Search Results - "Shirahama, Keiya"

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    4D-XY Superfluid Transition and Dissipation in 4He Confined in Nanoporous Media by Tani, Tomoyuki, Nago, Yusuke, Murakawa, Satoshi, Shirahama, Keiya

    Published in Journal of the Physical Society of Japan (15-01-2022)
    “…4He confined in nanoporous Gelsil glass is a unique, strongly correlated Bose system exhibiting quantum phase transition (QPT) by controlling pressure…”
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    Evidence for 4D XY Quantum Criticality in 4He Confined in Nanoporous Media at Finite Temperatures by Tani, Tomoyuki, Nago, Yusuke, Murakawa, Satoshi, Shirahama, Keiya

    Published in Journal of the Physical Society of Japan (01-03-2021)
    “…4He confined in nanoporous media is a model Bose system that exhibits quantum phase transition (QPT) by varying pressure. We have precisely determined the…”
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    4He in Nanoporous Media: 4D XY Quantum Criticality at Finite Temperatures by Tani, Tomoyuki, Nago, Yusuke, Murakawa, Satoshi, Shirahama, Keiya

    “…We review our study of critical phenomena in superfluid 4 He confined in nanoporous glasses. 4 He in nanoporous media is an ideal ground to survey the quantum…”
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    A Compact Rotating 1K Cryostat for Helium 4 Studies by Makiuchi, Takahiko, Murakawa, Satoshi, Shirahama, Keiya

    Published in Journal of low temperature physics (01-06-2017)
    “…Recent studies of rotating superfluid 3 He and 4 He had led to construct massive rotating refrigerators. We have built, on the other hand, a compact,…”
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    Gigantic maximum of nanoscale noncontact friction by Saitoh, Kohta, Hayashi, Kenichi, Shibayama, Yoshiyuki, Shirahama, Keiya

    Published in Physical review letters (01-12-2010)
    “…We report measurements of noncontact friction between surfaces of NbSe2 and SrTiO3 and a sharp Pt-Ir tip that is oscillated laterally by a quartz tuning fork…”
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    Discontinuous Growth of Solid 4He on Graphene by Koga, Aaron M, Shibayama, Yoshiyuki, Shirahama, Keiya

    Published in Journal of the Physical Society of Japan (01-09-2013)
    “…We have studied the growth of solid 4 He on multilayer graphene immersed in the superfluid well below the bulk freezing pressure using the torsional oscillator…”
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    Elastic Anomaly of Thin Neon Film by Makiuchi, Takahiko, Yamashita, Katsuyuki, Tagai, Michihiro, Nago, Yusuke, Shirahama, Keiya

    Published in Journal of the Physical Society of Japan (15-03-2019)
    “…Adsorbed molecular films provide two-dimensional systems that show various emergent phenomena that are not observed in bulk counterparts. We have measured the…”
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    Anomalous Response of 4He Confined in Nanoporous Media to Torsional Oscillation by Yoshimura, Hitomi, Higashino, Rama, Shibayama, Yoshiyuki, Shirahama, Keiya

    Published in Journal of low temperature physics (01-11-2012)
    “…The existence of “Non-Classical Rotational Inertia (NCRI)” in solid 4 He below 0.2 K has been controversial and interpreted by a number of different theories…”
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    4He in Nano-porous Media: Superfluidity and Quantum Phase Transition by Shirahama, Keiya

    Published in Journal of low temperature physics (01-03-2007)
    “…This paper reviews recent findings of novel phenomena in 4He confined to a nano-porous glass. We examined pressure–temperature (P-T) phase diagram of 4He…”
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    Layer by Layer Growth of Solid 4He on Graphite down to 0.1 K by Koga, Aaron M., Shibayama, Yoshiyuki, Shirahama, Keiya

    Published in Journal of low temperature physics (01-03-2012)
    “…The growth of solid 4 He on graphite from the superfluid phase is known to occur at pressures well below the bulk solidification point. The number of adsorbed…”
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    Localized Bose-Einstein Condensation of 4He Confined in Nanoporous Media by Shirahama, Keiya, Yamamoto, Keiichi, Shibayama, Yoshiyuki

    Published in Journal of the Physical Society of Japan (01-11-2008)
    “…4He confined in nanoporous media is an excellent model boson system in a confinement potential. We have studied the superfluid and thermodynamic properties of…”
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    Liquid-Solid Transition and Phase Diagram of 4He Confined in Nanoporous Glass by YAMAMOTO, Keiichi, SHIBAYAMA, Yoshiyuki, SHIRAHAMA, Keiya

    “…We have studied the liquid-solid (L-S) phase transition of 4He confined in nanoporous Gelsil glass that has interconnected nanopores of 2.5-nm diameter. The…”
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    Suppression of Superfluidity of 4He in a Nanoporous Glass by Preplating a Kr Layer by Shibayama, Yoshiyuki, Shirahama, Keiya

    Published in Journal of the Physical Society of Japan (01-08-2011)
    “…Helium in nanoporous media has attracted much interest as a model Bose system with disorder and confinement. Here we have examined how a change in porous…”
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    Superfluidity of 4He Confined in a Porous Glass and Control of the Pore Size by Shibayama, Yoshiyuki, Shirahama, Keiya

    Published in Journal of low temperature physics (01-09-2007)
    “…4He confined in nanoporous media is one of the most interesting nano-sized systems. The aim of the present work is control of the pore size of nanoporous media…”
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    Superfluidity of 4He Adsorbed on Nanoporous Activated Carbon Fibers by Shibayama, Yoshiyuki, Shirahama, Keiya

    Published in Journal of low temperature physics (01-09-2007)
    “…4He confined in nanoporous media is one of the most interesting nano-sized systems in the context of an interacting Bose system. In the present work, we study…”
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