The Transport Properties of Quasi–One-Dimensional Ba3Co2O6(CO3)0.7

• Main Authors: Chen, M. (Author), Chen, Z. (Author), Dun, Z. (Author), Huang, Q. (Author), Jiao, J. (Author), Li, C. (Author), Lin, G. (Author), Ma, J. (Author), Pei, Y. (Author), Rathinam, V. (Author), Wang, G. (Author), Wu, J. (Author), Ye, F. (Author), Zhou, H. (Author)
• Format: Article
• Language: English
• Published: Frontiers Media S.A. 2021
• Subjects: carrier mobility; cobalt oxide; neutron diffuse; scattering mechanism; spin entropy; thermal conductivity
• Online Access: View Fulltext in Publisher

 We have performed combined elastic neutron diffuse, electrical transport, specific heat, and thermal conductivity measurements on the quasi–one-dimensional Ba3Co2O6(CO3)0.7 single crystal to characterize its transport properties. A modulated superstructure of polyatomic CO32− is formed, which not only interferes the electronic properties of this compound, but also reduces the thermal conductivity along the c-axis. Furthermore, a large magnetic entropy is observed to be contributed to the heat conduction. Our investigations reveal the influence of both structural and magnetic effects on its transport properties and suggest a theoretical improvement on the thermoelectric materials by building up superlattice with conducting ionic group. Copyright © 2021 Chen, Wu, Huang, Jiao, Dun, Wang, Chen, Lin, Rathinam, Li, Pei, Ye, Zhou and Ma.