activity
19982022
most citedScanning tunneling microscopy and spectroscopy of the electronic local density of states of graphite surfaces near monoatomic step edges

469 citations · 1.2k across the 33 of their papers we have counts for

collaborators

33 papers

cond-mat.other2022

Simulations of Surface X-ray Diffraction from a Monolayer 4He Film Adsorbed on Graphite

Atsuki Kumashita, Hiroo Tajiri, Akira Yamaguchi +7

We carried out simulations of crystal truncation rod (CTR) scatterings, i.e., one of the surface X-ray diffraction techniques with atomic resolution, from a monolayer He film adsor…

physics.ins-det2021★ 2 cited

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…

cond-mat.other2021★ 3 cited

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…

cond-mat.other2021★ 6 cited

Structural Study of Adsorbed Helium Films: New Approach with Synchrotron Radiation X-rays

Akira Yamaguchi, Hiroo Tajiri, Atsuki Kumashita +7

A few atomic layers of helium adsorbed on graphite have been attracting much attention as one of the ideal quantum systems in two dimension. Although previous reports on neutron di…

cond-mat.other2020★ 2 cited

Superconducting Niobium Calorimeter for Studies of Adsorbed Helium Monolayers

Jun Usami, Koki Tokeshi, Tomohiro Matsui +1

We developed a calorimeter with a vacuum container made of superconducting niobium (Nb) to study monolayers of helium adsorbed on graphite which are prototypical two-dimensional qu…

cond-mat.mes-hall2020★ 32 cited

Negative resistance state in superconducting NbSe induced by surface acoustic waves

Masahiko Yokoi, Satoshi Fujiwara, Tomoya Kawamura +5

We report a negative resistance, namely, a voltage drop along the opposite direction of a current flow, in the superconducting gap of NbSe thin films under the irradiation of s…