Postdoctoral Appointee - Theory of Acoustoelectric Systems. Onsite

Postdoctoral Appointee - Theory of Acoustoelectric Systems. Onsite

This postdoctoral position is a temporary position for up to one year, which may be renewed at Sandia's discretion up to five additional years. The PhD must have been conferred within five years prior to employment. Individuals in postdoctoral positions may bid on regular Sandia positions as internal candidates, and in some cases may be converted to regular career positions during their term if warranted by ongoing operational needs, continuing availability of funds, and satisfactory job performance.

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How do traveling piezoelectric acoustic waves interact with mobile charge carriers when the interaction becomes sufficiently strong that conventional small-signal and perturbative descriptions break down? What new dynamical regimes emerge when carrier transport, screening, nonlinear acoustic propagation, dissipation, and feedback between electronic and mechanical degrees of freedom must all be treated on equal footing?

We are seeking a postdoctoral researcher to develop new theoretical frameworks for understanding acoustoelectric systems in strongly interacting and nonlinear regimes. The central scientific goal of this position is to establish a unified description of the coupled dynamics of acoustic excitations and electronic transport that remains applicable beyond conventional perturbative treatments. Of particular interest are regimes in which traveling piezoelectric acoustic fields substantially modify carrier distributions and transport, while the resulting electronic response in turn modifies the propagation, attenuation, amplification, and nonlinear evolution of the acoustic field.

A major objective will be to identify the physical mechanisms that ultimately regulate and saturate these interactions. This fundamental theory effort is part of a larger, dedicated research program at Sandia National Laboratories aimed at understanding and exploiting acoustoelectric physics for next-generation devices. The successful candidate will therefore work closely with experimentalists…