27 citations · 84 across the 8 of their papers we have counts for
8 papers
Superconducting zinc heat switch for continuous nuclear demagnetization refrigerator and sub-mK experiments
Ryo Toda, Shohei Takimoto, Yuma Uematsu +2
We have developed and tested a zinc superconducting heat switch suitable for magnetic refrigeration and calorimetric experiments at sub-millikevin (sub-mK) temperatures. The specif…
Construction of Continuous Magnetic Cooling Apparatus with Zinc Soldered PrNi Nuclear Stages
Shohei Takimoto, Ryo Toda, Satoshi Murakawa +1
We report design details of the whole assembly of a compact and continuous nuclear demagnetization refrigerator (CNDR) with two PrNi nuclear stages, which can keep temperature…
A Simple Experimental Setup for Simultaneous Superfluid-response and Heat-capacity Measurements for Helium in Confined Geometries
Jun Usami, Ryo Toda, Sachiko Nakamura +2
Torsional oscillator (TO) is an experimental technique which is widely used to investigate superfluid responses in helium systems confined in porous materials or adsorbed on substr…
Performances of a Compact Shielded Superconducting Magnet for Continuous Nuclear Demagnetization Refrigerator
Shohei Takimoto, Ryo Toda, Satoshi Murakawa +1
We have successfully developed and tested a compact shielded superconducting (SSC) magnet with a FeCoV magnetic shield. This was developed for the PrNi based nuclear demagnetiz…
Pyrolytic Graphite Sheet, a New Adsorption Substrate for Superfluid Thin Films
Sachiko Nakamura, Daisuke Miyafuji, Ryo Toda +2
We have measured surface morphology and gas adsorption characteristics of uncompressed pyrolytic graphite sheet (uPGS) which is a candidate substrate for AC and DC superflow experi…
Emergent exotic superconductivity in artificially-engineered tricolor Kondo superlattices
M. Naritsuka, T. Ishii, S. Miyake +7
In the quest for exotic superconducting pairing states, the Rashba effect, which lifts the electron-spin degeneracy as a consequence of strong spin-orbit interaction (SOI) under br…
Tuning of magnetic quantum criticality in artificial Kondo superlattice CeRhIn5/YbRhIn5
T. Ishii, R. Toda, Y. Hanaoka +8
The effects of reduced dimensions and the interfaces on antiferromagnetic quantum criticality are studied in epitaxial Kondo superlattices, with alternating layers of heavy-fer…
Simultaneous Measurement of Torsional Oscillator and NMR of Very Dilute 3He in Solid 4He
Ryo Toda, Patryk Gumann, Kei Kosaka +3
We have investigated the NMR properties of dilute 3He impurities in solid 4He contained in a torsional oscillator (TO) by the simultaneous measurement of the NMR and the torsional…