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Free Particle

Free Particle. ? (x) = A cos(kx) or ? (x) = A sin(kx) ? (x)= A e ikx = A cos(kx) + i A sin(kx) ? (x)= B e -ikx = B cos(kx) - i B sin(kx). Travelling wave to left. Travelling wave to right. Free Particle. ? (x)= A e ikx +B e -ikx is a solution A and B are constants

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6.3.3 Scanning Tunneling Microscope (STM)

6.3.3 Scanning Tunneling Microscope (STM). STM modes: (1) constant height, measure the tunneling current; (2) keep the current constant by varying the tip height. It can also be used to measure local DOS. 6.3.4 Double Barrier Tunneling and the Resonant Tunneling Diode. 0. a. a + L. 2a + L.

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Barrier tunneling - PowerPoint PPT Presentation

Free Particle

6.3.3 Scanning Tunneling Microscope (STM)