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Spin-Orbit Coupling Effects in Zinc Blende Structures
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TLDR
In this article, a character table for the group of the wave vector at certain points of symmetry in the Brillouin zone is given, and a possible reason for the complications which may make a simple effective mass concept invalid for some crystals of this type structure is presented.Abstract:
Character tables for the "group of the wave vector" at certain points of symmetry in the Brillouin zone are given. The additional degeneracies due to time reversal symmetry are indicated. The form of energy vs wave vector at these points of symmetry is derived. A possible reason for the complications which may make a simple effective mass concept invalid for some crystals of this type structure will be presented.read more
Citations
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Journal ArticleDOI
Enhanced spin–orbit torques by oxygen incorporation in tungsten films
Kai-Uwe Demasius,Kai-Uwe Demasius,Timothy Phung,Weifeng Zhang,Brian M. Hughes,See-Hun Yang,Andrew J. Kellock,Wei Han,Aakash Pushp,Stuart S. P. Parkin,Stuart S. P. Parkin +10 more
TL;DR: In this paper, large spin Hall angles of up to approximately -0.5 by incorporating oxygen into tungsten were measured and the invariance of the spin Hall angle for higher oxygen concentrations with the bulk properties of the films suggests that the spin-orbit torques in this system may originate dominantly from the interface rather than from the interior of the materials.
Journal ArticleDOI
Effective masses of holes at GaAs-AlGaAs heterojunctions.
David Broido,L. J. Sham +1 more
TL;DR: In this paper, the spin split hole subband structure is calculated and the cyclotron masses as a function of magnetic field are extracted from it, and the many-body effects are important.
Journal ArticleDOI
Spin dynamics in semiconductors
TL;DR: In this paper, the current status of spin dynamics in semiconductors is reviewed, which has achieved a lot of progress in the past years due to the fast growing field of semiconductor spintronics.
Journal ArticleDOI
Ferroelectric Materials for Solar Energy Conversion: Photoferroics Revisited
TL;DR: The application of ferroelectric materials (i.e. solids that exhibit spontaneous electric polarisation) in solar cells has a long and controversial history as mentioned in this paper, and the recent successful application of inorganic and hybrid perovskite structured materials (e.g. BiFeO3, CsSnI3, CH3NH3PbI3) emphasises that polar semiconductors can be used in conventional photovoltaic architectures.
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Effect of the heterointerface on the spin splitting in modulation doped InxGa1−xAs/InP quantum wells for B→0
TL;DR: In this article, Shubnikov-de Haas measurements on nongated and gated Hall bars were performed to determine the spin-orbit coupling constant of conduction band electrons in In053Ga047As/In077Ga023As/inP heterostructures.
References
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Journal ArticleDOI
Cyclotron Resonance of Electrons and Holes in Silicon and Germanium Crystals
TL;DR: In this paper, the results of cyclotron resonance experiments on charge carriers in silicon and germanium single crystals near 4\ifmmode^\circ\else\textdegree\fi{}K were given.
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Theory of Brillouin Zones and Symmetry Properties of Wave Functions in Crystals
TL;DR: In this article, the problem of finding the Brillouin zones is studied from the point of view of group theory, where a representation of the symmetry group is associated with the underlying problem.
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Accidental Degeneracy in the Energy Bands of Crystals
TL;DR: In this paper, the authors investigated the circumstances under which two wave functions occurring in the Hartree or Fock solution for a crystal can have the same reduced wave vector and the same energy.
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A Method for Obtaining Electronic Eigenfunctions and Eigenvalues in Solids with An Application to Sodium
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Effect of Time-Reversal Symmetry on Energy Bands of Crystals
TL;DR: In this paper, a criterion is developed to facilitate calculation of when and how such additional degeneracy will occur, and the consequences of the reality of the Hamiltonian are tabulated for a number of cases.