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Papers by Author: I.A. Buyanova

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Prospects of Potential Semiconductor Spin Detectors

Authors: W.M. Chen, I.A. Buyanova, Y. Oka, C.R. Abernathy, Stephen J. Pearton

Abstract: We review our recent experimental findings by optical orientation spectroscopy that show efficient spin relaxation within semiconductor spin detectors to be an important factor limiting efficiency of spin injection in spin light-emitting structures based on ZnCdSe/ZnMnSe and InGaN/GaMnN. We provide evidence for the physical mechanism responsible for the observed efficient spin relaxation that accompanies momentum and energy relaxation of excitons/carriers. These findings call for increasing efforts in suppressing spin relaxation in spin detectors.

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Formation of Ferromagnetic SiC:Mn Phases

Authors: Mikael Syväjärvi, L. Nasi, Gholam Reza Yazdi, Giancarlo Salviati, M. Izadifard, I.A. Buyanova, W.M. Chen, Rositza Yakimova

Abstract: Ferromagnetic phases in as-grown SiC have been studied. An interpretation about the formation based on details of the phase appearance in the layers from optical microscopy, AFM, and TEM investigations is related to the growth. Some phases were found to have a nucleation at the edge of the phase and detailed TEM investigations show that the phases have an increased grain density at the edge while the main part of the phase is monocrystalline.

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As-Grown 4H-SiC Epilayers with Magnetic Properties

Authors: Mikael Syväjärvi, V. Stanciu, M. Izadifard, W.M. Chen, I.A. Buyanova, P. Svedlindh, Rositza Yakimova

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Room Temperature Photoluminescence Linewidth versus Material Quality of GaN

Authors: Bo Monemar, I.A. Buyanova, Peder Bergman, Hiroshi Amano, Isamu Akasaki

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Intrinsic Modulation Doping in InP-Based Heterostructures

Authors: W.M. Chen, I.A. Buyanova, W.G. Bi, C.W. Tu

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The Role of Non-Radiative Defects in Thermal Quenching of Luminescence in SiGe/Si Structures Grown by Molecular Beam Epitaxy

Authors: I.A. Buyanova, W.M. Chen, G.R. Pozina, Bo Monemar, W.X. Ni, G.V. Hansson

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SF₆/0₂ and CF₄/0₂ Reactive-Ion-Etching-Induced Defects in Silicon Studied by Photoluminescence Spectroscopy: Role of Oxygen

Authors: I.A. Buyanova, Anne Henry, Bo Monemar, J. Lennart Lindström, Moissei K. Sheinkman, G.S. Oehrlein

1807

Defect Formation and Recombination Processes in p-Type Modulation-Doped Si Epilayers

Authors: I.A. Buyanova, W.M. Chen, Anne Henry, W.X. Ni, G.V. Hansson, Bo Monemar

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Important Nonradiative Grown-In Defects in MBE-Grown Si and SiGe/Si Heterostructures

Authors: W.M. Chen, I.A. Buyanova, Anne Henry, W.X. Ni, G.V. Hansson, Bo Monemar

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Influence of Ultrasound Vibrations on the Stable-Metastable Transitions of EL2 Centers in GaAs

Authors: I.A. Buyanova, Sergei S. Ostapenko, A.U. Savchuk, Moissei K. Sheinkman

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