Polarographic studies with the dropping mercury kathode. Part LXXVI. The estimation of cadmium in zinc-blende

Zinc-blende Mn1−xMnxTe - A new diluted magnetic semiconductor system

Journal of Crystal Growth ◽

10.1016/s0022-0248(97)00800-2 ◽

1998 ◽

Vol 184-185 (1-2) ◽

pp. 976-979

Author(s):

E Janik

Keyword(s):

Diluted Magnetic Semiconductor ◽

Magnetic Semiconductor ◽

Zinc Blende ◽

Semiconductor System ◽

Diluted Magnetic

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Manifestation of defects in phonon spectra of binary zinc-blende compounds

The European Physical Journal Applied Physics ◽

10.1051/epjap:2004078 ◽

2004 ◽

Vol 27 (1-3) ◽

pp. 321-324 ◽

Cited By ~ 2

Author(s):

J. Polit ◽

E. M. Sheregii ◽

J. Cebulski ◽

M. Pociask ◽

A. Kisiel ◽

...

Keyword(s):

Zinc Blende ◽

Phonon Spectra

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EXCITON INSULATOR STATES IN MATERIALS WITH â€˜MEXICAN HATâ€™ BAND STRUCTURE DISPERSION AND IN GRAPHENE

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v11i1.6947 ◽

2015 ◽

Vol 11 (1) ◽

pp. 2927-2949

Author(s):

Lyubov E. Lokot

Keyword(s):

Band Structure ◽

Three Dimensional ◽

Dimensional Sphere ◽

Electron Hole ◽

Dinger Equation ◽

Fermi Sphere ◽

Zinc Blende ◽

Bulk Gan ◽

Structure Dispersion ◽

Excitonic States

In the paper a theoretical study the both the quantized energies of excitonic states and their wave functions in grapheneand in materials with "Mexican hat" band structure dispersion as well as in zinc-blende GaN is presented. An integral twodimensionalSchrÃ¶dinger equation of the electron-hole pairing for a particles with electron-hole symmetry of reflection isexactly solved. The solutions of SchrÃ¶dinger equation in momentum space in studied materials by projection the twodimensionalspace of momentum on the three-dimensional sphere are found exactly. We analytically solve an integral twodimensionalSchrÃ¶dinger equation of the electron-hole pairing for particles with electron-hole symmetry of reflection. Instudied materials the electron-hole pairing leads to the exciton insulator states. Quantized spectral series and lightabsorption rates of the excitonic states which distribute in valence cone are found exactly. If the electron and hole areseparated, their energy is higher than if they are paired. The particle-hole symmetry of Dirac equation of layered materialsallows perfect pairing between electron Fermi sphere and hole Fermi sphere in the valence cone and conduction cone andhence driving the Cooper instability. The solutions of Coulomb problem of electron-hole pair does not depend from a widthof band gap of graphene. It means the absolute compliance with the cyclic geometry of diagrams at justification of theequation of motion for a microscopic dipole of graphene where >1 s r . The absorption spectrums for the zinc-blendeGaN/(Al,Ga)N quantum well as well as for the zinc-blende bulk GaN are presented. Comparison with availableexperimental data shows good agreement.

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