TY - JOUR
T1 - Seebeck and Nernst effects in the mixed state of κ-(BEDT-TTF)2Cu(NCS)2
AU - Sasaki, T.
AU - Ozawa, H.
AU - Koakutsu, M.
AU - Fukase, T.
N1 - Funding Information:
3.2. Nernst effect The Seebeck effect is mainly due to the diffusion of quasiparticles in a temperature gradient. On the other hand, the transverse thermomagnetic effect, Nernst effect, is causedb y the thermal diffusion of vortices. Force balance equation between the thermal and the viscus damping force on the flux-line gives the relation Ev/VsT = p2S’+/@o. The observation is well explained by this equation. The resultant 5’4 is in agreement with that estimated in Seebeck effect. Pronounced thermal fluctuation effect is observed around T,(H). The details are describedi n elsewhere[ 8]. The authors would like to thank ProfessorK . Kadowaki for providing BiaSreCaCueOss ingle crystals, and Professor I. Terasaki, Dr. G. Yu. Logvenov and Dr. M. Kartsovnik for valuable discussionsT. his work was partially supported by Grant-in-Aid for Scientific Researchf rom the Ministry of Education, Sciencea nd Culture of Japan.
PY - 1999/6/24
Y1 - 1999/6/24
N2 - A comparative study of the Seebeck and Nernst effects in the mixed state of the organic superconductor κ-(BEDT-TTF)2Cu(NCS)2 is reported. The Seebeck effect data can be explained well by an extended two-fluid counterflow picture proposed by Huebener et al. Anomalous behavior of the Seebeck effect reported so far is not intrinsic but results from the artificial misalignment of the sample. From the Nernst effect data, the transport entropy of magnetic-flux lines is obtained. This value agrees with that obtained from another way of the Seebeck effect measurements. Due to the pronounced fluctuation effect around Tc(H), there is a finite value of the transport entropy at T > Tc(H).
AB - A comparative study of the Seebeck and Nernst effects in the mixed state of the organic superconductor κ-(BEDT-TTF)2Cu(NCS)2 is reported. The Seebeck effect data can be explained well by an extended two-fluid counterflow picture proposed by Huebener et al. Anomalous behavior of the Seebeck effect reported so far is not intrinsic but results from the artificial misalignment of the sample. From the Nernst effect data, the transport entropy of magnetic-flux lines is obtained. This value agrees with that obtained from another way of the Seebeck effect measurements. Due to the pronounced fluctuation effect around Tc(H), there is a finite value of the transport entropy at T > Tc(H).
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U2 - 10.1016/S0379-6779(98)00867-4
DO - 10.1016/S0379-6779(98)00867-4
M3 - Conference article
AN - SCOPUS:0033138248
SN - 0379-6779
VL - 103
SP - 1944
EP - 1945
JO - Synthetic Metals
JF - Synthetic Metals
IS - 1-3
T2 - Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98)
Y2 - 12 July 1998 through 18 July 1998
ER -