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| 1 | Effect of nanometer-sized MgO particles on flux pinning in YBa_2Cu_30_(7-δ)显示文摘As is well known, the relatively low critical current density J_c and the serious flux motion limit a variety of applications of high-temperature superconductors (HTSCs). The introduction | CHEN Qinghu FANG Minghu YE Xisheng JIAO Zhengkuan ZHANG Qirui WEN Haihu ZHAO Zhongxian | 1997 | Chinese Science Bulletin1997，42，4： | 3 |
| 2 | High catalytic activity of nanostructured Pd thin films electrochemically deposited on polycrystalline Pt and Au substrates towards electro-oxidation of methanol显示文摘 | Jintao Zhang Minghu Huang Houyi Ma Fang Tian Wei Pan Shenhao Chen | 2007 | Electrochemistry Communications2007，，6： | 1 |
| 3 | Characterization of individual SnO nanobelts with STM显示文摘 | Khabibulakh Katsiev Andrei Kolmakov Minghu Fang | 2008 | Surface Science2008，，602： | 1 |
| 4 | Flux Pinning in Y_(1-x)M_(x)Ba_(2)Cu_(3)O_(7-δ)(M=Gd,Eu and Sm)System显示文摘In this paper,the flux pinning effects in Y_(1-x)M_(x)Ba_(2)Cu_(3)O_(7-δ)(M=Gd,Eu and Sm)samples are reported.It is found that there is another pinning mechanism under higher magnetic fields in addition to that under lower fields.This pinning effect may stem from the lattice stress field resulting from the partial substitution of the rare earth elements with different atomic radii for Y. | LI Jonghen FANG Minghu HU Gangjin ZHANG Xiaojun JIAO Zhengkuan ZHANG Qirui ZHANG Yitong JIN Xin YAO Xixian | 1992 | Chinese Physics Letters1992，9，12： | 0 |
| 5 | Metamagnetic transitions and anomalous magnetoresistance in EuAg4As2 crystals显示文摘In this work,we systematically studied the magnetic and transport properties of EuAg4As2 single crystals.It was found that the two antiferromagnetic transitions(TN1=10 K and TN2=15 K)were driven to lower temperatures by an applied magnetic field.Below TN1,two successive metamagnetic transitions were observed when a magnetic field was applied in the ab plane(H//abplane).For both H//ab and H//c,EuAg4As2 showed a positive,unexpectedly large magnetoresistance(up to 202%)in lower magnetic fields below TN1,and a large negative magnetoresistance(up to-78%)at high fields/intermediate temperatures,thus presenting potential applications in magnetic sensors.Finally,the magnetic phase diagrams of EuAg4As2 were constructed for both H//ab and H//c using the resistivity and magnetisation data. | QinQing Zhu Liang Li ZhiHua Yang ZheFeng Lou JianHua Du JinHu Yang Bin Chen HangDong Wang MingHu Fang | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，2： | 0 |
| 6 | Correlation between Carrier Concentration and Superconductivity in the 123-phase System显示文摘Besides the structure and oxygen content,the resistance-temperature relationship,Hall carrier concentration(nH)and midpoint temperature of superconducting transition(T_(c))were measured for more than six 123-phase systems with elemental substitution.No correlation is found between the oxygen content and T_(c),nor is between the orthorhombic structure and T_(c).Instead,an unmonotonic relationship is jound between nH and T_(c).The optimum nH for the highest T_(c) is about 3.8 x1021cm-3.All this draws a conclusion that nH is a parameter to describe the high T_(c) superconductivity. | HE Zhenhui XIA Jiansheng WANG Shunxi CAO Liezhao CHEN Zuyao ZHANG Han FANG Minghu XU Zhu’an ZHANG Qirui | 1991 | Chinese Physics Letters1991，8，5： | 0 |
| 7 | Large unsaturated positive and negative magnetoresistance in Weyl semimetal TaP显示文摘After successfully growing single-crystal Ta P, we measured its longitudinal resistivity(ρxx) and Hall resistivity(ρyx) at magnetic fields up to 9 T in the temperature range of 2-300 K. At 8 T, the magnetoresistance(MR) reached 3.28 × 105% at 2 K, 176%at 300 K. Neither value appeared saturated. We confirmed that Ta P is a hole-electron compensated semimetal with a low carrier concentration and high hole mobility of μh=3.71 × 10~5cm^2/V s, and found that a magnetic-field-induced metal-insulator transition occurs at room temperature. Remarkably, because a magnetic field(H) was applied in parallel to the electric field(E), a negative MR due to a chiral anomaly was observed and reached-3000% at 9 T without any sign of saturation, either, which is in contrast to other Weyl semimetals(WSMs). The analysis of the Shubnikov-de Haas(Sd H) oscillations superimposed on the MR revealed that a nontrivial Berry's phase with a strong offset of 0.3958, which is the characteristic feature of charge carriers enclosing a Weyl node. These results indicate that Ta P is a promising candidate not only for revealing fundamental physics of the WSM state but also for some novel applications. | JianHua Du HangDong Wang Qin Chen OianHui Mao Rajwali Khan BinJie XU YuXing Zhou YanNan Zhang JinHu Yang Bin Chen ChunMu Feng MingHu Fang | 2016 | Science China(Physics,Mechanics & Astronomy)2016，59，5： | 0 |
| 8 | Bulk superconductivity in the Dirac semimetal TlSb显示文摘A feasible strategy for realizing the Majorana fermions is searching for a simple compound with both bulk superconductivity and Dirac surface states.In this paper,we perform calculations of electronic band structure,the Fermi surface,and the surface states,and measure the resistivity,magnetization,and specific heat of a TlSb compound with a CsCl-type structure.The band structure calculations show that TlSb is a Dirac semimetal when spin-orbit coupling is considered.TlSb is first determined to be a type-Ⅱsuperconductor with T_(c)=4.38 K,Hc1(0)=148 Oe,H_(c2)(0)=1.12 T,andκ_(GL)=10.6.We also confirm that TlSb is a moderately coupled s-wave superconductor.Although we cannot determine the band near the Fermi level EF that is responsible for superconductivity,its coexistence with topological surface states implies that the TlSb compound may be a simple material platform to realize the fault-tolerant quantum computations. | YuXing Zhou Bin Li ZheFeng Lou HuanCheng Chen Qin Chen BinJie Xu ChunXiang Wu JianHua Du JinHu Yang HangDong Wang MingHu Fang | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，4： | 0 |
| 9 | Hole Concentration Dependence of T_(c) in Bi_(2)Sr_(2)CaCu_(2)O_(y) System显示文摘The resistance,ac susceptibility and Hall coefficient measurements were carried out for the high quality single phase Bi_(2)Sr_(2)CaCu_(2)O_(y) samples with different oxygen contents.It is found that the number of extra oxygen atoms in the samples can be easily modulated when they are annealed in low vacuum,and that the relationship between T_(c) and P^(+) is unmonotonic with an optimum P^(+)=0.27holes/CuO_(2) plane corresponding to the highest T_(c)(=95K).This unmonotonic relationship is discussed briefly. | FANG Minghu XU Zhuan WEI Hongbin ZENG Xingbin HU Gangjin ZHANG Xuanjia ZHANG Qirui WU Yuming WANG Qidong SHA Jian CAO Liezhao | 1992 | Chinese Physics Letters1992，9，3： | 0 |
| 10 | Studies of the Anomaly of Hall Coefficient in High T_(c) Superconducting Thin Films显示文摘Measurements of the Hall coefficient(RH)were carried out for a polycrystalline YBa_(2)Cu_(3)O_(7-y) film,a well oriented YBa_(2)Cu_(3)O_(7-y) film and an oriented GdBa_(2)Cu_(3)O_(7-y) film.Sign change of RH was observed for the two YBa_(2)Cu_(3)O_(7-y) films near Tc,but not for the GdBa_(2)Cu_(3)O_(7-y) film which contains partly the component of(110)orientation.The RH anisotropy model proposed previously turns out to be incorrect.Why the YBa_(2)Cu_(3)O_(7-y) films experience sign change of RH while the GdBa_(2)Cu_(3)O_(7-y) film does not is tentatively investigated. | HE Zhenhui SHA Jian SU Zhenpeng CHENG Xiang ai WANG Shunxi FANG Minghu ZHANG Qirui ZHOU Xianyi YAO Weiguo QI Zhenzhong YI Huairen LI Hongcheng | 1991 | Chinese Physics Letters1991，8，6： | 0 |
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