ac-Calorimetry of (TMTSF)2PF6

D. K. Powell, K. P. Starkey, G. Shaw, Y. V. Sushko, L. K. Montgomery, J. W. Brill

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We have searched for dynamic thermal effects in (TMTSF)2PF6 by measuring its specific heat with ac calorimetry. Near its spin-density-wave transition (Tc=12 K), the magnitude of the specific heat is the same as that measured in quasi-static measurements, indicating that there are no kinetic contributions to the specific heat at these temperatures. The anomaly at Tc is consistent with the Ehrenfest relation estimate for a continuous phase transition. No anomalies are observed in a pellet of (TMTSF)2PF6 mixed with KBr at Tc or the expected "spin-density-wave glass" transition (Tg∼3.5 K), suggesting that residual disorder in the pellet freezes in a glassy state at Tc.

Original languageEnglish
Pages (from-to)637-640
Number of pages4
JournalSolid State Communications
Issue number10-11
StatePublished - Aug 29 2001

Bibliographical note

Funding Information:
We appreciate the assistance of S. Rimmer in X-ray diffraction and helpful discussions with K. Biljakovic and J. Brooks. This research was supported in part by the National Science Foundation, Grants DMR-9731257, DMR-9414268, and DMR-9300507.


  • A. organic crystals
  • B. heat capacity
  • B. phase transitions

ASJC Scopus subject areas

  • Chemistry (all)
  • Condensed Matter Physics
  • Materials Chemistry


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