70 citations · 219 across the 7 of their papers we have counts for
7 papers
Picosecond Trajectory of Two-dimensional Vortex Motion in FeSeTe Visualized by Terahertz Second Harmonic Generation
Sachiko Nakamura, Haruki Matsumoto, Hiroki Ogawa +4
We have investigated the vortex dynamics in a thin film of an iron-based superconductor FeSeTe by observing second-harmonic generation (SHG) in the THz frequency ra…
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…
Nonreciprocal Terahertz Second Harmonic Generation in Superconducting NbN under Supercurrent Injection
Sachiko Nakamura, Kota Katsumi, Hirotaka Terai +1
Giant second-harmonic generation (SHG) in the terahertz (THz) frequency range is observed in a thin film of an s-wave superconductor NbN, where the time-reversal (-) a…
Specific heat, thermal conductivity, and magnetic susceptibility of cyanate ester resins --- An alternative to commonly used epoxy resins
Sachiko Nakamura, Takenori Fujii, Shoji Matsukawa +2
In low temperature experiments, resins have many applications as glues or thermal and electrical insulators. Cyanate ester resins (CEs) are a high-temperature compatible thermoset…
Infrared activation of the Higgs mode by supercurrent injection in superconducting NbN
Sachiko Nakamura, Yudai Iida, Yuta Murotani +3
Higgs mode in superconductors, i.e. the collective amplitude mode of the order parameter does not associate with charge nor spin fluctuations, therefore it does not couple to the e…
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…
Low temperature transport properties of pyrolytic graphite sheet
Sachiko Nakamura, Daisuke Miyafuji, Takenori Fujii +2
We have made thermal and electrical transport measurements of uncompressed pyrolytic graphite sheet (uPGS), a mass-produced thin graphite sheet with various thicknesses between 10…