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Perspective: THz-driven nuclear dynamics from solids to molecules.

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Intense terahertz (THz) light sources enable studying molecular and solid-state dynamics. This perspective compares THz-driven dynamics in these systems, offering design criteria for future research.

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Area of Science:

  • Physics
  • Chemistry
  • Materials Science

Background:

  • Recent advancements in intense pulsed terahertz (THz) light sources offer new possibilities for studying material dynamics.
  • Many dipole-active excitations in solids and molecules resonate within the THz frequency range.
  • While THz-driven dynamics in solids are well-explored, analogous studies in molecular systems are less common.

Purpose of the Study:

  • To compare THz-driven dynamics in solid-state and molecular systems.
  • To identify similarities and differences on conceptual and practical levels.
  • To provide design criteria for developing THz-driven molecular dynamics research.

Main Methods:

  • Conceptual comparison of THz-driven dynamics in solids and molecules.
  • Analysis of experimental parameters for THz-excitation experiments.
  • Review of recent examples of nonlinear THz excitations.

Main Results:

  • THz-driven dynamics in solids and molecules share fundamental principles but differ in specific responses.
  • Key experimental parameters are identified for effectively driving and probing these dynamics.
  • Nonlinear THz excitations reveal rich physics in both phonons (solids) and inter-molecular vibrations (molecules).

Conclusions:

  • THz technology provides a powerful tool for investigating ultrafast dynamics in both condensed matter and molecular systems.
  • Further research is needed to fully exploit THz-driven dynamics in molecular systems.
  • This work lays the groundwork for future experimental designs and theoretical investigations in this emerging field.