Butsuri

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

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Volume 64, Issue 11

Displaying 1-38 of 38 articles from this issue

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[title in Japanese]

Article type: Cover
2009 Volume 64 Issue 11 Pages Cover1-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_Cover1

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[title in Japanese]

Article type: Index
2009 Volume 64 Issue 11 Pages Toc1-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_Toc1

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[title in Japanese]

Article type: Index
2009 Volume 64 Issue 11 Pages Toc2-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_Toc2

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Preface(Iron-based Superconductors)

[in Japanese]

Article type: Article
2009 Volume 64 Issue 11 Pages 807-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_807_1

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Iron-based Superconducting Materials: Current Status(Iron-based Superconductors)

Hideo Hosono, Satoru Matsuishi, Takatoshi Nomura, Hidenori Hiramatsu

Article type: Article
2009 Volume 64 Issue 11 Pages 807-817
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_807_2

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Superconductivity in iron pnictides was first reported on LaFePO in July 2006, followed by a report of LaFeAs_<1-x>F_x with T_c=26K in February 2008. These discoveries have rekindled the vital superconductivity research like the fever in high-T_c cuprates in late 1980s, and led to the publication of more than 1,000 papers to date. Although a variety of iron-based superconducting materials have been reported, these materials can be classified into 5-types of crystal structures. Each of them commonly contains the square lattice of Fe ion with a formal charge of +2, and each Fe^<2+> ion is tetrahedrally coordinated by pnictgens (As or P) or chalcogens which are located above and below the iron square lattice. In the present article, we describe the current status of these 5-types of iron-based superconducting materials and correlation between T_c and local structure with a background research on transition metal pnictides led to the discovery.

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Physical Properties on Fe-based Superconductors(Iron-based Superconductors)

Kenji Ishida, Taku J Sato, Takasada Shibauchi, Atsushi Fujimori

Article type: Article
2009 Volume 64 Issue 11 Pages 817-825
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_817

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The discovery of the iron-based superconductor LaFeAs (O_<1-x>F_x) by Kamihara, et al. had a great impact for condensed matter researchers, and a great deal of effort has been applied to understanding the physical properties and superconducting mechanism of the new resulting family of iron-based superconductors. In this article, the authors review their normal-state and superconducting properties investigated by four different experimental techniques (transport, photoemission, neutron scattering, and nuclear magnetic resonance), and discuss the relationship between experimental results and the unique band structure of the iron-based compounds.

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A Present Theoretical View of the Iron-based Superconductors : Effective Model and Pairing Mechanism(Iron-based Superconductors)

Kazuhiko Kuroki, Ryotaro Arita, Hideo Aoki

Article type: Article
2009 Volume 64 Issue 11 Pages 826-835
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_826

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A theoretical overview of the iron-based superconductors discovered in 2008 is given to reveal the features characteristic of the new material and how they differ from the cuprate high-T_c superconductors. We first explain that the effective model obtained from first-principles electronic structure for the iron-based material is intrinsically multi-band, and how this brings about interesting and sometimes complicated features. Then we focus on the spin-fluctuation mediated pairing, among other mechanisms proposed. We finally review how the theoretical results agree with the existing experimental results, and point out important problems for future prospects.

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Majorana Fermions in Quantized Vortices of p-Wave Superfluids(Current Topics)

Takeshi Mizushima, Masanori Ichioka, Kazushige Machida

Article type: Article
2009 Volume 64 Issue 11 Pages 836-840
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_836

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Quantized vortices, which are defined as defects in the phase of superfluid order parameters, involve the low-energy quasiparticle excitations. In particular, the order parameter in p-wave fermionic superfluids exhibits a non-trivial topological structure due to their internal degree of freedom. The noticeable result is the appearance of the zero energy quasiparticles, which behave as Majorana fermions. Here, we demonstrate the stability of the zero energy Majorana states near a p-wave Feshbach resonance in ultracold atomic gases.

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The "Glue-Effect" of Excess Neutrons and Appearance of Various Configurations of Alpha-Clusters(Current Topics)

Naoyuki Itagaki, Joachim A. Maruhn, Masaaki Kimura

Article type: Article
2009 Volume 64 Issue 11 Pages 840-844
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_840

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The structure change of nuclear systems as a function of excitation energy is discussed. In the nuclear systems, protons and neutrons are considered to perform independent particle motion in low-lying states close to the ground state, however α cluster structure appears around the α-threshold energy to decay into subsystems. Until now, such cluster states have been investigated in light stable nuclei with equal numbers of protons and neutrons, and gas-like nature of α cluster structure has been well studied. In the present study, we discuss in neutron-rich nuclei how the gas-like cluster structure changes when excess neutrons are added. We show the appearance of cluster states with geometric shapes due to the "glue effect" of the excess neutrons.

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QCD Phase Transitions : Chiral and Center Symmetries(Current Topics)

Kenji Fukushima

Article type: Article
2009 Volume 64 Issue 11 Pages 844-848
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_844

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The mass of hadrons such as the nucleon and the pion originates from the "strong interaction." What happens if the hadron matter is heated to a temperature comparable to the strong-interaction energy scale? We could know a theoretical answer with the solution of QCD that is the fundamental theory of the strong interaction. Also, we could have an experimental confirmation with the heated matter in the laboratory. The theoretical and experimental attempts have continued for almost 30 years, that is, the quest for the "quark-gluon plasma." I will make a theoretical review over the latest understanding of the QCD phase transitions with some historical consideration.

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Physics of Sports Motion : Models in Rigid Bodies with Rubber(Current Topics)

Nobuyuki Sakai

Article type: Article
2009 Volume 64 Issue 11 Pages 849-852
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_849

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JPSJ Selected Papers in the Latest Issue

Hajime Takayama

Article type: Article
2009 Volume 64 Issue 11 Pages 853-854
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_853

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 11 Pages 855-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_855_1

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 11 Pages 855-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_855_2

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[title in Japanese]

[in Japanese], [in Japanese]

2009 Volume 64 Issue 11 Pages 855-856
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_855_3

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To the Memory of Professor Toshiyuki Toyoda : A Life Dedicated to the Unified Approach to Sciences and to the Abolition of Nuclear Weapons

Masanori Ohya, Izumi Ojima

Article type: Article
2009 Volume 64 Issue 11 Pages 857-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_857

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In Memory of Professor Huzio Nakano

Hatsuo Kimura

Article type: Article
2009 Volume 64 Issue 11 Pages 858-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_858

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[title in Japanese]

[in Japanese]

Article type: Article
2009 Volume 64 Issue 11 Pages 859-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_859_1

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[title in Japanese]

[in Japanese]

Article type: Article
2009 Volume 64 Issue 11 Pages 859-860
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_859_2

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[title in Japanese]

[in Japanese]

Article type: Article
2009 Volume 64 Issue 11 Pages 860-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_860

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[title in Japanese]

2009 Volume 64 Issue 11 Pages 860-
Published: 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_860_2

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[title in Japanese]

[in Japanese]

Article type: Article
2009 Volume 64 Issue 11 Pages 861-862
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_861

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1. Survey on Academic Funding by Questionnaire for Members of Physical Society of Japan(Survey on Academic Educational and Research Environment)

[in Japanese]

Article type: Article
2009 Volume 64 Issue 11 Pages 863-866
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_863

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[title in Japanese]

[in Japanese]

Article type: Article
2009 Volume 64 Issue 11 Pages 867-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_867

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 868-873
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_868

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 873-874
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_873

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 11 Pages 875-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_875_1

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 876-887
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_876

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 889-891
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_889

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 892-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_892

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 893-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_893

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages App1-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_App1

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 895-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_895

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 896-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_896

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 897-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_897

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 898-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_898_1

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[title in Japanese]

[in Japanese]

2009 Volume 64 Issue 11 Pages 898-
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_898_2

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[title in Japanese]

Article type: Appendix
2009 Volume 64 Issue 11 Pages 899-900
Published: November 05, 2009
Released on J-STAGE: July 03, 2021

DOIhttps://doi.org/10.11316/butsuri.64.11_899

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