James Quilty’s Post

Higher measurement accuracy opens new window to the quantum world: A team has developed a new measurement method that, for the first time, accurately detects tiny temperature differences in the range of 100 microkelvin in the thermal Hall effect. Previously, these temperature differences could not be measured quantitatively due to thermal noise. Using the well-known terbium titanate as an example, the team demonstrated that the method delivers highly reliable results. The thermal Hall effect provides information about coherent multi-particle states in quantum materials, based on their interaction with lattice vibrations (phonons). @Poseidon-US #ScienceDaily #Technology

Important results on the nature of polariton thermalization have now been published in Nanophotonics. We've connected basic molecular spectral properties to nonequilibrium Bose-Einstein condensation in optical cavities. Key insight | exciton-phonon coupling to low-energy vibrational modes is essential for polariton thermalization | our study provides a straightforward analytical formula for calculating the thermalization rate based on the Stokes shift and emission linewidth. #polaritons #nanophotonics

The key to enhance the output of a thermoelectric device is to be able to regulate the thermoelectric voltage generation. Topological magnet Co3Sn2S2-based devices show the way to achieve that goal. Full article: https://lnkd.in/g3qZB_GT

Physicists Unlock the Secrets of Light-Induced Ferroelectricity in Quantum Materials Mid-infrared and terahertz laser pulses serve as potent instruments for altering the characteristics of quantum materials by specifically tailoring their crystal lattice. The induction of ferroelectricity in SrTiO3 when exposed to mid-infrared light is a significant example of this phenomenon. In this process, SrTiO3 undergoes a change to a state where electrical dipoles are permanently aligned, a condition not found in its natural state of equilibrium. The process driving this remarkable transformation remains a mystery. Continue reading https://lnkd.in/dvbzzEZ4

Barkhausen noise is a noise-like signal induced in ferromagnetic materials by an applied magnetic field. It indicates changes in the material's residual stress state or physical damage in thin film structures. This phenomenon is used in non-destructive testing to assess material characteristics like hardness and stress.

We have recently published an article on "Dynamical behavior of stacked blue laser diode consisting of two active regions with wide InGaN quantum wells and two tunnel junctions". Have a look here: https://lnkd.in/e9C6MvCa

Magnetic avalanche triggered by quantum effects: 'Barkhausen noise' detected for first time phys.org  Iron screws and other so-called ferromagnetic materials are made up of atoms with electrons that act like little magnets.

This article proposes a strategy to consider the dielectric effects in the thin-wire integro-differential formulation and applies it to analyzing #microstrip #metasurfaces (#MTSs) that support magnetic resonances. These structures comprise a periodic arrangement of subwavelength unit cells; therefore, the thin-wire approximation can be applied to analyze them. However, the substrate is usually disregarded. This work achieves more accurate results with a homogeneous equivalent medium approximation considering the dielectric properties. ---- Icaro Veloso Soares, Ursula Resende More details can be found at this link: https://lnkd.in/emYQv9T6

🚀 Optimal synthesis of Tl-2223 superconductor achieved! High phase stability, critical magnetic field ~20T, and transition temperature ~122K. 🧪🔬 #Superconductors #MaterialsScienc

#Optical_properties (Dielectric Permittivity, IR Intensity, Energy Loss, Refractive Index by RESCU Software. https://lnkd.in/gdCEr8Se #nanotechnology #materials #materialsscience #simulationsoftware #modelingandsimulation #nanotech #quantumtechnology #physics #atomic #crystals #2dmaterials #graphene #dft #bandstructures #DensityofState #ivcurve #semiconductor #moleculardevice #bilayer #conductance #transmission #transportcalculation #spintronics #helicalstates #topological #insulator