NDLI: Cooling rate dependence of the lattice parameters of (TMTSF)/sub 2/ClO/sub 4/

Content Provider	IEEE Xplore Digital Library
Author	Fertey, P. Sayetat, F. Muller, J. Pouget, J.P. Lenoir, C. BataiI, P.
Copyright Year	1994
Description	Author affiliation: Universite de Paris Sud (Fertey, P.)
Abstract	Summary form only given. The quasi-one-dimensional conductor (TMTSF)/sub 2/CIO/sub 4/ exhibits a ground state whose nature depends upon the cooling rate of the sample in the vinicity of the 24 K anion ordering transition. Relaxed (R) samples are superconductor with a T/sub c/ /spl ap/ 1.2 K, while quenched (Q) samples exhibit a spin density wave (SDW) ground state below about 6 K. Although it has been previously established that the fraction and size of ordered domains of C10/sub 4//sup -/ depend strongly on the cooling rate [1], the interplay between structural and electronic degrees of freedom is not clearly understood. In that purpose we present a diffractometric determination of the triclinic lattice parameters between 13 and 300 K. Our results agree with those previously reported by B.Gallois et al. [2]. However the better resolution reveals anomalies below 50 K in the thermal dependence of these parameters which could be related to the freezing of the CH/sub 3/ groups of the TMTSF molecule. We have also performed low temperature measurements of the triclinic lattice parameters in R and Q samples, cooled respectively at 2K/h and 30K/min around 24 K, and found significant differences for the c (CR-cQ/c = - 0.2% ) and Y (YR-YQ/Y = + 0.3%) lattice parameters. The c parameter controls the coupling between (a,b) conducting planes, while the Y angle controls the balance between interchain transfer integrals within these planes. The relative variation of these parameters amounts to that observed[3] in (TMTSF)/sub 2/PF/sub/6 pressurized by several Kbars at low temperature.
Starting Page	129
Ending Page	129
File Size	98478
Page Count	1
File Format	PDF
DOI	10.1109/STSM.1994.834872
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-07-24
Publisher Place	Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance evaluation Temperature measurement Radio frequency Cooling Lattices Threshold current Hall effect Solid state circuits Physics Radiofrequency interference
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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