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Absence of bulk charge density wave order in the normal state of UTe.
Nat Commun
November 2024
Los Alamos National Laboratory, Los Alamos, NM, USA.
A spatially modulated superconducting state, known as pair density wave (PDW), is a tantalizing state of matter with unique properties. Recent scanning tunneling microscopy (STM) studies revealed that spin-triplet superconductor UTe hosts an unprecedented spin-triplet, multi-component PDW whose three wavevectors are indistinguishable from a preceding charge-density wave (CDW) order that survives to temperatures well above the superconducting critical temperature, T. Whether the PDW is the mother or a subordinate order remains unsettled.
View Article and Find Full Text PDFSuperconductivity and nematic order in a new titanium-based kagome metal CsTiBi without charge density wave order.
Nat Commun
November 2024
Beijing National Center for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, PR China.
The cascade of correlated topological quantum states in the newly discovered vanadium-based kagome superconductors, AVSb (A = K, Rb, and Cs), with a Z topological band structure has sparked immense interest. Here, we report the discovery of superconductivity and electronic nematic order in high-quality single-crystals of a new titanium-based kagome metal, CsTiBi, that preserves the translation symmetry, in stark contrast to the charge density wave superconductor AVSb. Transport and magnetic susceptibility measurements show superconductivity with an onset superconducting transition temperature T of approximately 4.
View Article and Find Full Text PDFSwitching dynamics in Al/InAs nanowire-based gate-controlled superconducting switch.
Nat Commun
October 2024
Department of Physics, Institute of Physics, Budapest University of Technology and Economics, Müegyetem rkp. 3., H-1111, Budapest, Hungary.
The observation of the gate-controlled supercurrent (GCS) effect in superconducting nanostructures increased the hopes for realizing a superconducting equivalent of semiconductor field-effect transistors. However, recent works attribute this effect to various leakage-based scenarios, giving rise to a debate on its origin. A proper understanding of the microscopic process underlying the GCS effect and the relevant time scales would be beneficial to evaluate the possible applications.
View Article and Find Full Text PDFWhy Shot Noise Does Not Generally Detect Pairing in Mesoscopic Superconducting Tunnel Junctions.
Phys Rev Lett
February 2024
Leiden Institute of Physics, Leiden University, 2333 CA Leiden, The Netherlands.
The shot noise in tunneling experiments reflects the Poissonian nature of the tunneling process. The shot-noise power is proportional to both the magnitude of the current and the effective charge of the carrier. Shot-noise spectroscopy thus enables us, in principle, to determine the effective charge q of the charge carriers of that tunnel.
View Article and Find Full Text PDFRecent advances in glucose-oxidase-based nanocomposites for diabetes diagnosis and treatment.
J Mater Chem B
September 2023
State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
Article Synopsis
- * Nanomaterials that immobilize GOx enhance glucose sensor performance by improving electron movement and have led to the creation of insulin-loaded carriers that respond to glucose levels.
- * The paper reviews various GOx-based nanomaterials for glucose monitoring and insulin delivery, discussing recent advancements, challenges, and future opportunities in this area of research.
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