Quantum confined electron–phonon interaction in silicon nanocrystals

DM Sagar, JM Atkin, PKB Palomaki, NR Neale… - Nano Letters, 2015 - ACS Publications
We study the micro-Raman spectra of colloidal silicon nanocrystals as a function of size,
excitation wavelength, and excitation intensity. We find that the longitudinal optical (LO) …

Superconducting properties of the tetragonal tungsten bronze and the superconducting phase diagram of the tungsten bronze family

N Haldolaarachchige, Q Gibson, J Krizan, RJ Cava - Physical review B, 2014 - APS
We report on the superconducting properties of the K x WO 3 tetragonal tungsten bronze.
The highest superconducting transition temperature (T c= 2.1 K) was obtained for K 0.38 WO …

Ordered and twinned structure in hexagonal-based potassium tungsten bronze nanosheets

S Jia, H Sang, W Zhang, H Zhang… - Journal of Applied …, 2013 - journals.iucr.org
Non-stoichiometric hexagonal-based potassium tungsten bronze (KxWO3) nanosheets were
synthesized by oxidizing tungsten foil in potassium hydroxide. The tungsten bronze …

Superconducting phase diagram of InxWO3 synthesized by indium deintercalation

JD Bocarsly, D Hirai, MN Ali, RJ Cava - Europhysics Letters, 2013 - iopscience.iop.org
We report the superconducting phase diagram of the hexagonal tungsten bronze (HTB) In x
WO 3. The In x WO 3 samples were prepared by indium deintercalation of the …

Structural distortion and electronic states of Rb doped WO 3 by X-ray absorption spectroscopy

YC Wang, CH Hsu, YY Hsu, CC Chang, CL Dong… - RSC …, 2016 - pubs.rsc.org
Rubidium tungsten bronzes (RbxWO3) have recently attracted much attention due to their
intriguing phenomena, such as complex structural phase transitions, strong electron …

First-Principles Study and Orbital-Fluctuation Effect on the Superconductivity in Tungsten Bronze AxWO3

T Sekikawa, R Watabe, J Ishizuka, Y Nitta… - Proceedings of the …, 2020 - journals.jps.jp
The superconductivity in the tungsten bronzes A x WO3 (A= Na, K, Rb, Cs) is investigated on
the basis of the first-principles calculation and the orbital-fluctuation theory. By taking …

Temperature dependence of phonon spectra and structural characteristics in multiferroic LuFe2O4 system

Y Hou, YP Yao, SN Dong, ML Teng… - Journal of Raman …, 2011 - Wiley Online Library
The phonon spectra and structural characteristics of the LuFe2O4 system were investigated
using X‐ray diffraction as well as Raman and infrared (IR) spectroscopic techniques. Two …

Characterization of K6Ta10.8O30 Microrods with Tetragonal Tungsten Bronze-Like Structure Obtained from Tailings from the Penouta Sn-Ta-Nb Deposit

B Sotillo, L Alcaraz, FA López, P Fernández - Nanomaterials, 2020 - mdpi.com
In this work, a deep characterization of the properties of K6Ta10. 8O30 microrods has been
performed. The starting material used to grow the microrods has been recovered from …

Experimental and theoretical investigation of a mesoporous K x WO 3 material having superior mechanical strength

S Dey, ST Anderson, RA Mayanovic, R Sakidja… - Nanoscale, 2016 - pubs.rsc.org
Mesoporous materials with tailored properties hold great promise for energy harvesting and
industrial applications. We have synthesized a novel tungsten bronze mesoporous material …

Charge Density Wave and Crystal Structure of ( and 0.22) Prepared by Hybrid Microwave Method

R Chen, C Gao, K Bu, X Hao, Z Wang, L Wen… - Journal of Low …, 2017 - Springer
Potassium tungsten bronzes K _ x WO _ 3 K x WO 3 (x= 0.20 x= 0.20 and 0.22) with the
coexistence of charge density wave (CDW) and superconductivity (SC) were prepared from …