Published February 1, 2009 | Version v1
Journal article Metadata-only

Photoinduced insulator-metal transition in Pr0.5Ca0.5CoO3 as studied by femtosecond spectroscopy

Creators

  • 1. Department of Materials Science, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
  • 2. Materials and structures lab., Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama, 226-8503 (Japan)
  • 3. Department of Chemistry, Gunma University, 1-5-1, Tenjincho, Kiryu, Gunma 376-8515 (Japan)

Description

Ultrafast optical response has been investigated using fs laser system on a perovskite-type cobalt oxide, Pr0.5Ca0.5CoO3 which undergoes the insulator-metal transition at 89 K. After the photo-irradiation at 30 K, the reflectivity shows a sudden increase. The ultrafast reflectance changes are quantitatively reproduced by the numerical calculation considering the linear combination of the dielectric functions of the initial insulating and the final metallic state, indicating ultrafast phase transition on the time scale of femtosecond.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/148/1/012019

Additional details

Identifiers

DOI
10.1088/1742-6596/148/1/012019;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
148
Journal Issue
1
Journal Page Range
[4 p.]
ISSN
1742-6596

Conference

Title
63. Yamada conference on photo-induced phase transition and cooperative phenomena
Acronym
PIPT3
Dates
11-15 Nov 2008
Place
Osaka (Japan)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41103880
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ABSORPTION SPECTROSCOPY; CALCIUM COMPOUNDS; COBALT OXIDES; DIELECTRIC MATERIALS; ELECTRIC CONDUCTORS; LASER RADIATION; PERMITTIVITY; PEROVSKITE; PHASE STABILITY; PHASE STUDIES; PHASE TRANSFORMATIONS; PRASEODYMIUM COMPOUNDS; PULSED IRRADIATION; REFLECTIVITY
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COBALT COMPOUNDS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; IRRADIATION; MATERIALS; MINERALS; OPTICAL PROPERTIES; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PEROVSKITES; PHYSICAL PROPERTIES; RADIATIONS; RARE EARTH COMPOUNDS; SPECTROSCOPY; STABILITY; SURFACE PROPERTIES; TRANSITION ELEMENT COMPOUNDS