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Temperature and field dependent measurements of the electrical resistance of different natural graphite samples, suggest the existence of superconductivity at room temperature in some regions of the samples. To verify whether…

Superconductivity · Physics 2018-02-02 Markus Stiller , Pablo D. Esquinazi , Jose Barzola-Quiquia , Christian E. Precker

Electrical magnetoresistance and tunnel diode oscillator measurements were performed under external magnetic fields up to 41 T applied along the crystallographic b-axis (hard axis) of UTe$_2$ as a function of temperature and applied…

High temperature superconducting (HTS) stacks of coated conductors (CCs) can work as strong trapped field magnets (TFMs) and show potential in electrical applications. Pulsed field magnetization (PFM) is a practical method to magnetize such…

Superconductivity · Physics 2018-07-04 Shengnan Zou , Victor Manuel Rodriguez Zermeno , Francesco Grilli

The temperature dependence of the anisotropy of the superconducting state parameters, {\gamma}, was studied by torque magnetometry for the high temperature superconductor SmBa2Cu3Ox in magnetic fields of up to 9 T. The measurements were…

Superconductivity · Physics 2010-08-17 A. Kortyka , R. Puzniak , A. Wisniewski , M. Zehetmayer , H. W. Weber , C. Y. Tang , X. Yao , K. Conder

We report specific heat measurements at magnetic fields up to 20 T on the recently discovered superconductor SmFeAsO$_{0.85}$F$_{0.15}$. The B-T diagram of a polycrystalline SmFeAsO$_{0.85}$F$_{0.15}$ sample with T$_c$ = 46 K was…

Superconductivity · Physics 2009-11-13 C. Senatore , M. Cantoni , G. Wu , R. H. Liu , X. H. Chen , R. Flukiger

We present measurements of the superconducting and charge density wave critical temperatures (Tc and TCDW) as a function of pressure in the transition metal dichalchogenides 2H-TaSe2 and 2H-TaS2. Resistance and susceptibility measurements…

We show how the partition function of a network of parallel superconducting wires weakly coupled together by the proximity effect, subjected a vector potential along the wires can be mapped onto N-distinguishable two dimensional…

Superconductivity · Physics 2008-06-24 Kohjiro Kobayashi , David Stroud

Many experiments suggest that the unidentified low temperature phase (LTP) of alpha-(BEDT-TTF)_2KHg(SCN)_4 is most likely unconventional charge density wave (UCDW). To further this identification we present our theoretical study of the…

Strongly Correlated Electrons · Physics 2009-11-07 Balázs Dóra , Attila Virosztek , Kazumi Maki

Single crystals of the compound LaFePO were prepared using a flux growth technique at high temperatures. Electrical resistivity measurements reveal metallic behavior and a resistive transition to the superconducting state at a critical…

Superconductivity · Physics 2008-09-10 J. J. Hamlin , R. E. Baumbach , D. A. Zocco , T. A. Sayles , M. B. Maple

Stacks of REBCO tapes can trap large amounts of magnetic fields and can stay magnetized for long periods of times. This makes them an interesting option for major engineering applications such as motors, generators and magnetic bearings.…

Applied Physics · Physics 2020-05-19 Anang Dadhich , Enric Pardo , Milan Kapolka

We present a new technique for measuring the critical temperature Tc in the high pressure, high Tc electron-phonon-driven superconducting hydrides. This technique does not require connecting leads to the sample. In the multiphonon region of…

Superconductivity · Physics 2018-08-01 J. P. Carbotte , E. J. Nicol , T. Timusk

Conductor on a rounded core (CORC\textsuperscript{\textregistered}) cables with current densities beyond 300 A/mm$^{-2}$ at 4.2 K, and a capacity to retain around 90 $\%$ of critical current after bending to a diameter of 3.5 cm, make them…

Superconductivity · Physics 2022-07-13 M. U. Fareed , M. Kapolka , B. C. Robert , M. Clegg , H. S. Ruiz

More than a quarter century after the discovery of the high temperature superconductor (HTS) YBa$_2$Cu$_3$O$_{6+\delta}$ (YBCO) studies continue to uncover complexity in its phase diagram. In addition to HTS and the pseudogap there is…

In order to further investigate the magnetic state of the RAgAl series, the magnetization measurements on the TbAgAl compound from this series have been extended to higher fields of 12 Tesla in the temperature range 2K-300K. The electrical…

Strongly Correlated Electrons · Physics 2025-12-30 Ashwin Mohan , Radha S

By considering the Ginzburg-Landau model, compactified in one of the spatial dimensions, and using a modified Matsubara formalism, we determine the dependence of the superconducting transition temperature (T_c) of a film as a function of…

Soft Condensed Matter · Physics 2007-05-23 A. P. C. Malbouisson , J. M. C. Malbouisson , A. E. Santana

We fabricated a compact (13$\times$12$\times$12.5 mm${^3}$) trapped-field magnet by stacking 200 pieces of EuBa${_2}$Cu${_3}$O${_7}$ coated conductors with BaHfO${_3}$ nanorods as artificial pinning centers. It was magnetized by…

Superconductivity · Physics 2021-05-06 Masahiro Suyama , Sunseng Pyon , Yasuhiro Iijima , Satoshi Awaji , Tsuyoshi Tamegai

Superconductivity occurs in electrochemically doped molybdenum dichalcogenides samples thicker than four layers. While the critical temperature (Tc) strongly depends on the field effect geometry (single or double gate) and on the sample…

Superconductivity · Physics 2022-11-28 Giovanni Marini , Matteo Calandra

Transport current values of 7.5 x 104 A/cm2 at 4.2 K and self-field are reported for MbB2-based tapes. MgB2 strands were formed by directly filling commercially available MgB2 powder into Nb-lined, monel tubes and wire drawing. The wires…

Superconductivity · Physics 2007-05-23 M. D. Sumption , X. Peng , E. Lee , M. Tomsic , E. W. Collings

When investigating low-frequency (0.1 Hz) oscillations of miltiphase high-temperature cuprate superconductors (HTSC) Bi1,7Pb0,3Sr2Ca(n-1)CunOy (n=2-30), a wide attenuation peak with a maximal at T=200K detected. This peak was particularly…

Superconductivity · Physics 2017-10-31 J. G. Chigvinadze , J. V. Acrivos , S. M. Ashimov , D. D. Gulamova , G. J. Donadze

We present a study of the superconducting properties of the candidate topological superconductor Ti_(3)Sb. Electrical transport measurements show zero resistance with a T_(c,onset) of ~ 5.9 K with a transition width {\Delta}T_c~ 0.6 K. The…

Superconductivity · Physics 2023-03-15 R. Chapai , M. P. Smylie , H. Hebbeker , D. Y. Chung , W. -K. Kwok , J. F. Mitchell , U. Welp