DYNAMIC PROPERTIES OF COMMENSURATE AND INCOMMENSURATE SPIN-DENSITY WAVES AS PROBED BY C-13 NMR

Authors
BARTHEL E QUIRION G WZIETEK P JEROME D CHRISTENSEN JB JORGENSEN M BECHGAARD K
Citation
E. Barthel et al., DYNAMIC PROPERTIES OF COMMENSURATE AND INCOMMENSURATE SPIN-DENSITY WAVES AS PROBED BY C-13 NMR, Synthetic metals, 56(2-3), 1993, pp. 2581-2586
Citations number
21
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Mining
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
56
Issue
2-3
Year of publication
1993
Pages
2581 - 2586
Database
ISI
SICI code
0379-6779(1993)56:2-3<2581:DPOCAI>2.0.ZU;2-C
Abstract
We have measured C-13 NMR lineshape and nuclear spin lattice relaxatio n in the spin-density-wave (SDW) state of (TMTTF)2Br and (TMTSF)2PF6. The incommensurability of the SDW in (TMTSF)2PF6 is confirmed, and we show that the phason mode is dominant in the relaxation. However, we f ound that (TMTTF)2Br is commensurate and estimated that the SDW amplit ude is small. No phason contribution to the relaxation is observed in this compound. We discuss some implications for theory.