4.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- RIKENJP217 papers
- The University of TokyoJP179 papers
- University of MichiganUS135 papers
- Japan Science and Technology AgencyJP81 papers
- Tokyo Institute of TechnologyJP26 papers
- Chinese Academy of SciencesCN25 papers
- Loughborough UniversityGB23 papers
- Nagoya UniversityJP23 papers
- Tsinghua UniversityCN23 papers
- University of Naples Federico IIIT22 papers
- Tohoku UniversityJP19 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT17 papers
27 papers · 2 filters
Orbital characters of three-dimensional Fermi surfaces in Eu2-xSrxNiO4 as probed by soft-x-ray angle-resolved photoemission spectroscopy
M. Uchida, K. Ishizaka, P. Hansmann +13
The three-dimensional Fermi surface structure of hole-doped metallic layered nickelate Eu2-xSrxNiO4 (x=1.1), an important counterpart to the isostructural superconducting cuprate L…
On the nature of the optical conductivity of polaron
G. De Filippis, V. Cataudella, A. S. Mishchenko +1
We study theoretically a fundamental issue in solids: the evolution of the optical spectra of polaron as the electron-phonon coupling increases. By comparing the exact results obta…
Subband structure of a two-dimensional electron gas formed at the polar surface of the strong spin-orbit perovskite KTaO
P. D. C. King, R. H. He, T. Eknapakul +13
We demonstrate the formation of a two-dimensional electron gas (2DEG) at the surface of the transition-metal oxide KTaO. From angle-resolved photoemission, we find…
Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe1.3Sb
Y. Shiomi, M. Mochizuki, Y. Kaneko +1
We report on a topological Hall effect possibly induced by scalar spin chirality in a quasi-two- dimensional helimagnet FeSb. In the low-temperature region where the spins…
Imaging Oxygen Defects and their Motion at a Manganite Surface
Benjamin Bryant, Christoph Renner, Yusuke Tokunaga +2
Manganites are technologically important materials, used widely as solid oxide fuel cell cathodes: they have also been shown to exhibit electroresistance. Oxygen bulk diffusion and…
Detection of a charged two-level system by using the Kondo and the Fano-Kondo effects in quantum dots
Tetsufumi Tanamoto, Yu-xi Liu, Xuedong Hu +1
The Kondo effect and the Fano-Kondo effect are important phenomena that have been observed in quantum dots (QDs). We theoretically investigate the transport properties of a coupled…
Skyrmion quantum numbers and quantized pumping in two dimensional topological chiral magnets
Bohm-Jung Yang, Naoto Nagaosa
We investigate the general conditions to achieve the adiabatic charge and spin polarizations and quantized pumping in 2D magnetic insulators possessing inhomogeneous spin structure…
Steady-state solution for dark states using a three-level system in coupled quantum dots
Tetsufumi Tanamoto, Keiji Ono, Franco Nori
Quantum dots (QDs) are one of the promising candidates of interconnection between electromagnetic field and electrons in solid-state devices. Dark states appear as a result of cohe…
Polaronic metal in lightly doped high-Tc cuprates
A. S. Mishchenko, N. Nagaosa, K. M. Shen +3
We present a combined study of the angle-resolved-photoemission spectroscopy (ARPES) and quantum Monte Carlo simulations to propose a novel polaronic metallic state in underdoped c…
Optical conductivity of the Holstein polaron
Glen L. Goodvin, Andrey S. Mishchenko, Mona Berciu
The Momentum Average approximation is used to derive a new kind of non-perturbational analytical expression for the optical conductivity (OC) of a Holstein polaron at zero temperat…
Theory of spin-phonon coupling in multiferroic Mn perovskites
Masahito Mochizuki, Nobuo Furukawa, Naoto Nagaosa
Magnetoelectric phase diagrams of the rare-earth (R) Mn perovskites RMnO3 are theoretically studied by focusing on crucial roles of the symmetric magnetostriction or the Peierls-ty…
Origin of the large polarization in multiferroic YMnO thin films revealed by soft and hard x-ray diffraction
H. Wadati, J. Okamoto, M. Garganourakis +9
We investigated the magnetic structure of an orthorhombic YMnO3 thin film by resonant soft x-ray and hard x-ray diffraction. We observed a temperature-dependent incommensurate magn…
Chirality of Matter Shows Up via Spin Excitations
Sandor Bordacs, Istvan Kezsmarki, David Szaller +10
Right- and left-handed circularly polarized light interact differently with electronic charges in chiral materials. This asymmetry generates the natural circular dichroism and gyro…
Anomalous Hall Effect in Ferromagnetic Metals: Role of Phonons at Finite Temperature
Atsuo Shitade, Naoto Nagaosa
The anomalous Hall effect in a multiband tight-binding model is numerically studied taking into account both elastic scattering by disorder and inelastic scattering by the electron…
Complex magnetism and magnetic field-driven electrical polarization in CoTeO
M. Hudl, R. Mathieu, S. A. Ivanov +8
The magnetic and electrical properties of CoTeO single-crystals with corundum related structure reveal a magnetic-field induced polarization below 21 K. A sharp peak in the…
Versatile helimagnetic phases under magnetic fields in cubic perovskite SrFeO3
S. Ishiwata, M. Tokunaga, Y. Kaneko +7
A helical spin texture is of great current interest for a host of novel spin-dependent transport phenomena. We report a rich variety of nontrivial, helimagnetic phases in the simpl…
Magnetically-Driven Ferroelectric Atomic Displacements in perovskite like YMnO3
D. Okuyama, S. Ishiwata, Y. Takahashi +9
Magnetically-driven ferroelectric atomic displacements of the order of 10_3$ by a single-crystal synchrotr…
Mott-insulator to metal transition in filling-controlled SmMnAsO_{1-x}
Y. Shiomi, S. Ishiwata, Y. Taguchi +1
Transport and magnetic properties have been systematically investigated for SmMnAsO_{1-x} with controlled electron-doping. As the electron band-filling is increased with the increa…
Projective studies of spin nematics in a quantum frustrated ferromagnet
Ryuichi Shindou, Seiji Yunoki, Tsutomu Momoi
We study the ground state properties of the spin-1/2 frustrated ferromagnetic J1-J2 Heisenberg model on the square lattice, employing projected BCS wavefunctions with spin-triplet…
Theory of Raman Scattering in One-Dimensional Quantum Spin-1/2 Antiferromagnets
Masahiro Sato, Hosho Katsura, Naoto Nagaosa
We study theoretically the Raman scattering spectra in the one-dimensional (1D) quantum spin-1/2 antiferromagnets. The analysis reveals that their low-energy dynamics is exquisitel…
Ferromagnetic Enhancement of CE-type Spin Ordering in (Pr,Ca)MnO
S. Y. Zhou, Y. Zhu, M. C. Langner +12
We present resonant soft X-ray scattering (RSXS) results from small band width manganites (Pr,Ca)MnO, which show that the CE-type spin ordering (SO) at the phase boundary is st…
Dynamical magnetoelectric effects in multiferroic oxides
Y. Tokura, N. Kida
Multiferroics with coexistent ferroelectric and magnetic orders can provide an interesting laboratory to test unprecedented magnetoelectric responses and their possible application…
Magnetic-field induced competition of two multiferroic orders in a triangular-lattice helimagnet MnI2
T. Kurumaji, S. Seki, S. Ishiwata +4
Magnetic and dielectric properties with varying magnitude and direction of magnetic field H have been investigated for a triangular lattice helimagnet MnI2. The in-plane electric p…
Thermoelectric response in the incoherent transport region near Mott transition: the case study of La1-xSrxVO3
M. Uchida, K. Oishi, M. Matsuo +7
We report a systematic investigation on the high-temperature thermoelectric response in a typical filling-control Mott transition system La1-xSrxVO3. In the vicinity of the Mott tr…