The low temperature specific heat of κ-(BEDT-TTF)2Cu(NCS)2

✍ Scribed by R.G. Goodrich; Jing-chun Xu

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 304 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(09)80030-6

✦ Synopsis

We have measured the specific heat of lC-(BEDT-lTF>zCu(NCS>z from 4 to 14 K. The lattice specific heat is assumed to contain contributions due to 18 intra molecular coupled translational and libronic modes involving the two (BETF-TIP) molecules and the Cu(NCS)z, the phonon-libron contribution to the specific heat in our temperature range can be represented by a Debye integral expression with a Debye temperature of 95 K. This low value of the Debye temperature along with a T c of 9.4 K indicates a strong coupling superconductor if the electron -phonon and libron coupling is responsible for the pairing.