A unique and rare opportunity of revealing the nature of the spin-density-wave (SDW) fluctuation in the quasi-one-dimensional organic conductor (TMTSF)2PF6 has been provided by our AC impedance measurements above the SDW transition temperature. A close resemblance of the low-frequency dielectric response in the range between 20 K and the temperature of maximum resistivity Tmax ∼ 80 K to that in the SDW ground state was revealed, with quite compatible exponents for their power law dependencies. The SDW fluctuation has thus been identified in the 2D Fermi liquid regime, which can be regarded as a precursor phase of the SDW ground state.
Bibliographical noteFunding Information:
This work was supported by the Korea Science and Engineering Foundation (NRL Program R0A-2008-000-20066-0, User Program of Proton Engineering Frontier Project) and by the Korea Research Foundation (Grant Nos. KRF-2004-005-C00060 and KRF-2007-314-C00129). This work was also supported by the Seoul Research and Business Development Program (Grant No. 10583). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.
- Low-frequency dielectric response
- Spin-density-wave fluctuation
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)