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Effect of Dispersed ZrO Particles on Microstructure Evolution and Superconducting Properties of Nb-Ti Alloy.
Materials (Basel)
December 2024
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wrocław, Poland.
The influence of dispersed ZrO particles on the microstructure evolution and the superconducting properties of a Nb-Ti alloy was investigated. The studied materials were prepared by different methods including mechanical alloying (MA) and arc-melting. The obtained samples were studied by X-ray diffraction (XRD) and vibrating-sample magnetometer (VSM).
View Article and Find Full Text PDFTwofold Anisotropic Superconductivity in Bilayer T_{d}-MoTe_{2}.
Phys Rev Lett
November 2024
Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
Article Synopsis
- Noncentrosymmetric two-dimensional superconductors like few-layer T_{d}-MoTe_{2} exhibit unique superconducting properties, including upper critical fields exceeding the Pauli limit by up to 600%.
- The enhancement of these properties is still debated, with theories suggesting influences from either spin-orbit parity coupling or tilted Ising spin-orbit coupling.
- In bilayer T_{d}-MoTe_{2}, experiments show superconductivity has a twofold symmetry influenced by magnetic and electric fields, and findings support tilted Ising spin-orbit coupling as the main mechanism.
Crossover from Conventional to Unconventional Superconductivity in 2M-WS.
Nano Lett
December 2024
Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071, United States.
Leveraging the reciprocal-space proximity effect between superconducting bulk and topological surface states (TSSs) offers a promising way to topological superconductivity. However, elucidating the mutual influence of bulk and TSSs on topological superconductivity remains a challenge. Here, we report pioneering transport evidence of a thickness-dependent transition from conventional to unconventional superconductivity in 2M-phase WS (2M-WS).
View Article and Find Full Text PDFThe transition-metal-dichalcogenide family as a superconductor tuned by charge density wave strength.
Nat Commun
November 2024
The Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem, Israel.
In metallic transition metal dichalcogenides (TMDs), which remain superconducting down to single-layer thickness, the critical temperature T decreases for Nb-based, and increases for Ta-based materials. This contradicting trend is puzzling, impeding the development of a unified theory. Here we study the thickness-evolution of superconducting tunneling spectra in TaSheterostructures.
View Article and Find Full Text PDFPossible Superconductivity Transition in Nitrogen-Doped Lutetium Hydride Observed at Megabar Pressure.
Adv Sci (Weinh)
January 2025
Institute of High Pressure Physics, School of Physical Scientific and Technology, Ningbo University, Ningbo, 315211, People's Republic of China.
The pursuit of room-temperature superconductivity at an accessible synthetic pressure has been a long-held dream for both theoretical and experimental physicists. Recently, a controversial report by Dasenbrock-Gammon et al. claims that the nitrogen-doped lutetium trihydride exhibits room-temperature superconductivity at near-ambient pressure.
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