The electrical transport properties of ultrathin YBa₂Cu₃O(7-x) films have been modified using an electric double layer transistor configuration employing an ionic liquid. A clear evolution from superconductor to insulator was observed in nominally 7 unit-cell-thick films. Using a finite size scaling analysis, curves of resistance versus temperature, R(T), over the temperature range from 6 to 22 K were found to collapse onto a single scaling function, which suggests the presence of a quantum critical point. However, the scaling fails at the lowest temperatures indicating the possible presence of an additional phase between the superconducting and insulating regimes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.107.027001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Heterointerface Built Up by Ultrathin Amorphous MoO Conformal Coating Enables VO·6HO with Superior Properties for Aqueous Zinc Batteries.
Nano Lett
January 2025
School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning 116034, China.
Layered VO·6HO is a promising candidate for aqueous zinc batteries (AZBs) but with moderate electrochemical performances. Herein, the charge storage properties of VO·6HO are markedly improved by building up the heterointerface on its surface using amorphous molybdenum trioxide as the heteromaterial. The amorphous molybdenum trioxide functioning as the proton reservoir enables the proton-involved electrochemical reactions and induces the formation of a built-in electric field along the [001] orientation at the heterointerface constructed by the (001) plane of VO·6HO, which could provide new diffusion pathways and extra sites for ion storage.
View Article and Find Full Text PDFFluidized Electrochemical Exfoliation of Layered Transition Metal Dichalcogenides toward Fast Production of High-Quality Nanosheets in the Aqueous Phase.
Nano Lett
January 2025
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
The transformation of bulk transition-metal dichalcogenide (TMD) particles into ultrathin nanosheets with both an acceptable yield and preserved crystalline integrity presents a substantial challenge in electrochemical exfoliation. This challenge arises from the continuous potential stress that the materials experience in traditional exfoliation setups. Herein, we propose a new fluidized electrochemical exfoliation (FEE) method to efficiently transform TMD powders into high-quality, few-layered TMD nanosheets in the aqueous phase.
View Article and Find Full Text PDFElectrostatic and Electronic Effects on Doped Nickel Oxide Nanofilms for Water Oxidation.
J Am Chem Soc
January 2025
School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Tyree Energy Technologies Building, 229 Anzac Parade, Kensington, NSW 2052, Australia.
An ideal water-splitting electrocatalyst is inexpensive, abundant, highly active, stable, selective, and durable. The anodic oxygen evolution reaction (OER) is the main bottleneck for H production with a complex and not fully resolved mechanism, slow kinetics, and high overpotential. Nickel oxide-based catalysts (NiO) are highly active and cheaper than precious metal catalysts.
View Article and Find Full Text PDFCryo-electron tomography pipeline for plasma membranes.
Nat Commun
January 2025
National Heart, Lung, and Blood Institute, US National Institutes of Health, Bethesda, MD, USA.
Cryo-electron tomography (cryoET) provides sub-nanometer protein structure within the dense cellular environment. Existing sample preparation methods are insufficient at accessing the plasma membrane and its associated proteins. Here, we present a correlative cryo-electron tomography pipeline optimally suited to image large ultra-thin areas of isolated basal and apical plasma membranes.
View Article and Find Full Text PDFStructural-morphological insights into optimization of hydrothermally synthesized MoSe nanoflowers for improving supercapacitor applications.
Dalton Trans
January 2025
Department of Physics, RPS Degree College, Balana, Mahendergarh, Haryana 123029, India.
The present work reports a clear and improved hydrothermal methodology for the synthesis of MoSe nanoflowers (MNFs) at 210 °C. To observe the effect of temperature on the fascinating properties, the process temperature was modified by ±10 °C. The as-prepared MNFs were found to consist of 2D nanosheets, which assembled into a 3D flower-like hierarchical morphology van der Waals forces.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!