Home | About Journal | Web Links | E-mail Alerts | RSS RSS Icon | Browse
Previous Article Next Article

Dynamics of photoinduced phenomena in AV10O15 (A = Ba, Sr)

Source: Phys. Rev. B 84, 214442 (2012); http://dx.doi.org/10.1103/PhysRevB.84.214442

Published 29 December 2011

PACS
  • 78.47.J-
    Ultrafast pump/probe spectroscopy (<1 ps) in condensed matter
  • 71.30.+h
    Metal-insulator transitions and other electronic transitions
  • 75.25.Dk
    Orbital, charge, and other orders, including coupling of these orders
  • YEAR: 2011
PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef APS
A. Nogami,1 K. Takubo,1 T. Kajita,1 M. Hoshino,1 and T. Katsufuji1,2,3
1Department of Physics, Waseda University, Tokyo 169-8555, Japan
2Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Tokyo 169-0051, Japan
3Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Corporation, Saitama 332-0012, Japan
We studied the dynamics of photoinduced phenomena in AV10O15 (A = Ba, Sr), where the ground state changes from an insulating state with V trimerization (Ba) to another insulating state with no structural anomaly (Sr). We found that the time dependence of photoinduced reflectivity change is similar up to several picoseconds, but is critically different in the range of several tens of picoseconds between the two compounds. These different behaviors can be attributed to the coupled mode of the photoexcited electronic state and the lattice distortion, which propagates in the crystal of SrV10O15 but is trapped in the local minimum of the free energy in BaV10O15.
History: Received 29 October 2011; revised 14 December 2011; published 29 December 2011
Digital Object Identifier: http://dx.doi.org/10.1103/PhysRevB.84.214442
ADVERTISEMENT