Suppose one were able to prepare a one-dimensional chain of Be with a long interatomic spacing...
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Suppose one were able to prepare a one-dimensional chain of Be with a long interatomic spacing of, say, 2.5 Å. Let's take, a = -10 eV, a = -5 eV, B = -0.8 eV, B = +1.4 eV. 2 P P == S a, 10 eV, ap: - 5 eV, P, = -0.8 eV, P₂ = + 1.4 eV. Draw the band structure (the dispersion curves and the DOS). If the scattering time for all the carriers in the system at 298 K is 2.0 × 10-4 s, calculate the conductivity (o) for this chain system at 298 K. (Hint: You need to calculate the number of of charge carriers in each band.) Which contributes most to the conductivity, electrons or holes? (They aren't equal - which should give you some insight into why Hall effect measurements don't merely reflect the number of electrons or holes.) == Suppose one were able to prepare a one-dimensional chain of Be with a long interatomic spacing of, say, 2.5 Å. Let's take, a = -10 eV, a = -5 eV, B = -0.8 eV, B = +1.4 eV. 2 P P == S a, 10 eV, ap: - 5 eV, P, = -0.8 eV, P₂ = + 1.4 eV. Draw the band structure (the dispersion curves and the DOS). If the scattering time for all the carriers in the system at 298 K is 2.0 × 10-4 s, calculate the conductivity (o) for this chain system at 298 K. (Hint: You need to calculate the number of of charge carriers in each band.) Which contributes most to the conductivity, electrons or holes? (They aren't equal - which should give you some insight into why Hall effect measurements don't merely reflect the number of electrons or holes.) ==
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Related Book For
College Mathematics for Business Economics Life Sciences and Social Sciences
ISBN: 978-0321614001
12th edition
Authors: Raymond A. Barnett, Michael R. Ziegler, Karl E. Byleen
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