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【资源】分享：Frontiers of Physics，2009年第4期
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 Cover illustration Vol. 4, No. 4, 2009 Fermi surface of iron-based superconductor, Ba0.6K0.4Fe2As2 (Tc=35 K), measured by high resolution angle-resolved photoemission spectroscopy (ARPES). Near the center Γ(0,0) point, two hole-like Fermi surface sheets are observed while near the corner M(beta;beta) point, two strong Fermi spots are observed. The two Fermi surface sheets near the Γ point show different superconducting gap: the inner one shows larger gap (10 ― 12 meV) while the outer one has a smaller gap (7 ― 8 meV). No gap node is observed on both Fermi surface sheets which is consistent with s-wave superconducting gap symmetry. Superconducting gap opening is also observed at the M(π,π) point with a gap size of 10 meV. The two Fermi surface spots near the M point are gapped below Tc but the gap persists above Tc. The rich and detailed superconducting gap information will provide key insights in understanding pairing mechanism in the iron-based superconductors. Please refer to the article “Band structure, Fermi surface and superconducting gap in FeAs-based superconductors revealed by angle-resolved photoemission spectroscopy” by Professor Xing-jiang ZHOU (周兴江) et al., pp 427―432, in this issue. [Photo credits: Prof. Xing-jiang ZHOU (周兴江) (Institute of Physics, Chinese Academy of Sciences, China)] Special Section: Iron-based Superconductors 427 Band structure, Fermi surface and superconducting gap in FeAs-based superconductors revealed by angle-resolved photoemission spectroscopy Xing-jiang ZHOU (周兴江) , Guo-dong LIU (刘国东), Hai-yun LIU (刘海云), Lin ZHAO (赵林), Wen-tao ZHANG (张文涛), Xiao-wen JIA (贾小文), Jian-qiao MENG (孟建桥) 433 A unified description of cuprate and iron arsenide superconductors Mike GUIDRY, Yang SUN (孙扬), Cheng-li WU (吴成礼) 447 Theory for superconductivity in iron pnictides at large Coulomb U limit Wei-qiang CHEN (陈伟强), Kai-yu YANG (杨开宇), Yi ZHOU (周毅), Fu-chun ZHANG (张富春) 455 Magneto-thermopower of parent compound LaFeAsO Zeng-wei ZHU (朱曾伟), Qian TAO (陶前), Yu-ke LI (李玉科), Mi HE (何咪), Guang-han CAO (曹光旱), Zhu-an XU (许祝安) 459 Optical properties of FeAs-based parent compound: A comparative study for polycrystalline EuFe2As2 and LaFeAsO Wan-zheng HU (胡婉铮), Jing DONG (董靖), Gang LI (李岗), Zheng LI (李政), Ping ZHENG (郑萍), Gen-fu CHEN (陈根富), Jian-lin LUO (雒建林), Nan-lin WANG (王楠林) 464 Studies on the superconductivity for the “111” type iron arsenide superconductor Xian-cheng WANG (望贤成), Qing-qing LIU (刘清青), Liu-xiang YANG (杨留响), Zheng DENG (邓正), Yu-xi LÜ (吕玉玺), Wei-bo GAO (高伟波), Si-jia ZHANG (张思佳), Ri-cheng YU (禹日成), Chang-qing JIN (靳常青) Atomic, Molecular, and Optical Physics 469 Advances in surface plasmon resonance-based high throughput biochips San-jun ZHANG (张三军), Lotfi BERGUIGA, Juan ELEZGARAY, Nicolas HUGO, Wen-xue LI (李文雪), Thibault ROLAND, He-ping ZENG (曾和平), Francoise ARGOUL 481 Coherent population transfer in four-level ladder systems by single frequency-chirped laser pulse Xiao-hong LI (李小红), Xian-zhou ZHANG (张现周), Rui-zhou ZHANG (张瑞州) Condensed Matter and Materials Physics 487 One-dimensional self-assembly of inorganic nanoparticles Tao HU (胡涛), Yan GAO (高燕), Zhen-long WANG (王振龙) , Zhi-yong TANG (唐智勇) 497 Discrete breathers in a two-dimensional Morse lattice with an on-site harmonic potential Bin-bin Lv; (吕彬彬), Qiang TIAN (田强) 505 Preparation of carbon fiber/ZnO core-shell structure by a simple method Kai DU (杜凯) , Rong-hui WEI (魏荣慧), Qing-dong CHEN (陈庆东), Jing-han YOU (尤景汉), Hai-bin YANG (杨海滨) Nuclear Physics 509 A general derivation of differential cross section in quark－quark and quark－gluon scatterings at fixed impact parameter Shou-wan CHEN (陈守万), Jian DENG (邓建), Jian-hua GAO (高建华), Qun WANG (王群) Particles, Fields, Gravitation, Cosmology, and Astrophysics 517 Selfdual spin 2 theory in a 2+1 dimensional (A)dS space－time Pio J. ARIAS, Rolando GAITAN D. 525 On torsion-free vacuum solutions of the model of de Sitter gauge theory of gravity (II) Chao-guang HUANG (黄超光), Meng-sen MA (马孟森) 530 Fluctuation around horizon on a Schwarzschild black hole using the null geodesic method Ji-li HUANG (黄基利), Wen-biao LIU (刘文彪) 534 Diffractive upsilon photo-production off the proton in the QCD inspired model Ji-huan PAN (潘季环), Li-juan ZHOU (周丽娟), Wei-xing MA (马维兴) Statistical Physics, Nonlinear Physics, and Interdisciplinary Physics 549 The unified chaotic system describing the Lorenz and Chua systems Zeraoulia ELHADJ, J. C. SPROTT 556 Modeling mobile ad hoc communication networks on two-dimensional square lattice Li WANG (王黎), Chen-ping ZHU (朱陈平), Zhi-ming GU (古志鸣), Xi-tao LI (李曦涛) i Contents for Volume 4 v Subject Index to Volume 4 xiii Author Index to Volume 4 iixx Summary of the Physics and Astronomy Classification Scheme; (PACS) －2008 xx Guidelines for Authors xxiii What We Focus on: Greetings: Hong-jun GAO, EAST team, and Jie MENG won the Achievements in Asia Award of the Overseas Chinese Physics Association 铁基专题宣传，全文请下载： http://www.sciencenet.cn/bbs/showpost.aspx?id=63323 [ Last edited by donghg on 2009-12-11 at 15:50 ] |
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