A5068554216- Quantum and electron transport phenomena
- Physics of Superconductivity and Magnetism
- Topological Materials and Phenomena
- Atomic and Subatomic Physics Research
- Mechanical and Optical Resonators
- Cold Atom Physics and Bose-Einstein Condensates
- Electronic and Structural Properties of Oxides
- Intermetallics and Advanced Alloy Properties
- Titanium Alloys Microstructure and Properties
- Adipose Tissue and Metabolism
- Fatigue and fracture mechanics
- Quantum optics and atomic interactions
- Superconductivity in MgB2 and Alloys
- Metal Alloys Wear and Properties
- Muscle metabolism and nutrition
- Microstructure and Mechanical Properties of Steels
- Nonlinear Dynamics and Pattern Formation
- Photonic and Optical Devices
- Semiconductor Quantum Structures and Devices
- Psychological and Temporal Perspectives Research
- Magnetic confinement fusion research
- Syphilis Diagnosis and Treatment
- Sports Dynamics and Biomechanics
- biodegradable polymer synthesis and properties
- Grit, Self-Efficacy, and Motivation
Ritsumeikan University
2025
RIKEN Center for Emergent Matter Science
2021-2025
University of Tsukuba
2012-2024
Centre de Nanosciences et de Nanotechnologies
2024
Université Paris-Saclay
2024
Centre National de la Recherche Scientifique
2024
The University of Tokyo
2016-2022
Tokyo University of Pharmacy and Life Sciences
2019
Murata (Japan)
2015
Nagoya University
2010
Rats fed a semipurified diet supplemented with 3% (w/w) safflower oil [Saf, n-3 fatty acid deficient, high linoleic (18:2n-6)] through two generations exhibit decreased correct response ratios in brightness-discrimination learning test compared rats perilla [Per, α-linolenic (18:3n-3)]. This is associated DHA (22:6n-3)-to-arachidonic (20:4n-6) ratio brain lipids. In the first set of experiments, dietary was shifted from Saf to mixture 2.4% plus 0.6% after weaning (Saf-DHA), but all...
The Josephson junction (JJ) is an essential element of superconducting (SC) devices for both fundamental and applied physics. short-range coherent coupling two adjacent JJs forms Andreev molecule states (AMSs), which provide a new ingredient to engineer exotic SC phenomena such as topological qubits. Here we tunneling spectroscopy measurements on device consisting electrically controllable planar sharing single electrode. We discover that spectra in the coupled JJ are highly modulated from...
Abstract Short-range coherent coupling of two Josephson junctions (JJs) are predicted to generate a supercurrent in one JJ nonlocally modulated by the phase difference other. We report on observation nonlocal effect double InAs nanowires as experimental evidence coupling. measure sharing superconducting electrode with other and observe switching current oscillation control difference. Our result will contribute engineer novel phenomena short-range
A Josephson junction (JJ) is a key device for developing superconducting circuits, wherein supercurrent in the JJ controlled by phase difference between two electrodes. When JJs sharing one electrode are coherently coupled and form Andreev molecules, of expected to be nonlocally another JJ. Here, we evaluate as function local nonlocal differences. Consequently, results exhibit that control generates finite even when zero. In addition, an offset giving ground state depends on difference....
We report on the fabrication and electrical characterization of an InAs double-nanowire (NW) device consisting two closely placed parallel NWs coupled to a common superconducting electrode one side individual normal metal leads other. In this new type we detect Cooper-pair splitting (CPS) with sizeable efficiency correlated currents in both NWs. contrast earlier experiments, where CPS was realized single NW, demonstrating intrawire electron pairing mediated by superconductor (SC), our...
We demonstrated dominant Cooper pair splitting in a ballistic double nanowire Josephson junction.
We detect in real time inter-dot tunneling events a weakly coupled two electron double quantum dot GaAs. At finite magnetic fields, we observe characteristic times, T_d and T_b, belonging to, respectively, direct blocked (spin-flip-assisted) tunneling. The latter corresponds to lifting of Pauli spin blockade the times ratio eta=T_b/T_d characterizes efficiency. find pronounced changes behavior eta upon increasing field, with increasing, saturating again. explain this as due crossover...
We report on half-integer Shapiro steps observed in an InAs nanowire Josephson junction. the of short ballistic junction and found anomalous addition to conventional integer steps. The disappear as temperature increases or transmission decreases. These experimental results agree closely with numerical calculation response for skewed current phase relation a
Abstract Unconventional quasiparticles emerging in the fractional quantum Hall regime 1,2 present challenge of observing their exotic properties unambiguously. Although charge has been demonstrated for nearly three decades 3–5 , first convincing evidence anyonic statistics only recently obtained 6,7 and, so far, so-called scaling dimension that determines propagation dynamics remains elusive. In particular, although nonlinearity tunnelling quasiparticle current should reveal dimension,...
We investigated the effect of royal jelly (RJ), a natural secretion from worker bees, on endurance training-induced mitochondrial adaptations in skeletal muscles ICR mice. Mice received either RJ (1.0 mg/g body weight) or distilled water for three weeks. The mice training group were subjected to (20 m/min; 60 min; 5 times/week). There was main maximal activities enzymes, citrate synthase (CS), and β-hydroxyacyl coenzyme Adehydrogenase (β-HAD), plantaris tibialis anterior (TA) muscles, while...
We report strong electron-electron interactions in quantum wires etched from an InAs well, a material generally expected to have spin-orbit interactions. find that the current through as function of bias voltage and temperature follows universal scaling behavior Tomonaga-Luttinger liquid. Using formula, we extract interaction parameter interactions, increasing become more depleted. establish theoretically cause only minor modifications this regime, indicating genuinely are indeed achieved...
The Josephson junction of a strong spin-orbit material under magnetic field is promising Majorana fermion candidate. Supercurrent enhancement by has been observed in the InAs nanowire junctions and assigned to topological transition. In this work we observe similar phenomenon but discuss nontopological origin considering trapping quasiparticles vortices that penetrate superconductor finite field. This assignment supported hysteresis switching current when sweeping up down Our experiment...
The charge transport of a (Tomonaga-)Luttinger liquid with tunnel barriers exhibits universal scaling: the current-voltage curves measured at various temperatures collapse into single curve upon rescaling. exponent characterizing this can be used to extract strength electron-electron interaction. Motivated by recent experiment on InAs nanowires [Sato et al., Phys. Rev. B 99, 155304 (2019)], we theoretically investigate analogous behavior spin-orbit-coupled Luttinger liquid. We find that...
The Josephson junction (JJ) is an essential element of superconducting (SC) devices for both fundamental and applied physics. short-range coherent coupling two adjacent JJs forms the Andreev molecule states (AMSs), which will provide a new ingredient to engineer SC transport in control qubits. However, no experimental evidence AMSs coupled has been reported. Here we tunnel spectroscopic results electrically controllable planar sharing one electrode. We discover that JJ are highly modulated...
Abstract Poly-β-hydroxybutyrate (PHB) in cyanobacteria, which accumulates as energy and carbon sources through the action of photosynthesis, is expected to substitute for petroleum-based plastics. This study first demonstrated that PHB accumulation was induced, with appearance lipid droplets, sulfur (S)-starved cells a cyanobacterium, Synechocystis sp. PCC 6803, however, lower level than nitrogen (N)- or phosphorus (P)-starved cells. Concomitantly found repression total cellular proteins...
We report on measurements of the ac Josephson effect in three-dimensional topological insulator (TI) junctions with Fermi energy tuning using a back gate. successfully tune into bulk gap TI. observe that as function gate voltage has dip feature, indicating presence specular Andreev reflections. study detection both Shapiro steps and emission. The obtained results show no signature Majorana modes. With support simulations, we conclude observation fractional may be complicated by large...
A Josephson junction (JJ) is a key device in the development of superconducting circuits, wherein supercurrent JJ controlled by phase difference between two electrodes. Recently, it has been shown that current nonlocally another nearby via coherent coupling. Here, we use nonlocal control to engineer anomalous effect. We observe produced even without any local difference, using quantum interference device. The simultaneously generates an offset giving ground state. These results provide novel...
Fatigue properties of a bearing steel (SUJ 2) including long life region were experimentally examined under axial loading and discussed from viewpoints fractography fracture mechanics. Thus, the complicated S-N property in wide was well explained as duplex characteristics superimposed two different curves for surface induced interior inclusion fracture. Fish-eye formed on each specimen Fine granular area (FGA) necessarily observed around at center fish-eye. Stress intensity factor ranges...