Simulations
Atomic vibrations in crystals
The first four simulations show the atomic vibrations for a one dimensional mass/spring chain (equal masses) for several phonon modes and a polaron mode. The next two simulations show the simplified motions for the vibrations of tungsten (W) and zirconium (Zr) in the negative thermal expansion material ZrW2O8. The last simulation shows dimeron motion at a temperature just above the ferromagnetic transition temperature, Tc.
NSF support: DMR007186, DMR0301971
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Long Wavelength Acoustic Phonon |
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Short Wavelength Acoustic Phonon |
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Short Wavelength Optical Phonon |
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Polaron (static and motion of) |
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Negative Thermal Expansion |
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Negative Thermal Expansion in 3-D |
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dimeron_motion |