235 citations · 354 across the 5 of their papers we have counts for
5 papers
Pressure-Driven Quantum Criticality and T/H Scaling in the Icosahedral Au-Al-Yb Approximant
Shuya Matsukawa, Kazuhiko Deguchi, Keiichiro Imura +2
We report on ac magnetic susceptibility measurements under pressure of the Au-Al-Yb alloy, a crystalline approximant to the icosahedral quasicrystal that shows unconventional quant…
Crystal Structure of Superconducting 1/1 Cubic Au-Ge-Yb Approximant with Tsai-Type Cluster
Kazuhiko Deguchi, Mika Nakayama, Shuya Matsukawa +4
We report the synthesis of a single-phase sample of the superconducting crystalline approximant Au64.0Ge22.0Yb14.0 and present a structure model refined by Rietveld analysis for X-…
Superconductivity of Au-Ge-Yb Approximants with Tsai-Type Clusters
Kazuhiko Deguchi, Mika Nakayama, Shuya Matsukawa +4
We report the emergence of bulk superconductivity in Au64.0Ge22.0Yb14.0 and Au63.5Ge20.5Yb16.0 below 0.68 and 0.36 K, respectively. This is the first observation of superconductivi…
Valence Change Driven by Constituent Element Substitution in the Mixed-Valence Quasicrystal and Approximant Au-Al-Yb
Shuya Matsukawa, Katsumasa Tanaka, Mika Nakayama +6
Quantum criticality has been considered to be specific to crystalline materials such as heavy fermions. Very recently, however, the Tsai-type quasicrystal Au51Al34Yb15 has been rep…
Quantum critical state in a magnetic quasicrystal
Kazuhiko Deguchi, Shuya Matsukawa, Noriaki K. Sato +4
Quasicrystals are metallic alloys that possess long-range, aperiodic structures with diffraction symmetries forbidden to conventional crystals. Since the discovery of quasicrystals…