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Spin‐density‐wave gap in (TMTSF) 2 PF 6 probed by reflection‐type terahertz time‐domain spectroscopy
Author(s) -
Watanabe Shinichi,
Kondo Ryusuke,
Kagoshima Seiichi,
Shimano Ryo
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200879900
Subject(s) - terahertz radiation , spectroscopy , reflection (computer programming) , condensed matter physics , terahertz time domain spectroscopy , spin density wave , conductivity , metal–insulator transition , optical conductivity , terahertz spectroscopy and technology , physics , materials science , electrical resistivity and conductivity , chemistry , optics , quantum mechanics , superconductivity , computer science , programming language
Abstract We report on a development of the reflection‐type terahertz time‐domain spectroscopy system and apply it to determine the conductivity spectra of the spin density wave (SDW) ground states in (TMTSF) 2 PF 6 . We take special care over optimizing the spatial resolution of the measurement system in order to investigate the tiny sample and also for correcting the phase error of the measurement. We observe a distinct reduction of the optical conductivity below ∼65 cm –1 , which is a clear indication of SDW gap formation with metal–insulator transition. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)