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Article type: Cover
2011 Volume 66 Issue 12 Pages
Cover1-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Index
2011 Volume 66 Issue 12 Pages
Toc1-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Index
2011 Volume 66 Issue 12 Pages
Toc3-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
893-894
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Junsei Chiba
Article type: Article
2011 Volume 66 Issue 12 Pages
895-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Kazunari Shibata, Kiyoshi Ichimoto, Ayumi Asai
Article type: Article
2011 Volume 66 Issue 12 Pages
896-904
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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The latest view of the Sun is discussed with the results of the Japanese 3rd solar satellite Hinode. The coronal heating is the most important problem to be studied by Hinode. Has the coronal heating problem been solved? How much are sunspots and flares made clear with Hinode? Has Hinode discovered entirely new phenomenon which had never been predicted? In this article, we review the observational results with Hinode during recent 4 years after the launch in 2006.
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Norihiro Doshita, Kaori Kondo, Takahiro Iwata
Article type: Article
2011 Volume 66 Issue 12 Pages
905-913
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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One of the goals of the COMPASS experiment at CERN is to investigate the spin structure of a nucleon, which needs a highly polarized nucleon target with a considerable thickness along with a highly polarized muon beam. The largest ever polarized solid target containing 1 liter of the target material has been constructed for COMPASS, and the Dynamic Nuclear Polarization technique has been applied to realize the highest polarization of a proton and a deuteron at the temperature of 50mK and in the magnetic field of 2.5T. The techniques and the advantages of the COMPASS target are described in this report.
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Takashi Nakamura
Article type: Article
2011 Volume 66 Issue 12 Pages
914-919
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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The neutron halo is a weakly-bound exotic nuclear state where the valence neutrons are spatially decopuled from a tightly bound core, and has been found in the light neutron-rich nuclei with A (mass number)<20. In this article, the first experimental observation of a halo structure in ^<31>Ne, heavier than such known halo nuclei, is presented. I also discuss characteristic features of Coulomb breakup, which was used in this experiment, and of the observed soft E1 excitation as a unique property of neutron-halo nuclei. The current findings may provide a key to understand structures of heavier nuclei in the limit of stability.
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Masaya Nagai, Hideki Hirori, Koichiro Tanaka
Article type: Article
2011 Volume 66 Issue 12 Pages
919-922
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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We demonstrate the generation of intense monocycle THz pulse from a dielectric crystal excited by a tilted-pulse front ultrashort laser pulse. The generated THz pulse has maximum electric field above 100kV/cm, which approaches to the typical internal field in the material. This pulse also drives electrons, ions or molecules impulsively in anharmonic region, which can induce macroscopic motions essential for new material properties.
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Takeshi Kondo, Tsunehiro Takeuchi
Article type: Article
2011 Volume 66 Issue 12 Pages
923-927
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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The discovery of the pseudogap in the cuprates created significant excitement as it was believed to be a signature of pairing, in some cases above room temperature. Indeed, a number of experiments detected phase-fluctuating super-conductivity above the transition temperature T_c. However, several recent experiments reported that the pseudogap and superconducting state are characterized by different energy scales, and probably compete with each other, leaving open the question of whether the pseudogap is caused by pair formation. Here we report the discovery of a spectroscopic signature of pair formation and demonstrate that in a region commonly referred to as the pseudogap, two distinct states coexist: one that is due to pair formation and persists to an intermediate temperature T_<pair><T^* and a second-the 'proper' pseudogap-characterized by the loss of spectral weight and anomalies in transport properties that extends up to T^*. T_<pair> has a value around 120-150K even for materials with very different T_c values and it probably sets a limit on the highest attainable T_c in the cuprates.
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Minoru Yamashita, Takasada Shibauchi, Yuji Matsuda
Article type: Article
2011 Volume 66 Issue 12 Pages
928-932
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Quantum spin liquids (QSLs) are fluid-like states of spins realized by destroying its long-range ordered state by quantum fluctuation. In two-dimensional system, QSL may be realized under geometrical frustration. The ground state of QSL and its exotic phenomena, such as fractionalized excitation with an artificial gauge field, have been extensively discussed for decades, yet to be identified. We employ thermal transport measurements on newly discovered QSL candidates, κ-(BEDT-TTF)_2Cu_2(CN)_3 and EtMe_3Sb[Pd(dmit)_2]_2, and report that the two organic insulators possess different QSLs characterized by different elementary excitations. In κ-(BEDT-TTF)_2Cu_2(CN)_3, heat transport is thermally activated in low temperatures, suggesting presence of a spin gap in this QSL. In stark contrast, in EtMe_3Sb[Pd(dmit)_2]_2, a sizable temperature-linear term of thermal conductivity is clearly resolved in the zero-temperature limit, showing gapless excitation with long mean free path (〜1,000 lattice distances). The latter demonstrates a novel feature of QSL as a quantum condensed state with long-distance coherence.
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Arisato Kawabata
Article type: Article
2011 Volume 66 Issue 12 Pages
933-935
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Michinobu Mino, Masatoshi Namiki
Article type: Article
2011 Volume 66 Issue 12 Pages
936-938
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Seiji Takata, Sigeko Nisio
Article type: Article
2011 Volume 66 Issue 12 Pages
938-940
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Toru Moriya
Article type: Article
2011 Volume 66 Issue 12 Pages
940-942
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Atsuo Kuniba
Article type: Article
2011 Volume 66 Issue 12 Pages
943-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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[in Japanese]
Article type: Article
2011 Volume 66 Issue 12 Pages
944-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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[in Japanese]
Article type: Article
2011 Volume 66 Issue 12 Pages
944-945
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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[in Japanese]
Article type: Article
2011 Volume 66 Issue 12 Pages
945-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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[in Japanese]
Article type: Article
2011 Volume 66 Issue 12 Pages
946-948
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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[in Japanese]
Article type: Article
2011 Volume 66 Issue 12 Pages
948-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
949-954
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
954-955
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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[in Japanese]
2011 Volume 66 Issue 12 Pages
955-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
956-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
957-960
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
961-963
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
964-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Index
2011 Volume 66 Issue 12 Pages
i-vi
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Appendix
2011 Volume 66 Issue 12 Pages
vii-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Index
2011 Volume 66 Issue 12 Pages
viii-xii
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Index
2011 Volume 66 Issue 12 Pages
xiii-xiv
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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Article type: Index
2011 Volume 66 Issue 12 Pages
xv-
Published: December 05, 2011
Released on J-STAGE: October 22, 2019
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