𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Correlations, dimensionality and instabilities in organic superconductors

✍ Scribed by D. Jérome; L. Balicas; K. Behnia; W. Kang; P. Wzietek; L. Hubert; C. Bourbonnais

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
450 KB
Volume
206-207
Category
Article
ISSN
0921-4526

No coin nor oath required. For personal study only.

✦ Synopsis

We discuss the role of Coulombic repulsion in organic superconductors exhibiting quasi-one-dimensional transport properties. A recent investigation in high magnetic fields shows that the charge localization occurring at low temperature in a 1-D half-fillled band is suppressed by the 1-D to 2-D (3-D) cross-over in selenium compounds. However, a localization around 30 K in the non-ordered phase can be reactivated by the application of a high transverse magnetic field. This phenomenon provides an interpretation for the large transverse magnetoresistance observed in quasi-l-D conductors with open Fermi surfaces. The intermediate (strong) coupling limit is valid for the spin degree of freedom whereas the charge is governed by the strength of the Umklapp scattering varying by a large factor from sulfur to selenium compounds and under pressure.

📜 SIMILAR VOLUMES

Competition between structural instabili
Competition between structural instabilities in organic conductors and superconductors
✍ S. Ravy; R. Moret; J.P. Pouget; R. Comes 📂 Article 📅 1986 🏛 Elsevier Science ⚖ 349 KB

The competition between different anion orderings, which influences the electronic properties, is illustrated with 3 examples of recent X-ray studies of the alloy (TMTSF) 2 (CI04) I\_× (ReO4)x, (TMTSF) 2 ReO 4 under pressure and (TMTSF) 2 PF2O 2.