AUTHOR=Chen Minnan , Wu Jiangtao , Huang Qing , Jiao Jinlong , Dun Zhiling , Wang Guohua , Chen Zhiwei , Lin Gaoting , Rathinam Vasudevan , Li Cangjin , Pei Yanzhong , Ye Feng , Zhou Haidong , Ma Jie 

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

JOURNAL=Frontiers in Physics

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2021.785801

DOI=10.3389/fphy.2021.785801

ISSN=2296-424X

ABSTRACT=<p>We have performed combined elastic neutron diffuse, electrical transport, specific heat, and thermal conductivity measurements on the quasi–one-dimensional Ba<sub>3</sub>Co<sub>2</sub>O<sub>6</sub>(CO<sub>3</sub>)<sub>0.7</sub> single crystal to characterize its transport properties. A modulated superstructure of polyatomic CO<sub>3</sub><sup>2−</sup> 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.</p>