By Noboru Miura
This booklet describes the elemental innovations of assorted actual phenomena in semiconductors and their modulated constructions below excessive magnetic fields. the subject conceal magneto-transport phenomena, cyclotron resonance, far-infrared spectroscopy, magneto-optical spectroscopy, diluted magnetic semiconductors in excessive magnetic fields, in addition to the new advances within the experimental recommendations wanted for prime box experiments. ranging from the introductory half describing the fundamental theoretical history, each one bankruptcy introduces common experimental information that have been really received in very excessive magnetic fields more often than not within the pulsed box variety as much as a number of megagauss (20-100T). The e-book has either the nature of a textbook and a monograph. For researchers and scholars with an curiosity in semiconductor physics or in excessive magnetic fields, it is going to function an invaluable advisor.
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Additional info for Physics of semiconductors in high magnetic fields
14. The edge states play important roles in quantum transport in high magnetic ﬁelds, such as quantum Hall eﬀect or magneto-tunneling eﬀect, as will be described in the next chapter. More general cases in a highly anisotropic energy band having open orbits, as in organic conductors, were treated by Osada and Miura . 1 High magnetic ﬁeld eﬀects on Bloch electrons Breakdown of eﬀective mass theory The eﬀective mass theory is very successful in obtaining the energy levels under magnetic ﬁelds.
This term is called the Rashba term, and causes spin splitting in the absence of magnetic ﬁeld. As there is inevitably an electric ﬁeld at the interface of heterostructures, spin degeneracy of two-dimensional electrons is lifted at zero ﬁeld to a greater or less extent. This eﬀect is called the Rashba eﬀect and has attracted much interest in connection with spintronics. B. Valence band The valence band structure in quantum wells and heterostructures is fairly complicated because of the interaction between the two diﬀerent valence bands which are degenerate without the quantum potential.
112) where Φ0 = h/e is the unit ﬂux. 112) by multiplying (eB/¯h)2 . 114) ¯h Such semiclassical treatment of the electron motion is useful when considering the electron dynamics of the Fermi surface in a magnetic ﬁeld. 1 Landau levels in semiconductors Two-band model The simplest approximation to treat energy bands and Landau levels in actual semiconductors within the framework of the k · p approximation is the two-band model. In this model we consider only a single conduction band and a single valence band which are faced with each other with a relatively small band gap, as shown in Fig.