Download PDF by Mikhail I. Dyakonov: Spin physics in semiconductors To Perel memory

By Mikhail I. Dyakonov

ISBN-10: 3540788190

ISBN-13: 9783540788195

This publication describes appealing optical and shipping phenomena concerning the electron and nuclear spins in semiconductors with emphasis on a transparent presentation of the physics concerned. fresh effects on quantum wells and quantum dots are reviewed. The e-book is meant for college students and researchers within the fields of semiconductor physics and nanoelectronics.

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Download e-book for iPad: Spin physics in semiconductors To Perel memory by Mikhail I. Dyakonov

This e-book describes attractive optical and delivery phenomena concerning the electron and nuclear spins in semiconductors with emphasis on a transparent presentation of the physics concerned. fresh effects on quantum wells and quantum dots are reviewed. The booklet is meant for college kids and researchers within the fields of semiconductor physics and nanoelectronics.

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Thus if the recombination time is known independently, the spin relaxation time can be extracted. An example of such measurements is discussed in Sect. 6. The Hanle effect is a development of this method [1]. A magnetic field is applied perpendicular to the exciting beam, at right angles to the initial direction of the spins, causing the spins to precess at the Larmor frequency in a plane perpendicular to the field axis. This produces a new dynamic equilibrium in which excitation, recombination, spin relaxation and spin precession are balanced.

5 2 Spin Dynamics of Free Carriers in Quantum Wells 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 momentum between the electrons and the crystal lattice and so determine the mobility of an ensemble of electrons. Electron–electron scattering becomes significant in n-type semiconductors. It redistributes momentum within an ensemble of electrons but does not contribute directly to the mobility. For years it was stated in the literature that 1/τp∗ was the same as 1/τp [14] and could therefore be determined experimentally from the mobility; no one seemed to notice the potential importance of electron–electron scattering.

29 Coherent Spin Dynamics in Quantum Dots. This topic is covered in Chap. 6. It contains extraordinarily interesting and surprising new results on “mode-locking” of spin coherence in an ensemble of quantum dots excited by a periodic sequence of laser pulses and, in particular, on spin precession “focusing” induced by the hyperfine interaction with the nuclear spins. Spin Properties of Confined Electrons in Silicon. Spin-related studies in silicon were somewhat neglected in recent years, because it practically does not give photoluminescence, has a weak spin–orbit interaction, and contains few nuclear spins.

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Spin physics in semiconductors To Perel memory by Mikhail I. Dyakonov


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