Theoretical approach to the electronic states and core exciton of superlattice ZnSe/GaAs

Shen, Dingli; Zhang, Kaiming; Fu, Rouli
August 1988
Applied Physics Letters;8/8/1988, Vol. 53 Issue 6, p500
Academic Journal
The energy-band structures of superlattice ZnSe/GaAs(001) are calculated using the semiempirical tight binding method. The fundamental gap and effective mass are studied with the variation of layer thickenss. The appearance of core excitons related to impurities B, Al, and Ga is found to be possible in (ZnSe)5/(GaAs)5, qualitatively consistent with a Ga-bound exciton peak observed in a corresponding heterojunction experiment. It is proposed that interface states would exist at the conduction-band edge of this material.


Related Articles

  • InGaAs/InP superlattice avalanche photodetectors grown by gas source molecular beam epitaxy. Temkin, H.; Panish, M. B.; Chu, S. N. G. // Applied Physics Letters;10/6/1986, Vol. 49 Issue 14, p859 

    Preparation and performance of separate avalanche and multiplication superlattice photodiodes are reported. The absorbing region of these devices consists of up to 100 InGaAs quantum wells separated by InP barriers grown by gas source molecular beam epitaxy. The well size varies from 50 to 20...

  • Magnetoelastic stresses in rare-earth thin films and superlattices. Arnaudas, J. I.; Ciria, M.; de la Fuente, C.; Benito, L.; del Moral, A.; Ward, R. C. C.; Wells, M. R.; Dufour, C.; Dumesnil, K.; Mougin, A. // Low Temperature Physics;Apr2001, Vol. 27 Issue 4, p249 

    A study of the magnetoelastic behavior of some rare-earth based thin films and superlattices (SLs) is reported. Magnetoelastic stress (MS) measurements are made by a cantilever capacitive technique over a wide range of temperatures (10-30 K) and magnetic fields (up to 12 T). Expressions are...

  • Thin film relaxation in cross-sectional transmission electron microscopy specimens of.... Duan, X.F. // Applied Physics Letters;4/24/1995, Vol. 66 Issue 17, p2247 

    Measures the thin film relaxation in cross-sectional specimens of germanium[sub x]silicon[sub 1-x]/silicon strained-layer superlattices. Use of transmission electron microscopy; Usefulness of large-angle convergent-beam electron diffraction pattern; Determination of strain relaxation through...

  • Valence band structure of cubic AlGaN/GaN superlattices. Rodrigues, S. C. P.; Rodrigues, S.C.P.; Scolfaro, L. M. R.; Scolfaro, L.M.R.; Leite, J. R.; Leite, J.R.; Sipahi, G. M.; Sipahi, G.M. // Applied Physics Letters;2/21/2000, Vol. 76 Issue 8 

    The influence of different material parameters, spin-orbit interaction, and strain effects on the valence band structure of cubic AlGaN/GaN superlattices is investigated. One-particle hole state calculations are carried out within the k·p theory by means of a full six-band Luttinger-Kohn...

  • Apparatus for making superlattice Langmuir–Blodgett films with atmosphere and temperature control. Armen, T.; Halperin, K.; Dutta, P.; Ketterson, J. B. // Review of Scientific Instruments;May87, Vol. 58 Issue 5, p822 

    We describe an instrument consisting of two adjacent Langmuir troughs and an apparatus capable of dipping substrates in either trough. Such a capability permits the fabrication of Langmuir–Blodgett multilayer films consisting of two alternating components. The troughs are housed in a...

  • Epitaxial PtFe(001) thin films on MgO(001) with perpendicular magnetic anisotropy. Lairson, B.M.; Visokay, M.R.; Sinclair, R.; Clemens, B.M. // Applied Physics Letters;2/8/1993, Vol. 62 Issue 6, p639 

    Investigates the epitaxial PtFe(001) thin films on MgO(001) with perpendicular magnetic anisotropy. Use of thin-film Pt/Fe and Pt/Co superlattice structures in magneto-optic recording; Composition and amount of epitaxial material formed during the anneal; Preparation of epitaxial layers of the...

  • Strains in HG Te/Hg0.1 Cd0.9 Te superlattices grown on (211)B Cd0.96 Zn0.04 Te substrates. Li, M.; Gall, R.; Becker, C. R.; Gerhard, T.; Faschinger, W.; Landwehr, G. // Journal of Applied Physics;11/15/1997, Vol. 82 Issue 10, p4860 

    Investigates HgTe/Hg0.1Cd0.9Te superlattices grown on (211)B Cd0.96Zn0.04Te substrates. Use of high resolution x-ray diffraction; Strain analysis of partially relaxed epitaxial layers; Strain tensor in thin films.

  • Polarized neutron reflectivity studies of biquadratic coupling in [Fe/Cr] (100) and [Fe/Al] (100) superlattices and films (invited) (abstract). Ankner, J. F.; Schreyer, A.; Zabel, H.; Borchers, J. A.; Majkrzak, C. F.; Schäfer, M.; Wolf, J. A.; Grünberg, P.; Filipkowski, M. E.; Gutierrez, C. J.; Krebs, J. J.; Prinz, G. A. // Journal of Applied Physics;11/15/1994, Vol. 76 Issue 10, p7092 

    Presents an abstract of the study 'Polarized Neuron Reflectivity Studies of Biquadratic Coupling in [Fe/Cr] (100) and [Fe/Al] (100) Superlattices and Films,' by J. F. Ankner, A. Schreyer et al., from a 1994 issue of the 'Journal of Applied Physics.'

  • Apparatus for making A/B superlattice Langmuir–Blodgett films. Lin, B.; Peng, J. B.; Dutta, P.; Ketterson, J. B.; Wong, G. // Review of Scientific Instruments;Dec1988, Vol. 59 Issue 12, p2623 

    We report a modification recently made to a Langmuir–Blodgett superlattice apparatus previously described in this journal. The modification permits the preparation of so-called A/B superlattices consisting of the sequence ABAB···, where A and B are monolayers of two different...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics