Now showing items 1-14 of 14

    • Characteristic equations for the lasing Modes of infinite periodic chain of quantum wires 

      Byelobrov V.O.; Benson, T.M.; Altintas, A.; Nosich, A.I. (2008)
      In this paper, we study the lasing modes of a periodic open optical resonator. The resonator is an infinite chain of active circular cylindrical quantum wires standing in tree space. Characteristic equations for the ...
    • Confined optical phonon effects on the band gap renormalization in quantum wire structures 

      Bennett, C. R.; Güven, K.; Tanatar, B. (Elsevier Science, 1999)
      We consider the different approximations for the bandgap renormalization (BGR) within the random phase approximation (RPA), the quasi-static limit and the plasmon-pole approximation, and compare with the full result. We ...
    • Coulomb drag effect in parallel cylindrical quantum wires 

      Tanatar, B. (Pergamon Press, 1996)
      We study the Coulomb drag rate for electrons in two parallel quantum wires. The double-quantum wire structure is modeled for a GaAs material with cylindrical wires having infinite potential barriers. The momentum transfer ...
    • Dynamical screening effects in hot-electron scattering from electron-hole plasma and LO-phonon modes in quantum wires 

      Bennett, C. R.; Tanatar, B.; Constantinou, N. C. (Elsevier, 1996)
      We present a fully dynamical and finite temperature study of the hot-electron momentum relaxation rate and the power loss in a coupled system of electron-hole plasma and bulk LO-phonons in a quantum wire structure. ...
    • Exchange-correlation effects in the impurity-limited mobility of GaAs quantum wires 

      Tanatar, B. (Sci Tech Res Counc Turkey, Ankara, Turkey, 1999)
      We study the many-body effects described by the local-field corrections on the mobility of quasi-one dimensional electron systems. The low temperature mobility due to remote-impurity doping and interface-roughness scattering ...
    • Hartree-Fock approximation of bipolaron state in quantum dots and wires 

      Senger, R. T.; Kozal, B.; Chatterjee, A.; Erçelebi, A. (Springer, 2010)
      The bipolaronic ground state of two electrons in a spherical quantum dot or a quantum wire with parabolic boundaries is studied in the strong electron-phonon coupling regime. We introduce a variational wave function that ...
    • Lasing modes of infinite periodic chain of quantum wires 

      Byelobrov V.O.; Benson, T.M.; Sewell P.; Altintas, A.; Nosich, A.I. (2009)
      In this paper, we study the scattering and eigenvalue problems for a periodic open optical resonator that is an infinite chain of active circular cylindrical quantum wires standing in free space. The scattering problem is ...
    • Nonradiative energy transfer in colloidal CdSe nanoplatelet films 

      Güzeltürk, B.; Olutas M.; Delikanlı, S.; Keleştemur, Y.; Erdem, O.; Demir, H. V. (Royal Society of Chemistry, 2015)
      Nonradiative energy transfer (NRET) has been extensively studied in colloidal nanocrystal (quantum dots) and nanorod (quantum wires) assemblies. In this work, we present the first account of spectroscopic evidence of NRET ...
    • Operation of a novel hot electron vertical cavity surface emitting laser 

      Balkan, N.; O'Brien-Davies, A.; Thoms, A. B.; Potter, R. J.; Poolton, N.; Adams, M. J.; Masum J.; Bek, A.; Serpenguzel, A.; Aydinli, A.; Roberts J. S. (SPIE - The International Society for Optical Engineering, 1998-01)
      The hot Electron Light Emission and Lasing in Semiconductor Heterostructures devices (HELLISH-1) is novel surface emitter consisting of a GaAs quantum well, within the depletion region, on the n side of Ga 1-xAlxAs p- n ...
    • Phonon confinement and screening effects on the polaron energy in quantum wires 

      Tanatar, B.; Guven, K. (Institute of Physics Publishing Ltd., 1995)
      We study the contribution of confined phonons to the polaron energy in quantum-well wires. We use a dispersionless, macroscopic continuum model to describe the phonon confinement in quantum wires of square cross section. ...
    • Raman scattering from confined phonons in GaAs/AlGaAs quantum wires 

      Bairamov, B. H.; Aydinli, A.; Tanatar, B.; Güven, K.; Gurevich, S.; Mel'tser, B. Ya.; Ivanov, S. V.; Kop'ev, P. S.; Smirnitskii, V. B.; Timofeev, F. N. (Academic Press, 1998)
      We report on photoluminescence and Raman scattering performed at low temperature (T = 10 K) on GaAs/Al 0.3Ga 0.7As quantum-well wires with effective wire widths of L = 100.0 and 10.9 nm prepared by molecular beam epitaxial ...
    • Short-range correlations in coupled quantum-wire systems 

      Yurtsever, A.; Tanatar, B. (2002)
      We study the contact values of the inter-wire pair-correlation function in electron-electron and electron-hole double-wire systems. For this purpose the ladder approximation as generalized to multicomponent systems is used. ...
    • Spin correlations in a quasi-one-dimensional electron gas 

      Tanatar, B. (Elsevier BV, 1996)
      We study the spin correlations in a quasi-one-dimensional electron gas within the self-consistent-field approximation (SCFA). Electrons confined in a parabolic potential restricted to have free motion in one space dimension, ...
    • Strong coupling characterisation of quasi-1D polarons in cylindrical QW-wires 

      Erçelebi, A.; Senger, R. T. (Pergamon Press, 1996)
      We retrieve, within the strong-coupling theory, the quasi-one dimensional analog of the standard optical polaron relevant to a cylindrical quantum well wire. Under the assumption of perfect confinement the ground state ...