The optical mode vibrational frequency of GaAs is 8 THz. In the linear chain model, knowing the
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The optical mode vibrational frequency of GaAs is 8 THz. In the linear chain model, knowing the masses of the Ga and As atoms from the periodic table, what does this imply for the force constant of the springs between the atoms? (Assume the two force constants are equal.) What does this imply for the sound speed of this material? The unit cell size of GaAs is a = 5.65 Å.
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In nature Ga has two common isotopes one with 38 and one with 40 neutrons in addition to ...View the full answer
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