Nonlinear Optical Spectroscopy on One-Dimensional Excitons in Silicon Polymer, Polysilane. (9999)
Hasegawa, T., Iwasa, Y., Sunamura, H., Koda, T., Tokura, Y.
#L027243 The nine independent stiffness constants of injection-molded tensile bars of poly(phenylene sulfide) reinforced with 30 and 40% by weight of carbon or glass fibers have been measured by...
Resonance Enhancement Effect in Non-Linear Optical Susceptibility of Polysilanes. (9999)
Iwasa, Y., Hasegawa, T., Koda, T., Tokura, Y., Tachibana, H.
We have investigated the \X(3)(-3 omega; omega, omega, omega)\ spectra of polysilane films by means of third-harmonic generation. The fundamental photon energy is scanned from 0.56 to 2.2 eV. The...
Dispersion relation in the Third-Order Electric Susceptibility for Polysilane Film. (9999)
Kishida, H., Hasegawa, T., Iwasa, Y., Koda, T., Tokura, Y.
FOUND TO BE IN GOOD
Nakamura, H., Tomita, H., Akimoto, H., Matsumura, R., Inoue, I. H., Hasegawa, T., ...
Electrostatic carrier doping using a field-effect-transistor structure is an intriguing approach to explore electronic phases by critical control of carrier concentration. We demonstrate the...
Megabits secure key rate quantum key distribution (2008)
Zhang, Q., Takesue, H., Honjo, T., Wen, K., Hirohata, T., Suyama, M., ...
Quantum cryptography (QC) can provide unconditional secure communication between two authorized parties based on the basic principles of quantum mechanics. However, imperfect practical conditions...
Ebata, K., Takizawa, M., Fujimori, A., Kuwahara, H., Tomioka, Y., Tokura, Y.
We have studied the effects of band filling and bandwidth control on the chemical potential in perovskite manganites $R_{1-x}A_x$MnO$_3$ ($R$ : rare earth, $A$ : alkaline earth) by measurements of...
Sakai, H., Ito, K., Nishiyama, T., Yu, X. Z., Matsui, Y., Miyasaka, S., ...
Versatile features of impurity doping effects on perovskite manganites, $R_{0.6}$Sr$_{0.4}$MnO$_{3}$, have been investigated with varying the doing species as well as the $R$-dependent one-electron...
Charge dynamics in thermally and doping induced insulator-metal transitions of (Ti1-xVx)2O3 (2008)
Uchida, M., Fujioka, J., Onose, Y., Tokura, Y.
Charge dynamics of (Ti1-xVx)2O3 with x=0-0.06 has been investigated by measurements of charge transport and optical conductivity spectra in a wide temperature range of 2-600K with the focus on the...
Electrically driven single electron spin resonance in a slanting Zeeman field (2008)
Pioro-Ladriere, M., Obata, T., Tokura, Y., Kubo, T., Yoshida, K., ...
The rapidly rising fields of spintronics and quantum information science have led to a strong interest in developing the ability to coherently manipulate electron spins. Electron spin resonance (ESR)...
Signature of Magnetic Phase Separation in the Ground State of Pr1-xCaxMnO3 (2008)
Sha, Hao, Ye, F., Dai, Pengcheng, Fernandez-Baca, J. A., Mesa, D., Lynn, J. W., ...
Neutron scattering has been used to investigate the evolution of the long- and short-range charge-ordered (CO), ferromagnetic (FM), and antiferromagnetic (AF) correlations in single crystals of...
Fujioka, J., Miyasaka, S., Tokura, Y.
The doping variation of charge and orbital dynamics in perovskite-type Y1-xCaxVO3 (0
Current-induced persistent magnetization in a relaxorlike manganite (2008)
A single crystal of 7% Fe-doped (La$_{0.7}$Pr$_{0.3}$)$_{0.65}$Ca$_{0.35}$MnO$_3$ shows up as a typical relaxor ferromagnet, where ferromagnetic metallic and charge-orbital-ordered insulating...
Lopes, A. M. L., Araujo, J. P., Amaral, V. S., Correia, J. G., Tomioka, Y., Tokura, Y.
A detailed study of the electric field gradient (EFG) across the Pr1-xCaxMnO3 phase diagram and its temperature dependence is given. Clearly, distinct EFG behaviours for samples outside/inside the...
Seki, S., Onose, Y., Tokura, Y.
Correlation between dielectric and magnetic properties was investigated on the triangular lattice antiferromagnets ACrO2 (A= Cu, Ag, Li, or Na) showing 120-degree spiral spin structure with easy-axis...
Crystal-field level inversion in lightly Mn-doped Sr3Ru2O7 (2008)
Hossain, M. A., Hu, Z., Haverkort, M. W., Burnus, T., Chang, C. F., Klein, S., ...
Sr3(Ru1-xMnx)2O7, in which 4d-Ru is substituted by the more localized 3d-Mn, is studied by x-ray dichroism and spin-resolved density functional theory. We find that Mn impurities do not exhibit the...
Seki, S., Yamasaki, Y., Soda, M., Matsuura, M., Hirota, K., Tokura, Y.
Measurements of polarized neutron scattering were performed on a $S=1/2$ chain multiferroic LiCu$_2$O$_2$. In the ferroelectric ground state with the spontaneous polarization along the c-axis, the...
Demkó, L., Kézsmárki, I., Mihály, G., Takeshita, N., Tomioka, Y., Tokura, Y.
We have studied the bandwidth-temperature-magnetic field phase diagram of RE(0.55)Sr(0.45)MnO(3) colossal magnetoresistance manganites with ferromagnetic metallic (FM) ground state. The bandwidth (or...
Electrically driven spin excitation in a ferroelectric magnet DyMnO_3 (2007)
Kida, N., Ikebe, Y., Takahashi, Y., He, J. P., Kaneko, Y., Yamasaki, Y., ...
Temperature (5--250 K) and magnetic field (0--70 kOe) variations of the low-energy (1--10 meV) electrodynamics of spin excitations have been investigated for a complete set of light-polarization...
Ebata, K., Takizawa, M., Maekawa, K., Fujimori, A., Kuwahara, H., Tomioka, Y., ...
We have studied the chemical potential shift as a function of temperature in Nd$_{1-x}$Sr$_x$MnO$_3$ (NSMO) by measurements of core-level photoemission spectra. For ferromagnetic samples ($x=0.4$ and...
Fe-doping-induced evolution of charge-orbital ordering in a bicritical-state manganite (2007)
Sakai, H., Ito, K., Kumai, R., Tokura, Y.
Impurity effects on the stability of a ferromagnetic metallic state in a bicritical-state manganite, (La0.7Pr0.3)0.65Ca0.35MnO3, on the verge of metal-insulator transition have been investigated by...
Kezsmarki, I., Tomioka, Y., Miyasaka, S., Demko, L., Okimoto, Y., Tokura, Y.
We present a systematic optical study for a bandwidth-controlled series of nearly half doped colossal magnetoresistive manganites RE$_{0.55}$AE$_{0.45}$MnO$_3$ (RE and AE being rare earth and...
Orbital Domain Dynamics in a Doped Manganite (2007)
Turner, J. J., Thomas, K. J., Hill, J. P., Pfeifer, M., Chesnel, K., Tomioka, Y., ...
The coupling of multiple degrees of freedom - charge, spin, and lattice - in manganites has mostly been considered at the microscopic level. However, on larger length scales, these correlations may...
Lambert, N., Mahboob, I., Pioro-Ladrière, M., Tokura, Y., Tarucha, S., Yamaguchi, H.
Magnetically coupling a nano-mechanical resonator to a double quantum dot confining two electrons can enable the manipulation of a single electron spin and the readout of the resonator's natural...
The nanoscale phase separation in hole-doped manganites (2007)
A macroscopic phase separation, in which ferromagnetic clusters are observed in an insulating matrix, is sometimes observed, and believed to be essential to the colossal magnetoresistive (CMR)...
Iwaya, K., Satow, S., Hanaguri, T., Shannon, N., Yoshida, Y., Ikeda, S. I., ...
The local spectroscopic signatures of metamagnetic criticality in Sr3Ru2O7 were explored using scanning tunneling microscopy (STM). Singular features in the tunneling spectrum were found close to the...
Ebata, K., Hashimoto, M., Tanaka, K., Fujimori, A., Tomioka, Y., Tokura, Y.
We have studied the temperature dependence of the photoemission spectra of Pr$_{1-x}$Ca$_x$MnO$_3$ (PCMO) with $x=0.25$, 0.3 and 0.5. For $x=0.3$ and 0.5, we observed a gap in the low-temperature...
Chi, Songxue, Ye, F., Dai, Pengcheng, Fernandez-Baca, J. A., Huang, Q., Lynn, J. W., ...
We use neutron scattering to study the lattice and magnetic structure of the layered half-doped manganite Pr$_{0.5}$Ca$_{1.5}$MnO$_4$. On cooling from high temperature, the system first becomes...
Mathieu, R., He, J. P., Kaneko, Y., Yoshino, H., Asamitsu, A., Tokura, Y.
The ac-susceptibility of the electron doped single-layered manganite La$_{1.1}$Sr$_{0.9}$MnO$_4$ is analyzed in detail. A quasi two-dimensional (2$D$) antiferromagnetic (AFM) order with Ising...
Quantum criticality and disorder in the antiferromagnetic critical point of NiS$_{2}$ pyrite (2007)
Takeshita, N., Takashima, S., Terakura, C., Nishikubo, H., Miyasaka, S., Nohara, M., ...
A quantum critical point (QCP) between the antiferromagnetic and the paramagnetic phases was realized by applying a hydrostatic pressure of ~ 7 GPa on single crystals of NiS_{2} pyrite with a low...
Yu, X. Z., Mathieu, R., Arima, T., Kaneko, Y., He, J. P., Uchida, M., ...
Structural features of the charge/orbital ordering (CO/OO) in single-layered manganites Pr1-xCa1+xMnO4 have been investigated systematically by transmission electron microscopy. Analyses of electron...
Resonance in Optimally Electron-Doped Superconductor Nd$_{1.85}$Ce$_{0.15}$CuO$_{4-\delta}$ (2007)
Zhao, Jun, Dai, Pengcheng, Li, Shiliang, Freeman, Paul G., Onose, Y., Tokura, Y.
We use inelastic neutron scattering to probe magnetic excitations of an optimally electron-doped superconductor Nd$_{1.85}$Ce$_{0.15}$CuO$_{4-\delta}$ above and below its superconducting transition...
Ye, F., Dai, Pengcheng, Fernandez-Baca, J. A., Adroja, D. T., Perring, T. G., Tomioka, Y., ...
Using time-of-flight and triple-axis inelastic neutron spectroscopy, we determine spin wave excitations throughout the Brillouin zone for ferromagnetic manganites La$_{1-x}$Ca$_x$MnO$_3$...
Optical probe of electrostatic doping in an n-type Mott insulator (2007)
Nakamura, M., Sawa, A., Sato, H., Akoh, H., Kawasaki, M., Tokura, Y.
Electrostatic doping into an $n$-type Mott insulator Sm$_{2}$CuO$_{4}$ has been successfully achieved with use of the heterojunction with an $n$-type band semiconductor Nb-doped SrTiO$_{3}$. The...
Polarons and confinement of electronic motion to two dimensions in a layered manganite (2007)
Ronnow, H. M., Renner, C., Aeppli, G., Kimura, T., Tokura, Y.
A remarkable feature of layered transition-metal oxides-most famously, the high-temperature superconductors-is that they can display hugely anisotropic electrical and optical properties (for example,...
Electric Control of Spin Helicity in a Magnetic Ferroelectric (2007)
Yamasaki, Y., Sagayama, H., Goto, T., Matsuura, M., Hirota, K., Arima, T., ...
Magnetic ferroelectrics or multiferroics, which are currently extensively explored, may provide a good arena to realize a novel magnetoelectric function. Here we demonstrate the genuine electric...
Mathieu, R., He, J. P., Yu, X. Z., Kaneko, Y., Uchida, M., Lee, Y. S., ...
The relationship between orbital and spin degrees of freedom in the single-crystals of the hole-doped Pr$_{1-x}$Ca$_{1+x}$MnO$_4$, 0.3 $\leq$ $x$ $\leq$ 0.7, has been investigated by means of...
Ye, F, Dai, P, Fernandez-Baca, JA, Adroja, DT, Perring, TG, Tomioka, Y, ...
Micro-magnets for coherent control of spin-charge qubit in lateral quantum dots (2006)
Pioro-Ladriere, M., Tokura, Y., Obata, T., Kubo, T., Tarucha, S.
A lateral quantum dot design for coherent electrical manipulation of a two-level spin-charge system is presented. Two micron-size permanent magnets integrated to high-frequency electrodes produce a...
Impurity-doping induced ferroelectricity in frustrated antiferromagnet CuFeO2 (2006)
Seki, S., Yamasaki, Y., Shiomi, Y., Iguchi, S., Onose, Y., Tokura, Y.
Dielectric responses have been investigated on the triangular-lattice antiferromagnet CuFeO2 and its site-diluted analogs CuFe1-xAlxO2 (x=0.01 and 0.02) with and without application of magnetic...
Interference through quantum dots (2006)
Tokura, Y., Nakano, H., Kubo, T.
We discuss the effect of quantum interference on transport through a quantum dot system. We introduce an indirect coherent coupling parameter alpha, which provides constructive/destructive...
A hidden constant in the anomalous Hall effect of a high-purity magnet MnSi (2006)
Lee, Minhyea, Onose, Y., Tokura, Y., Ong, N. P.
Measurements of the Hall conductivity in MnSi can provide incisive tests of theories of the anomalous Hall (AH) effect, because both the mean-free-path and magnetoresistance (MR) are unusually large...
Miyasato, T., Abe, N., Fujii, T., Asamitsu, A., Onoda, S., Onose, Y., ...
Anomalous Hall effect (AHE) and anomalous Nernst effect (ANE) in a variety of ferromagnetic metals including pure metals, oxides, and chalcogenides, are studied to obtain unified understandings of...
Low temperature metallic state induced by electrostatic carrier doping of SrTiO$_3$ (2006)
Nakamura, H., Inoue, I. H., Takahashi, Y., Hasegawa, T., Tokura, Y., Takagi, H.
Transport properties of SrTiO$_3$-channel field-effect transistors with parylene organic gate insulator have been investigated. By applying gate voltage, the sheet resistance falls below $R_{\Box}$...
Bandwidth-disorder phase diagram of half doped layered manganites (2006)
Mathieu, R., Uchida, M., Kaneko, Y., He, J. P., Yu, X. Z., Kumai, R., ...
Phase diagrams in the plane of $r_A$ (the average ionic radius, related to one-electron bandwidth $W$) and $\sigma^2$ (the ionic radius variance, measuring the quenched disorder), or...
Ebata, K., Wadati, H., Takizawa, M., Fujimori, A., Chikamatsu, A., Kumigashira, H., ...
We have studied the chemical potential shift and changes in the electronic density of states near the Fermi level ($E_F$) as a function of carrier concentration in Pr$_{1-x}$Ca$_x$MnO$_3$ (PCMO, $0.2...
Lee, Y. S., Onoda, S., Arima, T., Tokunaga, Y., He, J. P., Kaneko, Y., ...
We report on the in-plane anisotropy of the electronic response in the spin/charge/orbital ordered phase of a half-doped layered-structure manganite. The optical conductivity spectra for a single...
Neutron diffraction study of YVO3, NdVO3, and TbVO3 (2006)
Reehuis, M., Ulrich, C., Pattison, P., Ouladdiaf, B., Rheinstadter, M. C., Ohl, M., ...
The structural and magnetic properties of YVO3, NdVO3 and TbVO3 were investigated by single-crystal and powder neutron diffraction. YVO3 shows a structural phase transition at 200 K from an...
Topwal, Dinesh, Sarma, DD, Kato, H, Tokura, Y, Avignon, M
We have synthesized the solid solution $Sr_2Fe_1_+_xMo_1_-_xO_6$ with $–1 \leq x \leq 0.25$, the composition x=0 corresponding to the well-known double-perovskite system $Sr_2FeMoO_6$. We report...
Arima, T., Tokunaga, A., Goto, T., Kimura, H., Noda, Y., Tokura, Y.
Lattice modulation and magnetic structures in magnetoelectric compounds Tb1-xDyxMnO3 have been studied around the ferroelectric (FE) Curie temperature T_C by x-ray and neutron diffraction....
Determination of the mechanism for resonant scattering in LaMnO3 (2006)
Shen, Q., Elfimov, I. S., Fanwick, P., Tokura, Y., Kimura, T., Finkelstein, K., ...
The resonant multiple Bragg x-ray diffraction is used to study the forbidden (10 (4) over bar) reflection in LaMnO3. Using the interference between the three-beam scattering and resonant scattering...
Determination of the mechanism for resonant scattering in LaMnO3 (2006)
Shen, Q., Elfimov, I. S., Fanwick, P., Tokura, Y., Kimura, T., Finkelstein, K., ...
The resonant multiple Bragg x-ray diffraction is used to study the forbidden (10 (4) over bar) reflection in LaMnO3. Using the interference between the three-beam scattering and resonant scattering...
Determination of the mechanism for resonant scattering in LaMnO3 (2006)
Shen, Q., Elfimov, I. S., Fanwick, P., Tokura, Y., Kimura, T., Finkelstein, K., ...
The resonant multiple Bragg x-ray diffraction is used to study the forbidden (10 (4) over bar) reflection in LaMnO3. Using the interference between the three-beam scattering and resonant scattering...
Topwal, Dinesh, Sarma, DD, Kato, H, Tokura, Y, Avignon, M
We have synthesized the solid solution $Sr_2Fe_1_+_xMo_1_-_xO_6$ with $–1 \leq x \leq 0.25$, the composition x=0 corresponding to the well-known double-perovskite system $Sr_2FeMoO_6$. We report...
Neutron diffraction study of YVO3, NdVO3, and TbVO3 (2006)
Reehuis, M., Ulrich, C., Pattison, P., Ouladdiaf, B., Rheinstädter, M. C., Ohl, M., ...
The structural and magnetic properties of YVO3, NdVO3 and TbVO3 were investigated by single-crystal and powder neutron diffraction. YVO3 shows a structural phase transition at 200 K from an...
Evolution of spin-wave excitations in ferromagnetic metallic manganites (2005)
Ye, F., Dai, Pengcheng, Fernandez-Baca, J. A., Sha, Hao, Lynn, J. W., Kawano-Furukawa, H., ...
Neutron scattering results are presented for spin-wave excitations of three ferromagnetic metallic $A_{1-x}A^{\prime}_{x}$MnO$_3$ manganites (where $A$ and $A^\prime$ are rare- and alkaline-earth...
Magnetic properties of Sr_2Fe_1+xMo_1-xO_6 with -1 (2005)
Topwal, Dinesh, Sarma, D. D., Kato, H., Tokura, Y., Avignon, M.
We have synthesized the solid solution, Sr_2Fe_1+xMo_1-xO_6 with -1
Ronnow, H. M., Renner, Ch., Aeppli, G., Kimura, T., Tokura, Y.
A very remarkable feature of the layered transition metal oxides (TMOs), whose most famous members are the high-temperature superconductors (HTSs), is that even though they are prepared as bulk...
Sun, Z., Fedorov, A. V., Douglas, J. F., Reznik, D., Weber, F., ...
Using Angle-Resolved Photoemission (ARPES), we present the first observation of sharp quasiparticle-like peaks in a CMR manganite. We focus on the ($\pi$,0) regions of k-space and study their...
Impurity-induced transition to a Mott insulator in Sr$_3$Ru$_2$O$_7$ (2005)
Mathieu, R., Asamitsu, A., Kaneko, Y., He, J. P., Yu, X. Z., Kumai, R., ...
The electrical, magnetic, and structural properties of Sr$_3$(Ru$_{1-x}$Mn$_x$)$_2$O$_7$ (0 $\leq x \leq$ 0.2) are investigated. The parent compound Sr$_3$Ru$_2$O$_7$ is a paramagnetic metal,...
Change in lattice modulation upon gigantic magnetoelectric transition in GdMnO3 and TbMnO3 (2005)
Arima, T., Goto, T., Yamasaki, Y., Miyasaka, S., Ishii, K., Tsubota, M., ...
Single-crystal synchrotron x-ray diffraction measurements in strong magnetic fields have been performed for magnetoelectric compounds GdMnO3 and TbMnO3. It has been found that the P || a...
Determination of the intrinsic anomalous Hall effect of SrRuO$_3$ (2005)
Mathieu, R., Jung, C. U., Yamada, H., Asamitsu, A., Kawasaki, M., Tokura, Y.
The anomalous Hall effect (AHE) of epitaxial SrRuO$_3$ films with varying lattice parameters is investigated, and analyzed according to the Berry-phase scenario. SrRuO$_3$ thin films were deposited...