Time-resolved terahertz studies of carrier dynamics in semiconductors, superconductors, and strongly correlated electron materials

Robert A. Kaindl, Richard D. Averitt

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Perhaps the most important aspect of contemporary condensed matter physics involves understanding strong Coulomb interactions among the large numbers of electrons in a solid. Electronic correlations lead to the emergence of new system properties, such as metal-insulator transitions, superconductivity, magnetoresistance, Bose-Einstein condensation, the formation of excitonic gases, or the integer and fractional quantum Hall effects. The discovery of high-TC superconductivity in particular was a watershed event, leading to dramatic experimental and theoretical advances in the eld of correlated-electron systems.1-10 Such materials often exhibit competition among the charge, lattice, spin, and orbital degrees of freedom, whose cause-effect relationships are difcult to ascertain. Experimental insight into the properties of solids is traditionally obtained by time-averaged probes, which measure, for example, linear optical spectra, electrical conduction properties, or the occupied band structure in thermal equilibrium. Many novel physical properties arise from excitations out of the ground state into energetically higher states by thermal, optical, or electrical means. This leads to fundamental interactions between the system’s constituents, such as electron-phonon and electron-electron interactions, which occur on ultrafast timescales. Although these interactions underlie the physical properties of solids, they are often only indirectly inferred from time-averaged measurements.

Original languageEnglish (US)
Title of host publicationTerahertz Spectroscopy
Subtitle of host publicationPrinciples and Applications
PublisherCRC Press
Pages119-170
Number of pages52
ISBN (Electronic)9781420007701
ISBN (Print)9780849375255
DOIs
StatePublished - Jan 1 2017
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)
  • Chemistry(all)
  • Chemical Engineering(all)

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