Butsuri

Online ISSN : 2423-8872
Print ISSN : 0029-0181
ISSN-L : 0029-0181

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Volume 71, Issue 2

Displaying 1-23 of 23 articles from this issue

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[title in Japanese]

Article type: Cover
2016 Volume 71 Issue 2 Pages Cover1-
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_Cover1

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Thoughts on Undergraduate Students and JPS as the Vice President

Toshi-Aki Shibata

Article type: Article
2016 Volume 71 Issue 2 Pages 73-
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_73

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[title in Japanese]

Article type: Index
2016 Volume 71 Issue 2 Pages 74-75
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_74

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High Temperature Superconductivity from Sulfur Hydride(Topic)

Katsuya Shimizu

Article type: Article
2016 Volume 71 Issue 2 Pages 76-77
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_76

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Intrinsically Disordered Protein : A New Picture for Protein(Trend)

Junichi Higo

Article type: Article
2016 Volume 71 Issue 2 Pages 78-79
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_78

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Left-Right Symmetry Breaking of Animal Body Plan : Research on Snails may Reveal Common Mechanisms(Interdisciplinary)

Masanori Abe, Reiko Kuroda

Article type: Article
2016 Volume 71 Issue 2 Pages 80-86
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_80

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The left-right (l-r) asymmetry of animal body structure including the internal visceral organs is established during embryogenesis which is regulated genetically. Recently, several unique mechanisms have been identified based on the work with different model organisms. Although diverse, they have similarities between distant phyla as well. Snails are unique as the l-r symmetry breaking occurs at a very early embryogenic stage, which is dictated by a single gene locus. They have common pathways as vertebrates towards the later developmental stage, although they exhibit mechanisms unique to invertebrates at earlier stages. Thus, snails are ideal model organisms for studying the establishment of l-r asymmetric body plan.

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Revealing Collisionless Heating of Electrons at the Supernova Remnant Shock Wave with X-Ray Spectroscopy of Non-Equilibrium Plasmas(Research)

Hiroya Yamaguchi

Article type: Article
2016 Volume 71 Issue 2 Pages 87-92
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_87

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Although collisionless shocks are ubiquitous in astrophysics, their fundamental properties are still poorly understood. In particular, the process known as collisionless electron heating is one of the main open issues in astrophysical shock physics. Here we present Suzaku deep observations of Tycho's supernova remnant, revealing the first robust evidence for efficient collisionless heating of electrons at the reverse shock of a young supernova remnant. This discovery has been achieved by the detailed spectroscopic diagnostics of non-equilibrium plasmas using our state-of-the-art atomic physics models. We detect Fe Kβ (3p→1s) fluorescence emission at 〜7.1 keV, which is expected only from low-ionization plasma where Fe ions still have multiple 3p electrons. Comparison with our hydrodynamical simulations requires the electron temperature at the reverse shock front to be more than 10 keV, about 1,000 times higher than expected from Coulomb collisions alone.

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Topological Insulating Phase in Direct Transition Band Gap Semiconductor Heterostructures(Research)

Kyoichi Suzuki, Koji Onomitsu

Article type: Article
2016 Volume 71 Issue 2 Pages 93-98
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_93

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InAs/GaSb heterostructures, which are comprised of direct transition band semiconductors, are promising for a new type of two-dimensional topological insulator (TI). Due to the hybridization between the adjacent InAs conduction and GaSb valence bands, conduction-valence band inverted structures are formed artificially. This is in contrast with the other topological insulators (TIs) confirmed so far, which have the band inversion in their materials by nature. We confirmed a two-dimensional topological insulating phase in InAs/GaSb heterostructures by means of nonlocal resistance measurements. By taking advantage of highly-developed semiconductor technologies, the investigation of fundamental properties in two-dimensional TIs and of their applications will be promoted. In addition, our results open the possibility of new TIs emerging from the combination of various materials.

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High-Temperature Superconductivity in Atomic-Layer FeSe Films(Research)

Kosuke Nakayama, Takafumi Sato, Takashi Takahashi

Article type: Article
2016 Volume 71 Issue 2 Pages 99-103
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_99

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We report angle-resolved photoemission spectroscopy (ARPES) study on atomic-layer FeSe films grown on SrTiO_3 substrate. We observed that a monolayer film shows superconductivity with the onset temperature of 60 K. We also found that potassium (K) deposition onto the film enables the systematic control of carrier concentration. By using this method, we have succeeded in converting non-superconducting as-grown multilayer films into a high-temperature superconductor. We have established the electronic phase diagram of FeSe film and revealed an important role of interface for realizing the high-temperature superconductivity.

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 104-107
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_104

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[title in Japanese]

[in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 108-110
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_108

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[title in Japanese]

[in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 111-112
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_111

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 113-115
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_113

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[title in Japanese]

[in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 116-117
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_116

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[title in Japanese]

[in Japanese]

2016 Volume 71 Issue 2 Pages 118-126
Published: 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_118

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[title in Japanese]

[in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 127-128
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_127

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[title in Japanese]

[in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 129-
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_129

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[title in Japanese]

[in Japanese]

Article type: Article
2016 Volume 71 Issue 2 Pages 130-
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_130

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[title in Japanese]

Article type: Appendix
2016 Volume 71 Issue 2 Pages 131-133
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_131

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[title in Japanese]

Article type: Appendix
2016 Volume 71 Issue 2 Pages 134-
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_134

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[title in Japanese]

[in Japanese]

2016 Volume 71 Issue 2 Pages 135-
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_135_1

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[title in Japanese]

Article type: Appendix
2016 Volume 71 Issue 2 Pages 136-
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_136_1

JOURNAL FREE ACCESS

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[title in Japanese]

Article type: Appendix
2016 Volume 71 Issue 2 Pages 139-140
Published: February 05, 2016
Released on J-STAGE: July 20, 2018

DOIhttps://doi.org/10.11316/butsuri.71.2_139

JOURNAL FREE ACCESS

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