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Various tin hydrides SnHx (x = 4, 8, 12, 14) have been theoretically predicted to be stable at high pressures and to show high-critical-temperature superconductivity with Tc ranging from about 70 to 100 K. However, experimental…

Superconducting transition temperature Tc of NazCo1-xMxO2.yH2O has been studied for M=Ir and Ga, which can substitute for Co. It has been found that Tc is suppressed by the M-atom doping. The decreasing rates |dTc/dx| are of the order of 1…

超导电性 · 物理学 2009-11-10 M. Yokoi , H. Watanabe , Y. Mori , T. Moyoshi , Y. Kobayashi , M. Sato

The superconducting transition temperature $T_{c}$ of multilayers of electron-doped cuprates, composed of underdoped (or undoped) and overdoped La% $_{2-x}$Ce$_{x}$CuO$_{4}$ (LCCO) and Pr$_{2-x}$Ce$_{x}$CuO$_{4}$ (PCCO) thin films, is found…

超导电性 · 物理学 2015-05-27 K. Jin , P. Bach , X. H. Zhang , U. Grupel , E. Zohar , I. Diamant , Y. Dagan , S. Smadici , P. Abbamonte , R. L. Greene

The lattice parameters of the tetragonal compounds Ce$M$In$_{5}$ and Ce$_{2}M$In$_{8}$($M=$Rh, Ir and Co) have been studied as a function of pressure up to 15 GPa using a diamond anvil cell under both hydrostatic and quasihydrostatic…

强关联电子 · 物理学 2009-11-10 Ravhi S. Kumar , A. L. Cornelius , J. L. Sarrao

High transition temperature (high-Tc) superconductivity is associated with layered crystal structures. This work considers superconductivity in ultra-thin crystals (of thickness equal to the transverse structural periodicity distance d for…

超导电性 · 物理学 2012-02-03 Dale R. Harshman , Anthony T. Fiory

The effect of pressure on the crystalline structure and superconducting transition temperature (Tc) of the 111-type Na1-xFeAs system using in situ high pressure synchrotron x-ray powder diffraction and diamond anvil cell techniques is…

We have investigated the pressure effect on the newly discovered samarium doped La1-xSmxO0.5F0.5BiS2 superconductors. More than threefold increase in Tc (10.3 K) is observed with external pressure (at ~1.74 GPa at a rate of 4.08 K/GPa)) for…

Superconductivity of Ca1-xLaxFe2As2 single crystals with various doping level were investigated via electromagnetic measurements for out-plane (H//c) and in-plane (H//ab) directions. Obvious double superconducting transitions, which can…

超导电性 · 物理学 2013-08-28 W. Zhou , F. F. Yuan , J. C. Zhuang , Y. Sun , Y. Ding , L. J. Cui , J. Bai , Z. X. Shi

Two single crystalline samples with the same nominal composition of Rb0.8Fe2Se2 prepared via slightly different precursor routes under the same thermal processing conditions were investigated at ambient and high pressures. One sample was…

超导电性 · 物理学 2012-07-18 M. Gooch , B. Lv , L. Z. Deng , T. Muramatsu , J. Meen , Y. Y. Xue , B. Lorenz , C. W. Chu

We studied the evolution of superconductivity (sc) and antiferromagnetism (afm) in the heavy fermion compound CePt_3Si with hydrostatic pressure. We present a pressure-temperature phase diagram established by electrical transport…

强关联电子 · 物理学 2009-09-29 M. Nicklas , G. Sparn , R. Lackner , E. Bauer , F. Steglich

Cerium is a fascinating element due to its diverse physical properties, which include forming various crystal structures ($\gamma$, $\alpha$, $\alpha^{'}$, $\alpha^{''}$ and $\epsilon$), mixed valence behavior and superconductivity, making…

超导电性 · 物理学 2024-02-26 Yanan Zhang , Dajun Su , Zhaoyang Shan , Zihan Yang , Jiawen Zhang , Rui Li , Michael Smidman , Huiqiu Yuan

We calculate superconducting transition temperatures ($T_{\rm c}$) in sulfur hydrides H$_{2}$S and H$_{3}$S from first principles using the density functional theory for superconductors. At pressures of $\lesssim$150 GPa, the high values of…

超导电性 · 物理学 2015-07-08 Ryosuke Akashi , Mitsuaki Kawamura , Shinji Tsuneyuki , Yusuke Nomura , Ryotaro Arita

The prediction of superconductivity above 200 K in CaH$_6$ revolutionized research on hydrogen-rich superconductors, and subsequent experiments have verified this prediction, while unidentified peaks in XRD and the decrease in…

超导电性 · 物理学 2026-03-10 Wenbo Zhao , Zefang Wang , Ying Sun , Hefei Li , Hanyu Liu , Yu Xie

We report a detailed study of the polymorphic transitions in ternary stannide CeRuSn on high quality single crystals through a combination of X-ray diffraction experiments conducted at 300, 275 and 120 K, and measurements of the thermal…

强关联电子 · 物理学 2015-06-05 J. Fikáček , J. Prokleška , M. Míšek , J. Custers , S. Daniš , J. Prchal , V. Sechovský , I. Císařová

We study the transition temperature Tc(H) of a quasi-one-dimensional (Q1D) superconductivity which is derived from the quantum effect of an electron motion in a strong magnetic field. We calculate Tc(H) of both isotropic and anisotropic…

超导电性 · 物理学 2009-10-31 Mitake Miyazaki , Keita Kishigi , Yasumasa Hasegawa

The electrical resistivity, crystalline structure and electronic properties calculated from the experimentally measured atomic positions of the compound SmFeAsO$_{0.81}$F$_{0.19}$ have been studied up to pressures ~20GPa. The correlation…

The recently synthesized ThFeAsN iron-pnictide superconductor exhibits a $T_c$ of 30 K, the highest of the 1111-type series in absence of chemical doping. To understand how pressure affects its electronic properties, we carried out…

Understanding interfacial thermal transport is essential for improving thermal management in high-speed power electronic devices, where the efficient removal of excess heat is a critical challenge. In this study, a machine learning…

材料科学 · 物理学 2025-10-01 Lei Zhang , Fei Tian , Ke Chen , Zhongbo Yan , Kun Cao

Comparing resistivity data of quasi-one dimensional superconductors (TMTSF)_2PF_6 and (TMTSF)_2ClO_4 along the least conducting c*-axis and along the high conductivity a -axis as a function of temperature and pressure, a low temperature…

The experimental determination of the superconducting transition requires the observation of the emergence of zero-resistance and perfect diamagnetism state. Based on the close relationship between superconducting transition temperature…

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