneto-optical peak splits into four peaks the distance betweenthem is ∼√η (where η is the dimensionless Fröhlich electron-phonon coupling constant).
| Mualliflar | Эшпулатов, Б.Э., Саттарова, М.Н., Султанова, Н. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2024-07-05 |
| Jild | 26 |
| Son | 2 |
| Til | Rus |
| DOI | 10.52304/.v26i2.520 |
DOI: 10.52304/.v26i2.520 · Maqolaning asl sahifasi
магнето оптика, межзонное поглощение света, магнитное поле, квантовая яма, терм, уровень Ландау, оптический фонон, магнето оптический пик, циклотронная частота, magneto-optics, inter band light absorption, nanoscale quantum well, magnetic field, Landau level, optical phonon, magneto-optical peak, cyclotron frequency
The mass-charge spectra of multiply charged ions in a two-element laser plasma are studied bylaser ionization mass-spectrometry. The package of the mass spectrum of the Eu2O3 ions of thelaser plasma was obtained within…
The Faraday effect (EF) of single-crystal of dysprosium orthoaluminate (DyAlO3) was investigatedin the wavelength range 440–750 nm in the visible region of the spectrum at temperaturesof 90 K and 300 K. Magnetic…
Single-crystal films of solid solution Si1-xGex (0<x<1) were grown on Si<111> substrate from atin solution-melt at the temperature in the range of the onset of crystallization Tnc=(800−1050)°С by…
In the paper the catalogs of galaxy clusters are analyzed that have been published based on observationaldata to date. Based on the results of the study, a consolidated catalog was compiledcontaining 213 of the richest…
In the paper, we numerically investigated the effects of the spectral shift in LED emission onthe pumping characteristics of LED-pumped lasers. We aim to illustrate how variations in theblue LED emission spectrum can…
The article presents the results of a photometric study of observational data of a four-componentgravitationally-lensed quasar GRAL J024848.7+191331 observed at the Maidanak Observatory.The light curves of the system as…
A solar laser with an active medium of Ti:Sa/Nd:YAG composite structure has been studiedfor the first time using Monte Carlo photon tracing technique. The results show that the use ofan Nd:YAG active medium in…
The optical absorption and photoluminescence of UPS-923A organic scintillators with a polystyrene base and p-Terphenyl (рTP) and 1,4-Bis(5-phenyloxazolyl benzene (POPOP) additives pTP and POPOP additives, the absorption…
The resource of fast-reading scintillator LuAG:Pr single crystals used in detectors for high-energyphysics is limited by fast neutron fluences ≥1016 cm−2 due to the accumulation of defect color centers.The purpose of…
In this work, the influence of temperatures (300 and 600K) and pressures (1.5 and 10 bar) on the adsorption process of nitrogen atoms by a double-walled carbon nanotube (DWCNT), (5.5+1010) was studied by the molecular…