pp58_34.pdf 266 KB
Sakakibara, H. Department of Engineering Science, The University of Electro-Communications Researchers DB KAKEN
Suzuki, K. Department of Applied Physics, The University of Tokyo
Usui, H. Department of Physics, Osaka University
Kuroki, K. Department of Physics, Osaka University
Arita, R. Department of Applied Physics, The University of Tokyo / JST, PRESTO
Aoki, H. Department of Physics, The University of Tokyo
flucutuation exchange approximation(FLEX)
Application of physical pressure on the cuprate superconductors often results in an enhancement of Tc. Motivated by this fact, we study the chemical pressure effect on the single-layered La2CuO4 and HgBa2CuO4 starting from the two-orbital Hubbard model deduced from a first-principles calculation. It is shown that the chemical pressure effects induced by La-site substitution in La2CuO4 or Hg-site substitution in HgBa2CuO4 are not expected to be effective for raising Tc.
© 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
H. Sakakibara, K. Suzuki, H. Usui, K. Kuroki, R. Arita and H. Aoki. Theoretical study of the chemical pressure effect on Tc in the cuprate superconductors. Physics Procedia. 2014, 58, 34-37. 26th International Symposium on Superconductivity(ISS 2013)
Faculty of Engineering/Graduate School of Engineering