1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The Graduate University for Advanced Studies, SOKENDAIJP143 papers
- National Institutes of Natural SciencesJP76 papers
- The University of TokyoJP75 papers
- The University of OsakaJP59 papers
- Kyoto UniversityJP52 papers
- Tohoku UniversityJP46 papers
- Japan Science and Technology AgencyJP32 papers
- Nagoya UniversityJP30 papers
- Hiroshima UniversityJP27 papers
- High Energy Accelerator Research OrganizationJP26 papers
- RIKENJP26 papers
- Tokyo Institute of TechnologyJP26 papers
23 papers · 1 filter
Prerequisites for relevant spectral density and convergence of reduced density matrices at low temperatures
Akihito Ishizaki
Hierarchical equations of motion approach with the Drude-Lorentz spectral density has been widely employed in investigating quantum dissipative phenomena. However, it is often comp…
Tensile deformations of the magnetic chiral soliton lattice probed by Lorentz transmission electron microscopy
G. W. Paterson, A. A. Tereshchenko, S. Nakayama +6
We consider the case of a chiral soliton lattice subjected to uniaxial elastic strain applied perpendicular to the chiral axis and derive through analytical modelling the phase dia…
Ultrafast creation of overlapping Rydberg electrons in an atomic BEC and Mott-insulator lattice
Michiteru Mizoguchi, Yichi Zhang, Masaya Kunimi +13
An array of ultracold atoms in an optical lattice (Mott insulator) excited to a state where single electron wave-functions spatially overlap would represent a new and ideal platfor…
Element-selective tracking ultrafast demagnetization process in Co/Pt multilayer thin films by the resonant magneto-optical Kerr effect
Kohei Yamamoto, Souliman El Moussaoui, Yasuyuki Hirata +8
We examined the photo-induced dynamics of ferromagnetic Co/Pt thin films demonstrating perpendicular magnetic anisotropy with element specificity using resonant polar magneto-optic…
Wilson loop and Wilczek-Zee phase from a non-Abelian gauge field
Seiji Sugawa, Francisco Salces-Carcoba, Yuchen Yue +2
Quantum states can acquire a geometric phase called the Berry phase after adiabatically traversing a closed loop, which depends on the path not the rate of motion. The Berry phase…
Engineering quantum wave-packet dispersion with a strong nonresonant femtosecond laser pulse
Hiroyuki Katsuki, Yukiyoshi Ohtsuki, Toru Ajiki +2
A non-dispersing wave packet has been attracting much interest from various scientific and technological viewpoints. However, most quantum systems are accompanied by anharmonicity,…
Multilayer Effects in Bi2Sr2Ca2Cu3O10+z Superconductors
Giulio Vincini, Setsuko Tajima, Shigeki Miyasaka +1
We discuss the characteristic features of triple Cu-O2 layer cuprates superconductors, by comparing those of single and double layer cuprates superconductors. After a brief introdu…
Non-Fermi-liquid behavior and doping asymmetry in an organic Mott insulator interface
Yoshitaka Kawasugi, Kazuhiro Seki, Jiang Pu +4
High- superconductors show anomalous transport properties in their normal states, such as the bad-metal and pseudogap behaviors. To discuss their origins, it is importan…
Fermi level tuning of one-dimensional giant Rashba system on a semiconductor substrate: Bi/GaSb(110)-(2x1)
Takuto Nakamura, Yoshiyuki Ohtsubo, Naoki Tokumasu +10
We fabricated spin-polarized surface electronic states with tunable Fermi level from semiconductor to low-dimensional metal in the Bi/GaSb(110)-(21) surface using angle-res…
Simulating lattice thermal conductivity in semiconducting materials using high-dimensional neural network potential
Emi Minamitani, Masayoshi Ogura, Satoshi Watanabe
We demonstrate that a high-dimensional neural network potential (HDNNP) can predict the lattice thermal conductivity of semiconducting materials with an accuracy comparable to that…
Ultrafast Quantum-path Interferometry Revealing the Generation Process of Coherent Phonons
Kazutaka G. Nakamura, Kensuke Yokota, Yuki Okuda +5
Optical dual-pulse pumping actively creates quantum-mechanical superposition of the electronic and phononic states in a bulk solid. We here made transient reflectivity measurements…
Two-dimensional ground-state mapping of a Mott-Hubbard system in a flexible field-effect device
Yoshitaka Kawasugi, Kazuhiro Seki, Satoshi Tajima +5
A Mott insulator sometimes induces unconventional superconductivity in its neighbors when doped and/or pressurized. Because the phase diagram should be strongly related to the micr…
-wave superconducting gap observed in protect-annealed electron-doped cuprate superconductors PrLaCeCuO
M. Horio, K. Koshiishi, S. Nakata +11
For electron-doped cuprates, the strong suppression of antiferromagnetic spin correlation by efficient reduction annealing by the "protect-annealing" method leads to superconductiv…
Diffusion dynamics of supercooled water modeled with the cage-jump motion and hydrogen-bond rearrangement
Takuma Kikutsuji, Kang Kim, Nobuyuki Matubayasi
The slow dynamics of glass-forming liquids is generally ascribed to the cage-jump motion. In the cage-jump picture, a molecule remains in a cage formed by neighboring molecules, an…
Generation of pseudo-sunlight via quantum entangled photons and the interaction with molecules
Yuta Fujihashi, Ryosuke Shimizu, Akihito Ishizaki
Light incident upon molecules trigger fundamental processes in diverse systems present in nature. However, under natural conditions, such as sunlight illumination, it is impossible…
Precise determination of excitation energies in condensed-phase molecular systems based on exciton-polariton measurements
Nguyen Thanh Phuc, Akihito Ishizaki
The precise determination of the excitation energies in condensed-phase molecular systems is important for understanding system-environment interactions as well as for the prerequi…
Effect of Cu intercalation and pressure on excitonic interaction in 1T-TiSe2
Shunsuke Kitou, Akitoshi Nakano, Shintaro Kobayashi +9
1T-TiSe2 has a semimetallic band structure at room temperature and undergoes phase transition to a triple-q charge density wave (CDW) state with a commensurate superlattice structu…
Theory of standing spin waves in finite-size chiral spin soliton lattice
J. Kishine, Vl. E. Sinitsyn, I. G. Bostrem +4
We present a theory of standing spin wave (SSW) in a monoaxial chiral helimagnet. Motivated by experimental findings on the magnetic field-dependence of the resonance frequency in…
Temperature dependence of the electronic structure of A-site ordered perovskite CaCuTiO: Angle-integrated and -resolved photoemission studies
H. J. Im, T. Sakurada, M. Tsunekawa +3
We have investigated the electronic structure of A-site ordered CaCuTiO as a function of temperature by using angle-integrated and -resolved photoemission spectrosco…
Quantitative Comparison between Electronic Raman Scattering and Angle-Resolved Photoemission Spectra in BiSrCaCuO Superconductors: Doping Dependence of Nodal and Antinodal Superconducting Gaps
Kiyohisa Tanaka, Nguyen Trung Hieu, Giulio Vincini +4
Both electronic Raman scattering (ERS) and angle-resolved photoemission spectra (ARPES) revealed two energy scales for the gap in different momentum spaces in the cuprates. However…
Temperature-driven modification of surface electronic structure on bismuth, a topological border material
Y. Ohtsubo, Y. Yamashita, J. Kishi +7
Single crystalline bismuth (Bi) is known to have a peculiar electronic structure which is very close to the topological phase transition. The modification of the surface states of…
Photoexcitation of a polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)PF
T. Yamaguchi, K. Asada, H. Yamakawa +5
We theoretically revealed that a weak photoexcitation achieves the electric polarization-inversion with approximately of all the charges, which was interpreted as a superimp…
Classification of mobile- and immobile-molecule timescales for the Stokes-Einstein and Stokes-Einstein-Debye relations in supercooled water
Takeshi Kawasaki, Kang Kim
Molecular dynamics simulations have been performed on TIP4P/2005 supercooled water to investigate the molecular diffusion and shear viscosity at various timescales and assess the S…