The spin-Peierls compound MEM( TCNQ)(2): Evidence for the non-universalityof the magnetic phase diagram

Authors
Weckhuysen, L Demishev, SV Semeno, AV Vanacken, J Trappeniers, L Pronin, AA Moshchalkov, VV
Citation
L. Weckhuysen et al., The spin-Peierls compound MEM( TCNQ)(2): Evidence for the non-universalityof the magnetic phase diagram, EUROPH LETT, 53(5), 2001, pp. 667-672
Citations number
21
Categorie Soggetti
Physics
Journal title
EUROPHYSICS LETTERS
ISSN journal
02955075 → ACNP
Volume
53
Issue
5
Year of publication
2001
Pages
667 - 672
Database
ISI
SICI code
0295-5075(200103)53:5<667:TSCMTE>2.0.ZU;2-Y
Abstract
The spin-Peierls state in the organic compound MEM(TCNQ)(2) is studied by m agnetisation measurements in magnetic fields up to 50 T. The possible unive rsality of the magnetic field vs. temperature magnetic phase diagram of spi n-Peierls systems is investigated by comparing the results on MEM(TCNQ)(2) with the corresponding data for the inorganic spin-Peierls compound CuGeO3. Although the transition line between the uniform and the dimerised phase f ollows the same dependence for both compounds, strong discrepancies are fou nd for the phase boundary between the dimerised and the high-field magnetic phase.