Electrical conductivity and upper critical magnetic field of the molecular superconductor a-(EDT-TTF)[Ni(dmit)2]
✍ Scribed by Makoto Inokuchi; Hiroyuki Tajima; Toshiaki Ohta; Akiko Kobayashi; Haruo Kuroda; Toshio Naito; Akane Sato; Hayao Kobayashi
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 314 KB
- Volume
- 6
- Category
- Article
- ISSN
- 1616-301X
No coin nor oath required. For personal study only.
✦ Synopsis
The ambient-pressure superconductor u-(EDT-~F) [Ni(dmit),], which is a charge transfer salt formed between EDT-ITF and Ni(dmit),, exhibits a superconducting transition at 1.3 K and a phase transition around 20 K featuring a characteristic resistance hump.
We estimated that the room-temperature electrical conductivity was 140-370 and 14-36 S cm-' for the current parallel and perpendicular to the conducting plane respectively.
We measured the upper critical magnetic field (4,) in the superconducting phase. The temperature dependence of H,, was estimated I dH,,/d TI T = Tc= -0.27 T K-' (Bllc -axis); I due,/ dTI T-Tc= -3.5T K-' (Bllabplane). The anisotropy of H , within the abplane was found to be quite small, indicating a two-dimensionally isotropic character within the abplane in the superconducting state of the salt.