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Niobium and its alloys with early transition metals have been extensively studied for their excellent superconducting properties. They have high transition temperatures, strong upper critical fields, and high critical current densities,…

超导电性 · 物理学 2025-12-23 R. K. Kushwaha , S. Jangid , P. Mishra , S. Sharma , R. P. Singh

Silicon Carbide is renowned for its exceptional thermal stability, making it a crucial material for high-temperature power devices in extreme environments. While optically detected magnetic resonance in SiC has been widely studied for…

仪器与探测器 · 物理学 2025-06-10 F. Sgrignuoli , I. Viti , Z. G. Yu , E. Allridge , P. Lenahan , S. Goswami , R. Ghandi , M. Aghayan , D. M. Shaddock

The results of micro-structural and detailed magnetization studies are reported here for our recently published TbSr2Cu2.7Mo0.3O7+d superconductor with a transition temperature (Tc) at as high as 80 K [1]. From XRD and EDX the sample was…

Solders with superconducting properties around $4\,{\rm K}$ are useful in low magnetic field environments for AC current leads or in electrical and mechanical bonds. Accurate knowledge of these properties are needed in high precision…

We successfully synthesized the nickel-based compound GdONiBi with superconducting transition temperature about 4.5 K. By partially substituting the element Gd with Sr to introduce holes into the material, we got new superconductor…

超导电性 · 物理学 2008-08-01 Junyi Ge , Shixun Cao , Jincang Zhang

We present a study of heat transport in the cuprate superconductor Bi_{2+x}Sr_{2-x}CuO_{6+\delta} at subkelvin temperatures and in magnetic fields as high as 25T. In several samples with different doping levels close to optimal, the…

超导电性 · 物理学 2009-11-11 Cyril Proust , Kamran Behnia , Romain Bel , Duncan Maude , S. I. Vedeneev

We report the synthesis, characterization, low-temperature magnetic, and thermodynamic measurements of the novel milli-Kelvin adiabatic demagnetization refrigeration (mK-ADR) candidate material NaYbGeO$_4$ which exhibits a distorted square…

强关联电子 · 物理学 2023-12-12 U. Arjun , K. M. Ranjith , A. Jesche , F. Hirschberger , D. D. Sarma , P. Gegenwart

We report ^77Se-NMR measurements in the recent discovered K_0.8Fe_2Se_2 with the superconducting transition temperature T_c=32 K. The characteristic point of this system is that the high density of state is located in the vicinity of the…

Thermal switching by magnetic fields is one of the important functionalities in thermal management technologies. In low-temperature devices, superconducting states can be used as a magneto-thermal-switching (MTS) component, because carrier…

材料科学 · 物理学 2025-03-04 Miku Yoshida , Hiroto Arima , Aichi Yamashita , Ken-ichi Uchida , Yoshikazu Mizuguchi

The device of electric double-layer transistor (EDLT) with ionic liquid has been employed as an effective way to dope carriers over a wide range, which can induce metallic state, magnetic reconstruction and superconducting transition.…

超导电性 · 物理学 2018-08-30 Shuai Zhang , Moran Gao , Huanyan Fu , Xinmin Wang , Zhian Ren , Genfu Chen

We study heat transport in hybrid normal metal - superconductor - normal metal (NSN) structures. We find the thermal conductance of a short superconducting wire to be strongly enhanced beyond the BCS value due to inverse proximity effect.…

超导电性 · 物理学 2019-08-15 J. T. Peltonen , P. Virtanen , M. Meschke , J. V. Koski , T. T. Heikkilä , J. P. Pekola

We report the observation of novel behaviour in the radio frequency (rf) and microwave response of DyNi_2B_2C over a wide range of temperature (T) and magnetic field (H) in the antiferromagnetic (AFM) and superconducting (SC) states. At…

凝聚态物理 · 物理学 2009-10-30 Durga P. Choudhury , H. Srikanth , S. Sridhar , ; P. C. Canfield

Superconductivity in transition metal nitrides (TMNs) has been investigated for a long time, such as zirconium nitride (ZrN) with a superconducting transition temperature Tc of 10 K. Recently, a phase diagram has been revealed in ZrNx with…

超导电性 · 物理学 2023-07-07 Zheng-Wei Liao , Xin-Wei Yi , Jing-Yang You , Bo Gu , Gang Su

In 1966, Pierre-Gilles de Gennes proposed a non-volatile mechanism for switching superconductivity on and off in a magnetic device. This involved a superconductor (S) sandwiched between ferromagnetic (F) insulators in which the net magnetic…

A number of current approaches to quantum and neuromorphic computing use superconductors as the basis of their platform or as a measurement component, and will need to operate at cryogenic temperatures. Semiconductor systems are typically…

Attaining milli-Kelvin temperatures is often a prerequisite for the study of novel quantum phenomena and the operation of quantum devices. Adiabatic demagnetization refrigeration (ADR) is an effective, easy and sustainable alternative to…

材料科学 · 物理学 2023-07-12 U. Arjun , K. M. Ranjith , A. Jesche , F. Hirschberger , D. D. Sarma , P. Gegenwart

High superconducting transition temperature is favorable for the applications of superconductors. Some cuprate superconductors have the transition temperatures above 100 K, such as the Hg- or Tl-based 1223 and 1234 phases, but many of them…

超导电性 · 物理学 2024-10-11 Meng-Jun Ou , Yuecong Liu , Yi Wang , Hai-Hu Wen

There is strong evidence that magnetic interactions play a crucial role in the mechanism driving high-temperature superconductivity in cuprate superconductors. To investigate this further we have done neutron scattering experiments on the…

Subsequent to our recent report of SDW type transition at 190 K and antiferromagnetic order below 20 K in EuFe2As2, we have studied the effect of K-doping on the SDW transition at high temperature and AF order at low temperature. 50% K…

超导电性 · 物理学 2009-11-13 H. S. Jeevan , Z. Hossain , Deepa Kasinathan , Helge Rosner , C. Geibel , P. Gegenwart

Type I superconductivity has recently been reported for the Dirac semimetal PdTe$_2$ (Tc approximately 1.6K) with, remarkably, multiple critical fields and a complex phase diagram. Here, measurements of the specific heat utilizing a thermal…

超导电性 · 物理学 2021-03-10 M. V. Salis , Y. K. Huang , A. de Visser