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Electron Transmission Through Non Tunneling Regime Of Gaas Algaas Coupled Quantum Wells
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Book Synopsis Electron Transmission Through Non-Tunneling Regime of GAAS-Algaas Coupled Quantum Wells by : Sujaul Chowdhury
Download or read book Electron Transmission Through Non-Tunneling Regime of GAAS-Algaas Coupled Quantum Wells written by Sujaul Chowdhury and published by Grin Publishing. This book was released on 2017-10-02 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research Paper (postgraduate) from the year 2017 in the subject Physics - Quantum Physics, grade: 4.00, Shahjalal University of Science and Technology, course: Nanostructure Physics, language: English, abstract: We have investigated electron transmission through non-tunneling regime of a semiconductor nanostructure called Coupled Quantum Well (CQW). Oscillatory transmission coefficient as a function of energy is found to show spectacular waxing and waning in amplitude. Corresponding features are expected to be observed in optical (Physical Review B 54 (1996) 1541) and quantum transport (Physical Review Letters 58 (1987) 816) experiments and hence the results besides verifying the Physics will have impact on future devices based on CQW.
Book Synopsis COUPLED QUANTUM WELL IN LONGITUDINAL MAGNETIC FIELD by : Uttam Kumar Chowdhury
Download or read book COUPLED QUANTUM WELL IN LONGITUDINAL MAGNETIC FIELD written by Uttam Kumar Chowdhury and published by American Academic Press. This book was released on 2017-02-22 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with pure Nanostructure Physics of tunneling regime of GaAs-AlGaAs Coupled Quantum Well (CQW) in presence of magnetic field perpendicular to GaAs-AlGaAs interfaces. The book presents thorough and complete analytical calculations leading to a transcendental equation obeyed by the magnetic field dependent quasi-bound energy levels of CQW. Thorough numerical investigations are reported to bring out effects of the magnetic field on the quasi-bound energy levels. The effects have been successfully and completely explained in terms of a magnetic field dependent effective potential. The book has comprehensive analytical and numerical account of the problem. The book contains background on Quantum Mechanics, Microelectronics, Nanostructure Physics and Classical Mechanics to enable readers assimilate the book completely.
Book Synopsis Electron Transport in GaAs Quantum Dots under High Frequencies by : Bernard Richard Matis
Download or read book Electron Transport in GaAs Quantum Dots under High Frequencies written by Bernard Richard Matis and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ph. D.
Book Synopsis Non-Tunneling Regime of Coupled Quantum Well by : Sujaul Chowdhury
Download or read book Non-Tunneling Regime of Coupled Quantum Well written by Sujaul Chowdhury and published by . This book was released on 2016-09-08 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with pure Physics of non-tunneling regime of a semiconductor nanostructure called Coupled Quantum Well (CQW). The book presents thorough and complete analytical calculations leading to an analytic expression for transmission coefficient T of CQW in non-tunneling regime. Numerical investigations are reported in exhaustive detail to bring out features of T versus E (energy) curves and parametric variations of energy of maxima and minima of T versus E curves. The book contains successful and comprehensive, analytical, numerical, qualitative and quantitative account of electron transmission through non-tunneling regime of CQW.
Book Synopsis Dynamics of Electrons at Intersubband Excitation in Asymmetric Tunnel-Coupled Quantum Well Structure by : E. A. Zibik
Download or read book Dynamics of Electrons at Intersubband Excitation in Asymmetric Tunnel-Coupled Quantum Well Structure written by E. A. Zibik and published by . This book was released on 2001 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present investigations of the intersubband electron dynamics in asymmetric tunnel-coupled GaAs/AlGaAs quantum wells. The study is performed by time resolved pump and probe experiments. Temporal evolution of the bleaching signals has biexponential behaviour. In addition to the time of the relaxation into the ground state with LO-phonon emission a second long decay time depending on transition energy and temperature is observed. We associate the second recovery time with transitions between confined F-state of quantum wells and states in the barriers including Xz-states which appear due to high content of Al. The influence of the transitions between subbands with energy separation less than optical phonon energy on the relaxation processes is also discussed.
Book Synopsis Numerical Exploration of Isolated GaAs-AlGaAs Quantum Well by : Sujaul Chowdhury
Download or read book Numerical Exploration of Isolated GaAs-AlGaAs Quantum Well written by Sujaul Chowdhury and published by Springer Nature. This book was released on with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oscillatory Transmission Through Non-tunneling Regime of Isolated Quantum Well by : Sujaul Chowdhury
Download or read book Oscillatory Transmission Through Non-tunneling Regime of Isolated Quantum Well written by Sujaul Chowdhury and published by . This book was released on 2013 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics of Quantum Well Devices by : B.R. Nag
Download or read book Physics of Quantum Well Devices written by B.R. Nag and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum well devices have been the objects of intensive research during the last two decades. Some of the devices have matured into commercially useful products and form part of modern electronic circuits. Some others require further dev- opment, but have the promise of being useful commercially in the near future. Study of the devices is, therefore, gradually becoming compulsory for electronics specialists. The functioning of the devices, however, involve aspects of physics which are not dealt with in the available text books on the physics of semicond- tor devices. There is, therefore, a need for a book to cover all these aspects at an introductory level. The present book has been written with the aim of meeting this need. In fact, the book grew out of introductory lectures given by the author to graduate students and researchers interested in this rapidly developing area of electron devices. The book covers the subjects of heterostructure growth techniques, band-offset theory and experiments, electron states, electron-photon interaction and related phenomena, electron transport and the operation of electronic, opto-electronic and photonic quantum well devices. The theory as well as the practical aspects of the devices are discussed at length. The aim of the book is to provide a comprehensive treatment of the physics underlying the various devices. A reader after going through the book should find himself equipped to deal with all kinds of quantum well devices.
Book Synopsis Investigation of Electronic States in GaAs/AlGaAs Coupled Double Quantum Wells Under Hydrostatic Pressure by : John Huszagh Burnett
Download or read book Investigation of Electronic States in GaAs/AlGaAs Coupled Double Quantum Wells Under Hydrostatic Pressure written by John Huszagh Burnett and published by . This book was released on 1990 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intersubband Transitions in Quantum Wells by : Emmanuel Rosencher
Download or read book Intersubband Transitions in Quantum Wells written by Emmanuel Rosencher and published by Springer Science & Business Media. This book was released on 1992 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some 30 lectures consider phenomena associated with electrical charges passing through very thin (less than 15 nm) layers of semiconductor material. The optical nonlinearities that result have application in the electronic-devices industry, and provide a real-life example of theoretical one-dimensio"
Book Synopsis Hot Electron Birefringence and Absorption in Tunnel-Coupled Quantum Wells Due to Real Space Transfer by : L. E. Vorobjev
Download or read book Hot Electron Birefringence and Absorption in Tunnel-Coupled Quantum Wells Due to Real Space Transfer written by L. E. Vorobjev and published by . This book was released on 1998 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Birefringence and absorption modulation under longitudinal electric field in the tunnel-coupled GaAs/AtGaAs quantum wells have been found and investigated in the spectral region corresponding to intersubband electron transitions. The observed phenomena are explained by electron heating in electric field and electron transfer in real space. The equdirium absorption spectra at different lattice temperatures are analyzed too.
Book Synopsis The Effect of Temperature on the Resonant Tunneling and Electric Field Domain Formation in Multiple Quantum Well Superlattices by :
Download or read book The Effect of Temperature on the Resonant Tunneling and Electric Field Domain Formation in Multiple Quantum Well Superlattices written by and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analyzing the photocurrent spectra and the I-V characteristics of weakly coupled GaAs/AlGaAs multiquantum well structures, different transport regimes are distinguished. At low temperatures (below ~50 K), due to the electron coherence over a few periods of the superlattice, electron transport is dominated by sequential resonant tunneling. At higher temperatures, evidences for the increased contribution of nonresonant transport processes, and the subsequent modification in the electric field distribution in the device, are presented.
Book Synopsis Quantum Well and Superlattice Physics by :
Download or read book Quantum Well and Superlattice Physics written by and published by . This book was released on 1996 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photon-Assisted Resonant Tunneling Through a GaAs/AlGaAs Multiple Quantum Well Structure by : Bjorn Jonsson
Download or read book Photon-Assisted Resonant Tunneling Through a GaAs/AlGaAs Multiple Quantum Well Structure written by Bjorn Jonsson and published by . This book was released on 1992 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of bandgap engineering techniques to tailor the perpendicular transport characteristics of layered semiconductor structures has resulted in a variety of new phenomena and devices concepts . In particular the coherent interaction of electron waves reflected at interfaces gives rise to resonant tunneling effects which filter electrons of certain energy through the structure. A structure specifically designed for electron energy filtering is the variably spaced superlattice energy filter (VSSEF) in which the quantized states in adjacent quantum wells become aligned under appropriate bias conditions.
Book Synopsis Electron Velocity Modulation Under Lateral Transport in the Weakly-Coupled Double Quantum Well Structure by : P. I. Birjulin
Download or read book Electron Velocity Modulation Under Lateral Transport in the Weakly-Coupled Double Quantum Well Structure written by P. I. Birjulin and published by . This book was released on 1998 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large electron velocity modulation was found under lateral transport in the GaAs/ AlGaAs weakly coupled quantum well structure. It manifests in extremely strong dependence of the lateral conductance on the transverse electric field (gate voltage) as well as in the step-like shape of the lateral current on the lateral (source-drain) voltage.
Book Synopsis Proceedings of the Tenth International Workshop on the Physics of Semiconductor Devices : (December 14 - 18, 1999) [New Delhi]. 2(2000) by :
Download or read book Proceedings of the Tenth International Workshop on the Physics of Semiconductor Devices : (December 14 - 18, 1999) [New Delhi]. 2(2000) written by and published by Allied Publishers. This book was released on 2000 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stark Shift and Field-induced Tunneling in AlGaAs/GaAs Single and Coupled Quantum Wells by : Cheng Juang
Download or read book Stark Shift and Field-induced Tunneling in AlGaAs/GaAs Single and Coupled Quantum Wells written by Cheng Juang and published by . This book was released on 1990 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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