Role of Thermal Equilibrium Dynamics in Atomic Motion during Nonthermal Laser-Induced Melting

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Abstract

This study shows that initial atomic velocities as given by thermodynamics play an important role in the dynamics of phase transitions. We tracked the atomic motion during nonthermal laser-induced melting of InSb at different initial temperatures. The ultrafast atomic motion following bond breaking can in general be governed by two mechanisms: the random velocity of each atom at the time of bond breaking (inertial model), and the forces acting on the atoms after bond breaking. The melting dynamics was found to follow the inertial model over a wide temperature range.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • University of Paris-Saclay
  • Lund University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Atom- och molekylfysik och optik
Originalspråkengelska
Sidor (från-till)105701
TidskriftPhysical Review Letters
Volym124
Utgåva nummer10
StatusPublished - 2020 mar 13
PublikationskategoriForskning
Peer review utfördJa