TITLE

Asymmetric AlAsSb/InAs/CdMgSe quantum wells grown by molecular-beam epitaxy

AUTHOR(S)
Ivanov, S. V.; Lyublinskaya, O. G.; Vasilyev, Yu B.; Kaygorodov, V. A.; Soroki, S. V.; Sedova, I. V.; Solov'ev, V. A.; Meltser, B. Ya.; Sitnikova, A. A.; L'vova, T. V.; Berkovits, V. L.; Toropov, A. A.; Kop'ev, P. S.
PUB. DATE
June 2004
SOURCE
Applied Physics Letters;6/7/2004, Vol. 84 Issue 23, p4777
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Asymmetric (6.7–300)-nm-thick InAs quantum wells (QWs) confined between AlAsSb and CdMgSe barriers have been fabricated by molecular-beam epitaxy. A special procedure of the CdMgSe-on-InAs growth initiation, exploiting an ex situ S passivation of InAs and in situ deposition of an ultrathin ZnTe buffer layer, results in the fabrication of high quality structures with a density of extended defects below 106 cm2. QW photoluminescence studies demonstrate a confinement effect and confirm the type I band alignment at the heterovalent InAs/CdMgSe interface mediated by the ZnTe interlayer. Observation of Shubnikov de Haas oscillations of magnetoresistance for an asymmetric 19-nm-thick InAs QW indicates an existence of the two-dimensional electron gas with the low-temperature sheet electron density of 1.3×1012 cm-2 and the mobility as high as ∼10 000 cm2/V s. © 2004 American Institute of Physics.
ACCESSION #
13203693

 

Related Articles

  • Weakly relativistic and ponderomotive effects on the density steepening in the interaction of an intense laser pulse with an underdense plasma. Niknam, A. R.; Hashemzadeh, M.; Shokri, B. // Physics of Plasmas;Mar2009, Vol. 16 Issue 3, p033105 

    The effect of the weakly relativistic ponderomotive force in the interaction of an intense laser pulse with an underdense plasma is studied. This force modifies the electron density distribution. Furthermore, the existence of intense laser pulses in plasma causes the electron relativistic mass...

  • Coherent Oscillatory Spin-Dynamics in High-Mobility 2D Electron Gases. Leyland, W. J. H.; Harley, R. T.; Henini, M.; Shields, A. J.; Ritchie, D. A. // AIP Conference Proceedings;2007, Vol. 893 Issue 1, p1297 

    Measurements of electron spin dynamics at low temperatures (T<5K) in a series of high mobility 2D electron gases in modulation doped GaAs/AlGaAs quantum wells show damped coherent oscillations. The frequency corresponds to the conduction band spin-splitting at the Fermi energy and the damping is...

  • Features of quantum effects in two-dimensional GaAs/n-InGaAs/GaAs structures with double quantum wells. Arapov, Yu. G.; Yakunin, M. V.; Gudina, S. V.; Karskanov, I. V.; Neverov, V. N.; Harus, G. I.; Shelushinina, N. G.; Podgornykh, S. M.; Zvonkov, V. N.; Uskova, E. A. // Low Temperature Physics;Feb2007, Vol. 33 Issue 2/3, p156 

    In an n-InxGa1-xAs/GaAs double quantum well (x≈0.2) the temperature dependence of the longitudinal resistance ρxx(T) of a 2D electron gas with low mobility and with an electron density close to the B=0 metal–insulator transition is of an “insulator” character in the...

  • Spin splitting in SiGe/Si heterostructures. Nestoklon, M. O.; Golub, L. E.; Ivchenko, E. L. // AIP Conference Proceedings;2007, Vol. 893 Issue 1, p387 

    Spin and valley-orbit splittings are calculated in symmetric SiGe/Si/SiGe quantum wells (QWs) by using the tight-binding approach. In accordance with the symmetry considerations an existence of spin splitting of electronic states in perfect QWs with an odd number of Si atomic planes is...

  • Single-particle relaxation time of the two-dimensional electron gas in Si/SiGe: Many-body effects. Gold, A. // JETP Letters;Jun2011, Vol. 93 Issue 8, p453 

    The single-particle relaxation time of the two-dimensional electron gas in SiGe/Si/SiGe quantum wells is calculated. Many-body effects beyond the random-phase approximation become important at low electron density. For charged impurity scattering (remote doped), the importance of these many-body...

  • Oscillations of the collisionless sheath at grazing incidence of the magnetic field. Shoucri, M.; Gerhauser, H.; Finken, K. H. // Physics of Plasmas;Oct2009, Vol. 16 Issue 10, p103506 

    An Eulerian Vlasov code is used to study the physics of a collisionless sheath with grazing angles of incidence of the magnetic field. The electrons are treated with a parallel-B kinetic equation. In the case where the ion gyroradius is large compared to the Debye length, the electrons, frozen...

  • Heat transport in the quasi-single-helicity islands of EXTRAP T2R. Frassinetti, L.; Brunsell, P. R.; Drake, J. // Physics of Plasmas;Mar2009, Vol. 16 Issue 3, p032503 

    The heat transport inside the magnetic island generated in a quasi-single-helicity regime of a reversed-field pinch device is studied by using a numerical code that simulates the electron temperature and the soft x-ray emissivity. The heat diffusivity χe inside the island is determined by...

  • Thermoelectric power in carbon nanotubes and quantum wires of nonlinear optical, optoelectronic, and related materials under strong magnetic field: Simplified theory and relative comparison. Ghatak, K. P.; Bhattacharya, S.; Bhowmik, S.; Benedictus, R.; Choudhury, S. // Journal of Applied Physics;Feb2008, Vol. 103 Issue 3, p034303 

    We study thermoelectric power under strong magnetic field (TPM) in carbon nanotubes (CNTs) and quantum wires (QWs) of nonlinear optical, optoelectronic, and related materials. The corresponding results for QWs of III-V, ternary, and quaternary compounds form a special case of our generalized...

  • Terahertz emission by quantum beating in a modulation doped parabolic quantum well. Bell, L.; Rogers, J.; Heyman, J. N.; Zimmerman, J. D.; Gossard, A. C. // Applied Physics Letters;4/7/2008, Vol. 92 Issue 14, p142108 

    We use ultrafast terahertz spectroscopy to observe terahertz-frequency electron oscillations in a modulation-doped InGaAs/AlGaAs parabolic quantum well with subband spacing 0.01 eV. Our study examined how the extrinsic electron density in the well influences terahertz emission efficiency and we...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics