97下近代物理期ä¸

97下近代物理期ä¸

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近近近近 近近近 近近近近近近 近近近 2008.4.23 1. Consider a symmetric quantum well structure. If we know that there are three odd confined states in this quantum well, how many even confined states in the quantum well? 2. (a) When we increase the width of a quantum well, will the number of confined states be increased or decreased? (b) When we decrease the height of the barrier potential of a quantum well, will the number of confined states be increased or decreased? 3. Suppose we have two quantum wells next to each other. Please explain why an electron can possibly be transferred from 1 quantum well into another when the barrier between the two quantum wells becomes very thin. In this situation, they are called the coupled quantum well. 4. What is the energy difference between two successive energy states in a harmonic oscillator? 5. Please give two examples of harmonic oscillator. 6. Suppose the transmission probability of an electron of energy in kinetic
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This note was uploaded on 02/21/2012 for the course EE 101 taught by Professor 張捷力 during the Spring '07 term at National Taiwan University.

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97下近代物理期ä¸

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