Search Results - "Niitaka, S."

Unconventional s-Wave Superconductivity in Fe(Se,Te) by Hanaguri, T, Niitaka, S, Kuroki, K, Takagi, H

“…The superconducting state is characterized by a pairing of electrons with a superconducting gap on the Fermi surface. In iron-based superconductors, an…”
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Superconductivity in an electron band just above the Fermi level: possible route to BCS-BEC superconductivity by Okazaki, K., Ito, Y., Ota, Y., Kotani, Y., Shimojima, T., Kiss, T., Watanabe, S., Chen, C.-T., Niitaka, S., Hanaguri, T., Takagi, H., Chainani, A., Shin, S.

“…Conventional superconductivity follows Bardeen-Cooper-Schrieffer(BCS) theory of electrons-pairing in momentum-space, while superfluidity is the Bose-Einstein…”
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A-type antiferro-orbital ordering with I4(1)/a symmetry and geometrical frustration in the spinel vanadate MgV2O4 by Niitaka, S, Ohsumi, H, Sugimoto, K, Lee, S, Oshima, Y, Kato, K, Hashizume, D, Arima, T, Takata, M, Takagi, H

“…We conduct a detailed structural analysis of the S=1 pyrochlore antiferromagnet MgV2O4, which exhibits an antiferromagnetic ordering marginally at TN=40  K,…”
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Crystal structure and dielectric and magnetic properties of BiCrO3 as a ferroelectromagnet by Niitaka, S., Azuma, M., Takano, M., Nishibori, E., Takata, M., Sakata, M.

“…We have investigated crystal structure, dielectric and magnetic properties of BiCrO3. The structure of BiCrO3 at room temperature is a highly distorted…”
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Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2 by Katayama, N, Uchida, M, Hashizume, D, Niitaka, S, Matsuno, J, Matsumura, D, Nishihata, Y, Mizuki, J, Takeshita, N, Gauzzi, A, Nohara, M, Takagi, H

“…We investigate LiVS2 and LiVSe2 with a triangular lattice as itinerant analogues of LiVO2 known for the formation of a valence-bond solid (VBS) state out of an…”
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Spin-Orbit Fluctuations in Frustrated Heavy-Fermion Metal LiV2O4 by Tomiyasu, K, Iwasa, K, Ueda, H, Niitaka, S, Takagi, H, Ohira-Kawamura, S, Kikuchi, T, Inamura, Y, Nakajima, K, Yamada, K

“…Spin fluctuations were studied over a wide momentum (hQ) and energy (E) space in the frustrated d-electron heavy-fermion metal LiV2O4 by time-of-flight…”
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Correlation-driven heavy-fermion formation in LiV2O4 by Jönsson, P E, Takenaka, K, Niitaka, S, Sasagawa, T, Sugai, S, Takagi, H

“…Optical reflectivity measurements were performed on a single crystal of the d-electron heavy-fermion (HF) metal LiV2O4. Our results evidence the highly…”
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Do all nuclei recoil on photoemission in compounds? by Suga, S, Sekiyama, A, Fujiwara, H, Nakatsu, Y, Miyamachi, T, Imada, S, Baltzer, P, Niitaka, S, Takagi, H, Yoshimura, K, Yabashi, M, Tamasaku, K, Higashiya, A, Ishikawa, T

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Neutron scattering study of Fe(Se1-xTex)0.92(x=0.75,1) by Iikubo, S., Fujita, M., Niitaka, S., Takagi, H., Ohtani, H., Hasebe, M.

“…Magnetic fluctuations of Fe(Se1-xTex)0.92(x=0.75,1) are investigated by using neutron scattering technique. Non-superconducting FeTe0.92 shows a pronounced…”
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High-field magnetization study of the heavy fermion oxide LiV2O4 by Niitaka, S, Nishikawa, K, Kimura, S, Narumi, Y, Kindo, K, Hagiwara, M, Takagi, H

“…High-field magnetizations of heavy fermion oxide LiV2O4 single crystals and Li0.9Zn0.1V2O4 powder were investigated up to 65T with pulsed magnets. LiV2O4…”
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Study of optical response of spinel oxide by utilizing IR-THz spectromicroscopy by Shimai, K., Irizawa, A., Sato, K., Iizuka, K., Nishiyama, M., Nanba, T., Niitaka, S., Takagi, H.

“…We performed a spectromicroscopic measurement on LiV2O4 in IR-THz (25meV–1.5eV) from 6–300K under high pressures up to 20GPa by using a DAC at the…”
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EXAFS study of LiV2O4 under high pressure by Dragoe, N., Pinsard-Gaudart, L., Itie, J. P., Congeduti, A., Roy, P., Niitaka, S., Takagi, H., Lagarde, P., Flank, A. M.

“…The EXAFS analysis of LiV 2 O 4 , under pressure, is discussed. Subtle changes observable above 13 GPa suggest that a charge-ordering state is induced at high…”
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Neutron Powder Diffraction Study on the Crystal and Magnetic Structures of BiCoO3 by Belik, Alexei A, Iikubo, Satoshi, Kodama, Katsuaki, Igawa, Naoki, Shamoto, Shin-ichi, Niitaka, Seiji, Azuma, Masaki, Shimakawa, Yuichi, Takano, Mikio, Izumi, Fujio, Takayama-Muromachi, Eiji

“…The crystal and magnetic structures of polycrystalline BiCoO3 have been determined by the Rietveld method from neutron diffraction data measured at…”
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Crystal structure and dielectric and magnetic properties of BiCrO 3 as a ferroelectromagnet by Niitaka, S., Azuma, M., Takano, M., Nishibori, E., Takata, M., Sakata, M.

“…We have investigated crystal structure, dielectric and magnetic properties of BiCrO 3. The structure of BiCrO 3 at room temperature is a highly distorted…”
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A -Type Antiferro-Orbital Ordering with I 4 1 / a Symmetry and Geometrical Frustration in the Spinel Vanadate MgV 2 O 4 by Niitaka, S., Ohsumi, H., Sugimoto, K., Lee, S., Oshima, Y., Kato, K., Hashizume, D., Arima, T., Takata, M., Takagi, H.

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Spin-Orbit Fluctuations in Frustrated Heavy-Fermion Metal LiV 2 O 4 by Tomiyasu, K., Iwasa, K., Ueda, H., Niitaka, S., Takagi, H., Ohira-Kawamura, S., Kikuchi, T., Inamura, Y., Nakajima, K., Yamada, K.

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Evidence for a cos  ( 4 φ ) Modulation of the Superconducting Energy Gap of Optimally Doped FeTe 0.6 Se 0.4 Single Crystals Using Laser Angle-Resolved Photoemission Spectroscopy by Okazaki, K., Ito, Y., Ota, Y., Kotani, Y., Shimojima, T., Kiss, T., Watanabe, S., Chen, C. -T., Niitaka, S., Hanaguri, T., Takagi, H., Chainani, A., Shin, S.

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Anomalous Metallic State in the Vicinity of Metal to Valence-Bond Solid Insulator Transition in LiVS 2 by Katayama, N., Uchida, M., Hashizume, D., Niitaka, S., Matsuno, J., Matsumura, D., Nishihata, Y., Mizuki, J., Takeshita, N., Gauzzi, A., Nohara, M., Takagi, H.

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Correlation-Driven Heavy-Fermion Formation in LiV 2 O 4 by Jönsson, P. E., Takenaka, K., Niitaka, S., Sasagawa, T., Sugai, S., Takagi, H.

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Spin-orbit fluctuations in frustrated heavy-fermion metal LiV(2)O(4) by Tomiyasu, K, Iwasa, K, Ueda, H, Niitaka, S, Takagi, H, Ohira-Kawamura, S, Kikuchi, T, Inamura, Y, Nakajima, K, Yamada, K

“…Spin fluctuations were studied over a wide momentum (ℏQ) and energy (E) space in the frustrated d-electron heavy-fermion metal LiV_{2}O_{4} by time-of-flight…”
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