Charge localization in organic conductors (TM) X: The influence of anion ordering
| ISSN: |
1434-6036
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PACS. 71.10.Pm Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.) - 74.70.Kn Organic superconductors
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract: An investigation of the different contributions leading to charge localization in a 1/2 or 1/4 filled band 1D conductor has been conducted through a study of transport properties in the solid solution [(TMTSF)1-x (TMTTF) x]2ReO4. The existence of an ordering transition of the anions allows to identify two contributions to the electronic potential with wave vector 4kF. A dominant on-site 4kF potential besides the bond contribution is revealed when Umklapp scattering is pertinent via the weakening of the localization arising at the (0, 1/2, 1/2) anion ordering which is stabilized under pressure in the compound [(TMTSF) 0.5 (TMTTF)0.5]2ReO4 at variance with the enhancement of localization observed in the homomolecular (TMTTF)2ReO 4 material.
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| Type of Medium: |
Electronic Resource
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| URL: |