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| 1 | Relationship between the parent charge transfer gap and maximum transition temperature in cuprates显示文摘One of the biggest puzzles concerning the cuprate high temperature superconductors is what determines the maximum transition temperature(Tc,max), which varies from less than 30 to above 130 K in different compounds.Despite this dramatic variation, a robust trend is that within each family, the double-layer compound always has higher Tc,maxthan the single-layer counterpart. Here we use scanning tunneling microscopy to investigate the electronic structure of four cuprate parent compounds belonging to two different families. We find that within each family, the double layer compound has a much smaller charge transfer gap size(DCT), indicating a clear anticorrelation between DCTand Tc,max. These results suggest that the charge transfer gap plays a key role in the superconducting physics of cuprates, which shed important new light on the high Tc mechanism from doped Mott insulator perspective. | Wei Ruan Cheng Hu Jianfa Zhao Peng Cai Yingying Peng Cun Ye Runze Yu Xintong Li Zhenqi Hao Changqing Jin Xingjiang Zhou Zheng-Yu Weng Yayu Wang | 2016 | Science Bulletin2016,61,23: | 3 |
| 2 | Efficacy analysis of Cheng's GIRAFFE reconstruction after proximal gastrectomy for adenocarcinoma of esophagogastric junction显示文摘Objective:Reconstruction of the digestive tract for adenocarcinoma of esophagogastric junction(AEG)is in dispute.This study evaluated Cheng’s gastric tube interposition esophagogastrostomy with reconstruction of His angle and fundus(Cheng’s GIRAFFE anastomosis)in laparoscopic/open proximal gastrectomy for Siewert typeⅡAEG,which was performed at Zhejiang Cancer Hospital and the First Affiliated Hospital of Zhejiang Chinese Medical University.Here,we discuss the preliminary results of gastric emptying and anti-reflux.Methods:From a retrospective database,74 patients with advanced Siewert typeⅡAEG underwent curative proximal gastrectomy with GIRAFFE anastomosis,and their gastric emptying and anti-reflux outcomes were evaluated by the Reflux Disease Questionnaire(RDQ)score,nuclide gastric emptying,24-h impedance-pH monitoring and gastroscopy.Results:Seventy-four patients successfully completed proximal partial gastrectomy with Cheng’s GIRAFFE esophagogastric anastomosis.RDQ score six months after the operation was 2.2±2.5.Results of nuclide gastric emptying examinations showed that the gastric half-emptying time was 67.0±21.5 min,the 1-h residual rate was(52.2±7.7)%,the 2-h residual rate was(36.4±5.1)%,and the 3-h residual rate was(28.8±3.6)%;24-h impedance-p H monitoring revealed that the mean De Meester score was 5.8±2.9.Reflux esophagitis was observed by gastroscopy in 7 patients six months after surgery.Conclusions:Cheng’s GIRAFFE anastomosis is safe and feasible for Siewert typeⅡAEG. | Zhiyuan Xu Can Hu Yanqiang Zhang Ling Huang Litao Yang Jianfa Yu Pengfei Yu Jiahui Chen Yian Du Xiangdong Cheng | 2022 | Chinese Journal of Cancer Research2022,34,3: | 3 |
| 3 | 在自从 1980s: ,伪造在人口之间的连接学习的中国的人口地理和人的地理显示文摘自从 1980 年代,这篇论文在中国考察人口地理的进步。评论结果建议与它这个领域里的看不见和排斥地位的普通感觉相反,自从 1980 年代,巨大的进步在中国在人口地理被取得了。人口地理学者用地理观点做了重要贡献到大量人口问题的理解,包括移植,都市化,人口分发,在人口之间的关系,环境和资源,变老,婚姻模式,和候鸟罪,尽管如此的贡献经常没出现在地理圆。而且,人口地理学者在使新生起了一个不可缺少的作用在中国的人口研究并且伪造它的连接到人的地理,在这个多学科的领域里占据一个重要位置。对移植和都市化研究的区域的人口地理学者贡献是特别地重要的,在这些区域研究在他们的主角思考了。论文证明作为在超过 20 年隔离以后的领域里的迟到者,在中国的人口地理学者通过了自从 1980 年代,在与社会科学家一起的社会科学和增加的相互作用追上来和与开发的增加的约会的一个过程,并且极大地得益于它;然而,为逐渐地从主要溪流人地理要离间的人口地理有一个趋势,类似于然而并非象在 1990 年代末和 2000 年代初的祖籍英国的美国人地理一模一样的现象。论文主张人口地理仅仅是在菜的半路伪造在人口研究和人的地理之间的连接,并且它需要回到地理科学寻求在人口研究和人的地理的领域之间的健康平衡,并且在一个多学科的领域里支持它的进一步的开发。 | ZHU Yu DING Jinhong WANG Guixin SHEN Jianfa LIN Liyue KE Wenqian | 2016 | Journal of Geographical Sciences2016,26,8: | 2 |
| 4 | Identification and functional annotation of lncRNA genes with hypermethylation in colorectal cancer显示文摘 | Qi Liao Weiling He Jianfa Liu Yi Cen Liang Luo Chengliang Yu Yang Li Sitong Chen Shiwei Duan | 2015 | Gene2015,,: | 1 |
| 5 | Biodegradation of 2,4,6-trinitrophenol (picric acid) in a biological aerated filter (BAF)显示文摘 | Shen Jinyou He Rui Yu Hongxia Wang Lianjun Zhang Jianfa Sun Xiuyun Li Jiansheng Han Weiqing Xu Lu | 2009 | Bioresource Technology2009,,100: | 1 |
| 6 | Colossal negative magnetoresistance in spin glass Na(Zn,Mn)Sb显示文摘We report the study of magnetic and transport properties of polycrystalline and single crystal Na(Zn,Mn)Sb,a new member of“111”type of diluted magnetic materials.The material crystallizes into Cu2Sb-type structure which is isostructural to“111”type Fe-based superconductors.With suitable carrier and spin doping,the Na(Zn,Mn)Sb establishes spin-glass ordering with freezing temperature(Tf)below 15 K.Despite lack of long-range ferromagnetic ordering,Na(Zn,Mn)Sb single crystal still shows sizeable anomalous Hall effect below Tf.Carrier concentration determined by Hall effect measurements is over 1019 cm-3.More significantly,we observe colossal negative magnetoresistance(MR≡[ρ(H)−ρ(0)]/ρ(0))of-94%in the single crystal sample. | Shuang Yu Yi Peng Guoqiang Zhao Jianfa Zhao Xiancheng Wang Jun Zhang Zheng Deng Changqing Jin | 2023 | Journal of Semiconductors2023,44,3: | 0 |
| 7 | Superconductivity above 70 K observed in lutetium polyhydrides显示文摘The binary polyhydrides of heavy rare earth lutetium that shares a similar valence electron configuration to lanthanum have been experimentally discovered to be superconductive.The lutetium polyhydrides were successfully synthesized at high pressure and high temperature conditions using a diamond anvil cell in combinations with the in-situ high pressure laser heating technique.The resistance measurements as a function of temperature were performed at the same pressure of synthesis in order to study the transitions of superconductivity(SC).The superconducting transition with a maximum onset temperature(Tc)71 K was observed at pressure of 218 GPa in the experiments.The Tcdecreased to 65 K when pressure was at 181 GPa.From the evolution of SC at applied magnetic fields,the upper critical field at zero temperatureμ0Hc2(0)was obtained to be~36 T.The in-situ high pressure X-ray diffraction experiments imply that the high TcSC should arise from the Lu4H23phase with Pm3n symmetry that forms a new type of hydrogen cage framework different from those reported for previous light rare earth polyhydride superconductors. | Zhiwen Li Xin He Changling Zhang Ke Lu Baosen Min Jun Zhang Sijia Zhang Jianfa Zhao Luchuan Shi Yi Peng Shaomin Feng Zheng Deng Jing Song Qingqing Liu Xiancheng Wang Richeng Yu Luhong Wang Yingzhe Li Jay D.Bass Vitali Prakapenka Stella Chariton Haozhe Liu Changqing Jin | 2023 | Science China(Physics,Mechanics & Astronomy)2023,66,6: | 0 |
| 8 | Superconductivity of a cuprate with compressed local octahedron显示文摘Since the historical discovery of high Tc superconductivity(HTS)of La2CuO4 in 1986[1],the superconductivity me chanism of copper oxides remains one of the biggest mysteries in the field of condensed matter physics[2-10].High-Tc cuprates crystallize into layered perovskite structure,as well as copper oxygen octahedron coordination.In octahedron symmetry,the 3d orbitals of Cu^2+with a 3d^9 configuration degenerate into two top eg and three lower t2g orbitals. | WenMin Li LiPeng Cao JianFa Zhao XianCheng Wang RunZe Yu YouWen Long QingQing Liu ChangQing Jin | 2019 | Science China(Physics,Mechanics & Astronomy)2019,62,3: | 0 |
| 9 | Orbital selection of the double [CuO2] layer compound Ca3Cu2O4Cl2显示文摘The discovery of high-temperature copper oxide superconductors(HTS)by Bednorz and Muller[1]in 1986 opened up a new field of superconductivity.Since then,several different families of materials have been discovered with greatly increased superconducting critical temperature(Tc)[2].Oxychloride cuprates,Can+1CunO2wCl2,are one such type of parent compound of high Tc cuprate superconductors.There are two members in this family known so far that can exist at ambient pressure:Ca2CuO2Cl2(single[Cu02]layer CCOC)and Ca3Cu2O4Cl2(double[CuO2]layer CCOC).Both are composed of a[CuO2]plane with the apical oxygen replaced by chlorine atoms. | JianFa Zhao LiPeng Cao WenMin Li Jun Zhang GuangYang Dai Shuang Yu QingQing Liu XianCheng Wang GuoQiang Zhao YaTing Jia Lei Duan YouWen Long Hong-Ji Lin Chien-Te Chen Liu-Hao Tjeng ZhiWei Hu RunZe Yu ChangQing Jin | 2019 | Science China(Physics,Mechanics & Astronomy)2019,62,10: | 0 |