Heterogeneities in Low-Dimensional Materials

Heterogeneities in Low-Dimensional Materials

The overarching goal of this theme is to understand the critical roles of compositional and structural heterogeneities on electronic phenomena in low-dimensional materials in order to tailor physical properties critical for energy conversion processes. This is achieved by studying the effects of defects and boundaries on electronic scattering, excitation, and spin correlations, focusing on an atomistic-level understanding of heterogeneities in materials and devices with physical dimensions that are comparable to the quantum phase coherence length of the electrons. Electronic behaviors, including charge, spin, and excitations, are treated together in two aims:

  1. Understanding the roles of atomic defects on electron scattering and excitation processes
  2. Controlling mesoscopic boundaries for tailoring transport of charge and excitations

This research theme builds directly on expertise gained primarily in “Collective Phenomena in Nanophases,” which, as one of its aims, investigated how atomic-scale structure, nanoscale confinement, and quantum mechanical effects impact electronic processes within nanostructures and across interfaces. The gained skills and insights are here combined with the spatially resolved techniques pioneered across CNMS and previously applied most directly within “Electronic and Ionic Functionality on the Nanoscale.”

 

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