2018/03/28 by Yasuhito Matsubayashi, Kaori Sugii, Hishiro T. Hirose +5 · 15 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Coupling (piping) #Cyclotron #De Haas–van Alphen effect #Fermi Gamma-ray Space Telescope #Fermi level #Fermi surface #Metal #Nuclear materials and radiation effects #Superconductivity #Symmetry (geometry) #Topological Materials and Phenomena #cond-mat.str-el
paper · pdf · doi:10.7566/jpsj.87.053702
published in Journal of the Physical Society of Japan 87(5), 053702 (Physical Society of Japan) · 5 pages, 4 figures, J. Phys. Soc. Jpn, in press
arxiv created 2018/03/28 · openalex created_date 2018/04/06 · openalex publication_date 2018/04/11 · arxiv updated 2018/04/20 · openalex updated_date 2026/08/05
The superconducting pyrochlore oxide Cd2Re2O7 shows a structural transition with inversion symmetry breaking (ISB) at Ts1 = 200 K. A recent theory [L. Fu, Phys. Rev. Lett. 115, 026401 (2015)] suggests that the origin is an electronic instability that leads to a multipolar order in the spin-orbit-coupled metal. To observe the Fermi surface of the low-temperature phase of Cd2Re2O7, we perform de Haas-van Alphen effect measurements by means of magnetic torque. In reference to a calculated band structure, the spin-split Fermi surfaces with large cyclotron masses of 5-9m0 are revealed. The splitting is suggested to be due to an antisymmetric spin-orbit coupling induced by ISB, the strength of which is estimated to be approximately 67 K, which is rather smaller than those of typical non-centrosymmetric metals.