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Article type: Cover
2004 Volume 59 Issue 11 Pages
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Published: November 05, 2004
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Article type: Index
2004 Volume 59 Issue 11 Pages
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Published: November 05, 2004
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Article type: Index
2004 Volume 59 Issue 11 Pages
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Hiroyoshi Sakurai
Article type: Article
2004 Volume 59 Issue 11 Pages
749-
Published: November 05, 2004
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Ken-ichi Kubo
Article type: Article
2004 Volume 59 Issue 11 Pages
750-
Published: November 05, 2004
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Bun'ei Sato, Eiji Kambe, Hiroyasu Ando
2004 Volume 59 Issue 11 Pages
751-760
Published: November 05, 2004
Released on J-STAGE: April 14, 2008
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The first discovery in 1995 of a planet in the star other than the Sun is really a great discovery for the history of human beings. Since then, about 120 extrasolar planets have been counted and they have shown very rich varieties in their masses and orbits. Our group has conducted a planet search program since 2001, and succeeded in discovering the first Japanese extrasolar planet in the last year. The very accurate radial velocity measurement techniques with precision of several m/s have played a crucial role in detecting tiny wobbles of stars by the extrasolar planets. The recent further progresses of the techniques toward accuracy of less than 1 m/s will soon lead us to discover earth-like planets around stars. A chance to see the second earth is now surely in our hands.
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Keiji Saito, Seiji Miyashita
2004 Volume 59 Issue 11 Pages
760-767
Published: November 05, 2004
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Today there exist many experiments forcusing on the quantum dynamics in quantum magnets. As some new topics, we consider nonadiabatic magnetization processes in a sweeping magnetic field in molecular magnets and thermal conduction in low-dimensional quantum magnets. There new nontrivial phenomena appear due to thermal environments. We explain these phenomena by making use of the numerical method.
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Tadashi Takayanagi
2004 Volume 59 Issue 11 Pages
768-772
Published: November 05, 2004
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Recently, a novel interpretation on the duality between two dimensional string theory and the matrix model was obtained from the dynamics of unstable D-branes. This will give us a very intriguing viewpoint on non-perturbative aspects of string theory. Here, after we review these progresses, we would like to explain our construction of a matrix model dual of type 0 string in two dimension.
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Yuu Fujii, Toshinobu Miyoshi, Osamu Hashimoto
2004 Volume 59 Issue 11 Pages
772-775
Published: November 05, 2004
Released on J-STAGE: April 14, 2008
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Hypernuclear production by electron beams has great advantage over those by mesonic beams for the spectroscopic study of lambda hypernuclei. The pioneering experiment at Jefferson Lab with high-energy continuous electron beams, which succeeded in lambda hypernuclear spectroscopy for the first time, and its future prospects are presented.
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Kenji Koga
2004 Volume 59 Issue 11 Pages
776-780
Published: November 05, 2004
Released on J-STAGE: April 14, 2008
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About forty years ago it was discovered that the nanometer-sized gold forms two types of fivefold symmetrical morphologies, icosahedron (Ih) and decahedron (Dh). However, until now, no clear-cut experimental result has been provided about the fundamental question: "At what size do these non-crystalline structures change to the ordinal crystal?" We clarified this issue by performing statistical structural analyses for gold nanoparticles annealed in a helium heat bath. During this work, we discovered a novel solid-solid transition, Ih-to-Dh transformation, taken place at high temperatures.
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Yukio Saito, Hiroyuki Hyuga
2004 Volume 59 Issue 11 Pages
781-785
Published: November 05, 2004
Released on J-STAGE: April 14, 2008
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Organic molecules can have enantiomeric isomers whose chemical compositions are the same but their stereostructures are mirror symmetric with each other as are the right and the left hands. In general chemical productions, these isomers are produced with equal probability. However, in the living matters only one type of isomers exists. This complete chiral symmetry breaking has been recognized to be a great mystery related to the origin of life. Recently, a chemical reaction whose enantiomeric excess is amplified in asymmetric autocatalysis has been found experimentally for the first time. Inspired by this discovery and further adding a kind of back reaction, we propose a simple model to understand the chiral symmetry breaking, and studied it analytically and by numerical simulations. We found that the nonlinear autocatalysis of chiral molecules and their decomposition processes are crucial to achieve the symmetry breaking.
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Toyonari Sugimoto, Hideki Fujiwara, Satoru Noguchi
2004 Volume 59 Issue 11 Pages
786-790
Published: November 05, 2004
Released on J-STAGE: April 14, 2008
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"Spin electronics" is now drawing much attention as a new type of electronics, which makes use of both charge and spin of electrons. The diluted ferromagnetic semiconductors have successfully been prepared by the injection of magnetic metals into conventional II/VI, IV/Vl and III/V semiconductors, and their application into the spin electronics devices is now being investigated. Another approach of developing ferromagnetic semiconductors and metals is also carried out by using charge-transfer salts of organic donor molecules and magnetic counteranions. In this article we present representative organic magnetic conductors so far obtained and in particular an organic ferromagnetic semiconductor discovered very recently by us.
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 11 Pages
791-
Published: November 05, 2004
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Toru Moriya
2004 Volume 59 Issue 11 Pages
791-796
Published: November 05, 2004
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Masao Ogata
2004 Volume 59 Issue 11 Pages
796-801
Published: November 05, 2004
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Masataka Ariyama
Article type: Article
2004 Volume 59 Issue 11 Pages
802-806
Published: November 05, 2004
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Yasuhito Kiwamoto
Article type: Article
2004 Volume 59 Issue 11 Pages
806-808
Published: November 05, 2004
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 11 Pages
809-
Published: November 05, 2004
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 11 Pages
809-810
Published: November 05, 2004
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 11 Pages
810-
Published: November 05, 2004
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 11 Pages
810-811
Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
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Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
812-
Published: November 05, 2004
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 11 Pages
812-813
Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
813-822
Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
822-823
Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
824-
Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
824-
Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
825-846
Published: November 05, 2004
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Article type: Appendix
2004 Volume 59 Issue 11 Pages
847-854
Published: November 05, 2004
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