We report on temperature dependence of the infrared reflectivity spectra of a single crystalline herbertsmithite in two polarizations-parallel and perpendicular to the kagome plane of Cu atoms. We observe anomalous broadening of the low frequency phonons possibly caused by fluctuations in the exotic dynamical magnetic order of the spin liquid.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/1361-648X/aa5566 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An overview of the use of non-titanium MXenes for photothermal therapy and their combinatorial approaches for cancer treatment.
Nanoscale Adv
December 2024
Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad Palakkad Kerala 678 623 India.
Since the initial publication on the first TiCT MXene in 2011, there has been a significant increase in the number of reports on applications of MXenes in various domains. MXenes have emerged as highly promising materials for various biomedical applications, including photothermal therapy (PTT), drug delivery, diagnostic imaging, and biosensing, owing to their fascinating conductivity, mechanical strength, biocompatibility and hydrophilicity. Through surface modification, MXenes can mitigate cytotoxicity, enhance biological stability, and improve histocompatibility, thereby enabling their potential use in biomedical applications.
View Article and Find Full Text PDFInvestigation into the vibrational characteristics of monolayered ruddlesden-popper compounds (Sr, Ba)HfO.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Department of Physics, Deshbandhu College (University of Delhi), New Delhi 110019, India.
The analysis of Raman and Infrared (IR) phonons in monolayered tetragonal (Sr, Ba)HfO compounds, which exhibit D symmetry and belong to the I4/mmm phase of space group 139 with Z = 2, has been conducted using normal coordinates. The SrHfO and BaHfO compounds are the first members of the Ruddlesden-Popper (RP) series denoted as (Sr, Ba)HfO with n = 1. Nine Short-Range Force Constants (SRFC) have been included in theoretical calculations to analyze the optical phonons of SrHfO and BaHfO compounds within the I4/mmm phase.
View Article and Find Full Text PDFEnhanced upconversion and photoconductive nanocomposites of lanthanide-doped nanoparticles functionalized with low-vibrational-energy inorganic ligands.
Nanoscale Horiz
January 2025
Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Upconverting nanoparticles (UCNPs) convert near-infrared (IR) light into higher-energy visible light, allowing them to be used in applications such as biological imaging, nano-thermometry, and photodetection. It is well known that the upconversion luminescent efficiency of UCNPs can be enhanced by using a host material with low phonon energies, but the use of low-vibrational-energy inorganic ligands and non-epitaxial shells has been relatively underexplored. Here, we investigate the functionalization of lanthanide-doped NaYF UCNPs with low-vibrational-energy SnS ligands.
View Article and Find Full Text PDFGiant Purcell Broadening and Lamb Shift for DNA-Assembled Near-Infrared Quantum Emitters.
ACS Nano
January 2025
Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
Controlling the light emitted by individual molecules is instrumental to a number of advanced nanotechnologies ranging from super-resolution bioimaging and molecular sensing to quantum nanophotonics. Molecular emission can be tailored by modifying the local photonic environment, for example, by precisely placing a single molecule inside a plasmonic nanocavity with the help of DNA origami. Here, using this scalable approach, we show that commercial fluorophores may experience giant Purcell factors and Lamb shifts, reaching values on par with those recently reported in scanning tip experiments.
View Article and Find Full Text PDFStrain-tunable optoelectronic and photocatalytic properties of 2D GaN/MoSiP heterobilayers: potential optoelectronic/photocatalytic materials.
Nanoscale
January 2025
School of Science, Jiangsu University of Science and Technology, Zhenjiang 212001, China.
Herein, we propose a new GaN/MoSiP van der Waals (vdWs) heterostructure constructed by vertically stacking GaN and MoSiP monolayers. Its electronic, optical, and photocatalytic properties are explored DFT++BSE calculations. The calculated binding energy and phonon spectrum demonstrated the material's high stabilities.
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!