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As a typical hole-doped cuprate superconductor, Bi 2 Sr 2 CaCu 2 O 8+{\delta} (Bi2212) carrier doping is mostly determined by its oxygen content. Traditional doping methods can regulate its doping level within the range of hole doping. Here…

Recent experiments have tuned the monolayer 1T'-WTe2 to be superconducting by electrostatic gating. Here, we theoretically study the phonon-mediated superconductivity in monolayer 1T'-WTe2 via charge doping. We reveal that the emergence of…

超导电性 · 物理学 2020-12-30 Wei Yang , Chong-jie Mo , Shi-Bin Fu , Yu Yang , Fa-Wei Zheng , Xiao-Hui Wang , Yuan-An Liu , Ning Hao , Ping Zhang

In-plane resistivity measurements as a function of temperature and magnetic field up to 35~T with precise orientation within the crystallographic $ac-$plane were used to study the upper critical field, $H_{c2}$, of the hole-doped iron-based…

超导电性 · 物理学 2017-11-29 M. A. Tanatar , Yong Liu , J. Jaroszynski , J. S. Brooks , T. A. Lograsso , R. Prozorov

Transition metal dichalcogenides (TMDs) display a rich variety of instabilities such as spin and charge orders, Ising superconductivity and topological properties. Their physical properties can be controlled by doping in electric…

By using solid state reaction method, we have synthesized the Pd-doped superconductor SrFe2-xPdxAs2. The systematic evolution of the lattice constants indicated that the Fe ions were successfully replaced by the Pd. By increasing the doping…

超导电性 · 物理学 2016-06-28 Xiyu Zhu , Fei Han Peng Cheng , Bing Shen , Hai-Hu Wen

We report an investigation of the structural, magnetic and electronic properties of Ba(Fe(1-x)V(x))2As2 using x-ray, transport, magnetic susceptibility and neutron scattering measurements. The vanadium substitutions in Fe sites are possible…

The hunt for high temperature superfluidity has received new impetus from the discovery of atomically thin stable materials. Electron-hole superfluidity in coupled MoSe2-WSe2 monolayers is investigated using a mean-field multiband model…

Emergency of superconductivity at the instabilities of antiferromagnetism (AFM), spin/charge density waves has been widely recognized in unconventional superconductors. In copper-oxide superconductors, spin fluctuations play a predominant…

Magnetic measurements on optimally doped single crystals of BaFe$_2$(As$_{1-x}$P$_{x}$)$_2$ ($x\approx0.35$) with magnetic fields applied along different crystallographic axes were performed under pressure, enabling the pressure evolution…

We predict by first-principles calculations that the electron-doped phosphorene is a potential BCS-like superconductor. The stretching modes at the Brillouin-zone center are remarkably softened by the electron-doping, which results in the…

超导电性 · 物理学 2014-12-23 D. F. Shao , W. J. Lu , H. Y. Lv , Y. P. Sun

By using solid state reaction method we have fabricated the hole doped $La_{1-x}Sr_xFeAsO$ superconductors with Sr content up to 0.13. It is found that the sharp anomaly at about 150 K and the low temperature upturn of resistivity are…

超导电性 · 物理学 2015-05-13 Gang Mu , Lei Fang , Huan Yang , Xiyu Zhu , Peng Cheng , Hai-Hu Wen

By substituting Fe with the 5d-transition metal Pt in BaFe2As2, we have successfully synthesized the superconductors BaFe2-xPtxAs2. The systematic evolution of the lattice constants indicates that the Fe ions were successfully replaced by…

超导电性 · 物理学 2015-05-18 Xiyu Zhu , Fei Han , Gang Mu , Jun Tang , Jing Ju , Katsumi Tanigaki , Hai-Hu Wen

Single crystalline CaFe2As2 and (Ca1-xNax)Fe2As2 polycrystals (0 < x < 0.66) are synthesized and characterized using structural, magnetic, electronic transport, and heat capacity measurements. These measurements show that the…

超导电性 · 物理学 2011-12-02 K. Zhao , Q. Q. Liu , X. C. Wang , Z. Deng , Y. X. Lv , J. L. Zhu , F. Y. Li , C. Q. Jin

In the cuprate superconductor $YBa_2Cu_3O_{6+x}$, hole doping in the $CuO_2$ layers is controlled by both oxygen content and the degree of oxygen-ordering. At the composition $\rm YBa_2Cu_3O_{6.35}$, the ordering can occur at room…

超导电性 · 物理学 2009-11-10 A. Hosseini , D. M. Broun , D. E. Sheehy , T. P. Davis , M. Franz , Ruixing Liang , W. N. Hardy , D. A. Bonn

We systematically investigated the effects of charge doping and strain on monolayer Fe$_3$GaTe$_2$, and proposed three new novel two-dimensional magnetic materials: monolayer Fe$_3$GaX$_2$ (X=I, Br, Sb). We found that both strain and charge…

材料科学 · 物理学 2025-09-10 Qiuhao Wang , Xinlong Yang , Fawei Zheng , Ping Zhang

We report Cu- and F-NMR studies on a four-layered high-temperature superconductor Ba2Ca3Cu4O8F2(0234F(2.0)) with apical fluorine (F-1), an undoped 55 K-superconductor with a nominal Cu2+ valence on average. We reveal that this compound…

超导电性 · 物理学 2009-11-13 S. Shimizu , H. Mukuda , Y. Kitaoka , A. Iyo , Y. Tanaka , Y. Kodama , K. Tokiwa , T. Watanabe

The superconducting properties of a recently proposed phenomenological model for a weakly doped antiferromagnet are analyzed, taking into account fluctuations of the phase of the order parameter. In this model, we assume that the doped…

超导电性 · 物理学 2009-11-11 V. M. Loktev , V. M. Turkowski

Two-dimensional (2D) high-temperature ferromagnetic materials are important for spintronic application. Fortunately, a highly-air-stable PdSe$_2$ monolayer semiconductor has been made through exfoliation from the layered bulk material. It…

介观与纳米尺度物理 · 物理学 2019-06-05 Shi-Hao Zhang , Bang-Gui Liu

The superconductivity in high temperature superconductors ordinarily arises when doped with hetero-valent ions that introduce charge carriers. However, in ferropnictides, "iso-valent" doping, which is generally believed not to introduce…

超导电性 · 物理学 2015-03-19 Z. R. Ye , Y. Zhang , M. Xu , Q. Q. Ge , F. Chen , Juan Jiang , B. P. Xie , J. P. Hu , D. L. Feng

We investigate the possibility of achieving high-temperature superconductivity in hydrides under pressure by inducing metallization of otherwise insulating phases through doping, a path previously used to render standard semiconductors…