Published May 1, 2019 | Version v1
Journal article Metadata-only

Pump-probe study of β'-(BEDT-TTF)(TCNQ) crystal near antiferromagnetic transition

Creators

  • 1. College of Liberal Arts and Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, 263-8522, Chiba (Japan)
  • 2. Graduate School of Education, Chiba University, 1-33 Yayoi-cho, Inage-ku, 263-8522, Chiba (Japan)
  • 3. Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, 263-8522, Chiba (Japan)

Description

The photo-excited state properties of an organic Mott-insulator β'-(BEDT-TTF)(TCNQ) crystal were investigated by pump-probe measurements. Considerable change in the pump-probe reflection signal with a wide spectral range was observed near the antiferromagnetic (AF) transition temperature of the TCNQ layers. In the time response, approach to the AF temperature induced the appearance of a slow decay signal whose lifetime was estimated to be about 3 msec maximum. These results indicate that a sustained mechanism exists for photo-excited states near the AF transition, which is probably related to a critical slowing down phenomenon. (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/1220/1/012044

Additional details

Identifiers

DOI
10.1088/1742-6596/1220/1/012044;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
1220
Journal Issue
1
Journal Page Range
[4 p.]
ISSN
1742-6596

Conference

Title
12. International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials
Acronym
EXCON 2018
Dates
8-13 Jul 2018
Place
Nara City (Japan)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54105767
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANTIFERROMAGNETISM; BEDT-TTF; CRYSTALS; DECAY; EXCITED STATES; OPTICAL PUMPING; SIGNALS; SLOWING-DOWN; TRANSITION TEMPERATURE; TTF-TCNQ
Descriptors DEC
ENERGY LEVELS; HETEROCYCLIC COMPOUNDS; MAGNETISM; NITRILES; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; ORGANIC SUPERCONDUCTORS; PHYSICAL PROPERTIES; PUMPING; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES