978 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kyoto UniversityJP223 papers
- The University of TokyoJP53 papers
- The University of OsakaJP48 papers
- Kyoto Bunkyo UniversityJP45 papers
- Tohoku UniversityJP29 papers
- Japan Science and Technology AgencyJP26 papers
- Brookhaven National LaboratoryUS19 papers
- High Energy Accelerator Research OrganizationJP18 papers
- National Institute of Advanced Industrial Science and TechnologyJP18 papers
- Spintronics Research Network of JapanJP16 papers
- Korea Advanced Institute of Science and TechnologyKR13 papers
- Tokyo Institute of TechnologyJP13 papers
29 papers · 1 filter
CaCuRuO: a high Kondo-temperature transition metal oxide
D. Takegami, C. Y. Kuo, K. Kasebayashi +26
We present a comprehensive study of CaCuRuO using bulk sensitive hard and soft x-ray spectroscopy combined with local-density approximation (LDA) + dynamical mean-fi…
Direct visualization of three-dimensional shape of skyrmion strings in a noncentrosymmetric magnet
S. Seki, M. Suzuki, M. Ishibashi +6
Magnetic skyrmion, i.e. a topologically stable swirling spin texture, appears as a particle-like object in the two-dimensional (2D) systems, and has recently attracted attention as…
Observation of Devil's Staircase in the Novel Spin Valve System SrCoO
T. Matsuda, S. Partzsch, T. Tsuyama +7
Using resonant soft x-ray scattering as a function of both temperature and magnetic field, we reveal a large number of almost degenerate magnetic orders in SrCo6O11. The Ising-like…
Phonon anomalies and lattice dynamics in superconducting oxychlorides CaCuOCl
Matteo D'Astuto, Ikuya Yamada, Paola Giura +6
We present a comprehensive study of the phonon dispersion in an underdoped, superconducting CaCuOCl crystal. We interpret the results using lattice dynamical calcul…
A Comparison of Stripe Modulations in LaBaCuO and LaNdSrCuO
S. B. Wilkins, M. P. M. Dean, Jörg Fink +10
We report combined soft and hard x-ray scattering studies of the electronic and lattice modulations associated with stripe order in LaBaCuO and LaN…
Magnetic Frustration in a Mn Honeycomb Lattice Induced by Mn-O-O-Mn Pathways
H. Wadati, K. Kato, Y. Wakisaka +9
We investigated the electronic structure of layered Mn oxide Bi3Mn4O12(NO3) with a Mn honeycomb lattice by x-ray absorption spectroscopy. The valence of Mn was determined to be 4+…
Disordered Ground State and Magnetic Field-Induced Long-Range Order in an S=3/2 Antiferromagnetic Honeycomb Lattice Compound Bi3Mn4O12(NO3)
M. Matsuda, M. Azuma, M. Tokunaga +2
Bi3Mn4O12(NO3), in which the Mn4+ ions carry S=3/2, is the first honeycomb lattice system that shows no long-range magnetic order. Using neutron scattering, we have determined that…
Soft x-ray magnetic circular dichroism study of Ca_1-xSr_xRuO_3 across the ferromagnetic quantum phase transition
J. Okamoto, T. Okane, Y. Saitoh +10
Ca_1-xSr_xRuO_3, which is ferromagnetic for Sr concentration x > 0.3, has been studied by x-ray magnetic circular dichroism (XMCD) in Ru 3p and O 1s core-level x-ray absorption. XM…
A muon-spin relaxation study of BiMnO3
T. Lancaster, S. J. Blundell, P. J. Baker +5
We present the results of muon-spin relaxation measurements on ferromagnetic BiMnO3. Below T_C=98.0(1) K oscillations in the time-dependence of the muon polarization are observed,…
Angle-resolved photoemission studies of lattice polaron formation in the cuprate Ca2CuO2Cl2
K. M. Shen, F. Ronning, W. Meevasana +10
To elucidate the nature of the single-particle excitations in the undoped parent cuprates, we have performed a detailed study of Ca2CuO2Cl2 using photoemission spectroscopy. The ph…
59Co-NMR Probe for Stepwise Magnetization and Magnetotransport in SrCo6O11 with Metallic Kagome Layer and Triangular Lattice with Local Moments
Hidekazu Mukuda, Yoshio Kitaoka, Shintaro Ishiwata +4
We report on novel magnetic and electronic properties of SrCo6O11 that exhibits a unique stepwise magnetization and its relevant magnetotransport phenomena investigated by the site…
Absence of long-ranged charge order in at x=0.08
Şerban Smadici, Peter Abbamonte, Munetaka Taguchi +5
A periodic density of states (DOS) modulation (a "checkerboard pattern") was observed with STM in (NCCOC) [T. Hanaguri \emph{et al.}, N…
Dispersion of the high-energy phonon modes in NdCeCuO
M. Braden, L. Pintschovius, T. Uefuji +1
The dispersion of the high-energy phonon modes in the electron doped high-temperature superconductor NdCeCuO has been studied by inelastic neutron scattering.…
Valence changes associated with the metal-insulator transition in BiLaNiO
H. Wadati, M. Takizawa, T. T. Tran +9
Perovskite-type BiNiO is an insulating antiferromagnet in which a charge disproportionation occurs at the Bi site. La substitution for Bi suppresses the charge disproportionati…
Pressure/temperature/substitution-induced melting of A-site charge disproportionation in Bi_(1-x)La_(x)NiO_3 (0 =< x =< 0.5)
S. Ishiwata, M. Azuma, M. Hanawa +8
Metal-insulator transitions strongly coupled with lattice were found in Bi1-xLaxNiO3. Synchrotron X-ray powder diffraction revealed that pressure (P ~ 3 GPa, T = 300 K), temperatur…
Magnetic Phase Diagram of the Hole-doped CaNaCuOCl Cuprate Superconductor
K. Ohishi, I. Yamada, A. Koda +6
We report on the magnetic phase diagram of a hole-doped cuprate CaNaCuOCl, which is free from buckling of CuO planes, determined by muon spin rotation…
Room-temperature ferromagnetism in Sr_(1-x)Y_xCoO_(3-delta) (0.2 < x < 0.25)
W. Kobayashi, S. Ishiwata, I. Terasaki +4
We have measured magnetic susceptibility and resistivity of SrYCoO ( 0.1, 0.15, 0.2, 0.215, 0.225, 0.25, 0.3, and 0.4), and have found that SrYC…
Momentum anisotropy of the scattering rate in cuprate superconductors
A. Kaminski, H. M. Fretwell, M. R. Norman +12
We examine the momentum and energy dependence of the scattering rate of the high temperature cuprate superconductors using angle resolved photoemission spectroscopy. The scattering…
NMR characterization of spin-1/2 alternating antiferromagnetic chains in the high-pressure phase of (VO)2P2O7
J. Kikuchi, K. Motoya, T. Saito +2
Local-susceptibility measurements via the NMR shifts of P and V nuclei in the high-pressure phase of (VO)PO confirmed the existence of a unique alte…
Spin excitations in stripe-ordered La2-xSrxNiO4 (x=0.275 and 1/3)
A. T. Boothroyd, P. G. Freeman, D. Prabhakaran +5
We report neutron scattering measurements of the spectrum of magnetic excitations in the stripe-ordered phase of La2-xSrxNiO4 (x=0.275 and 1/3). The propagating spin excitations fo…
Commensurate spin dynamics in the superconducting state of an electron-doped cuprate superconductor
K. Yamada, K. Kurahashi, T. Uefuji +4
We report neutron scattering studies on single crystals of the electron-doped (n-type) superconducting cuprate Nd2-xCexCuO4 (x=0.15) with Tc = 18 K and 25 K. Unlike the hole-doped…
New Magnetic Excitations in the Spin-Density-Wave of Chromium
H. Hiraka, P. Boni, Y. Endoh +3
Low-energy magnetic excitations of chromium have been reinvestigated with a single-Q crystal using neutron scattering technique. In the transverse spin-density-wave phase a new typ…
Transmission-electron-microscopy study of charge-stripe order in La(1.725)Sr(0.275)NiO(4)
Jianqi Li, Yimei Zhu, J. M. Tranquada +2
We characterize the local structure and correlations of charge stripes in La(1.725)Sr(0.275)NiO(4) using transmission-electron microscopy. We present direct evidence that the strip…
Chemical potential shift in La(1-x)Sr(x)MnO(3): Photoemission test of the phase separation scenario
J. Matsuno, A. Fujimori, Y. Takeda +1
We have studied the chemical potential shift in La(1-x)Sr(x)MnO(3) as a function of doped hole concentration by core-level x-ray photoemission. The shift is monotonous, which means…