Results 61 to 70 of about 17,657 (203)
Advanced Materials Technologies, EarlyView.A compact transverse thermoelectric device harnessing the anomalous Nernst and spin Seebeck effects enables on‐chip energy harvesting from waste heat in microelectronics. Constructed on a silicon substrate with a CoTb‐based heterostructure, the device generates over 10 mV without external magnetic fields, and stores the harvested energy in a capacitor ...
J. Alejandro De Sousa +2 more
wiley +1 more source
Next Nearest Neighbors Effects on Berry Curvature of Graphene
, 2012 In this paper energy bands and Berry curvature of graphene was studied. Desired Hamiltonian regarding the next-nearest neighbors was obtained by tight-binding model.
T. Farajollahpour +3 more
semanticscholar +1 more source
Quantum spin-Hall effect on the M\"obius graphene ribbon
, 2019 Topological phases of matter have revolutionized quantum engineering. Implementing a curved space Dirac equation solver based on the quantum Lattice Boltzmann method, we study the topological and geometrical transport properties of a M\"obius graphene ...
Flouris, Kyriakos +2 more
core +1 more source
Advanced Optical Materials, EarlyView.This work quantifies chirality through the continuous chirality measure (CCM). The CCM is correlated to a variety of properties: spin‐orbit field, orbital angular momentum, circular dichroism, absorption dissymmetry factor (gCD) and the circular photogalvanic effect.
Andrew Grieder, Shihao Tu, Yuan Ping
wiley +1 more source
On calculating the Berry curvature of Bloch electrons using the KKR method
, 2011 We propose and implement a particularly effective method for calculating the Berry curvature arising from adiabatic evolution of Bloch states in wave vector k space.
Fedorov, D. V. +5 more
core +1 more source
Illuminating Quantum Phenomena in 2D Materials: The Power of Optical Spectroscopy
Advanced Optical Materials, EarlyView.Atomically thin 2D materials host quantum tunnelling, plasmonic and excitonic phenomena driven by reduced dimensionality and strong many‐body interactions. This review links these effects to state‐of‐the‐art optical probes—NSOM, pump–probe, CARS, TRR, and optical frequency comb spectroscopy—highlighting how their ultrahigh spatial–temporal resolution ...
Yuhui Zhou +4 more
wiley +1 more source
Methodology for Topological Interface Engineering in 2D Photonic Crystals
Advanced Photonics Research, EarlyView.This article introduces an automated framework for topological photonic crystal design. It features an iterative band connection method for identifying band crossings, a data‐driven approach for band symmetry recognition, and analysis of how topological mode dispersion trades off with photonic band‐gap size.
Ondřej Novák +2 more
wiley +1 more source
Geometrodynamics of polarized light: Berry phase and spin Hall effect in a gradient-index medium
, 2009 We review the geometrical-optics evolution of an electromagnetic wave propagating along a curved ray trajectory in a gradient-index dielectric medium. A Coriolis-type term appears in Maxwell equations under transition to the rotating coordinate system ...
Bliokh, Konstantin Y.
core +1 more source
Sensitive Sub‐THz Photodetection in Twisted Graphene with Broad Spectral Response
Advanced Science, EarlyView.A dual‐gated twisted monolayer–bilayer graphene (TMBG) phototransistor enables ultrabroadband detection spanning visible to sub‐THz regimes. Gate‐tunable moiré bands produce photothermoelectric responses at zero bias and bolometric responses under applied bias.
Jiaxin Wu +12 more
wiley +1 more source
Ferroelectric Properties of Bilayer MoS2/WS2 Heterostructure Modulated by Twist Angle
Advanced Science, EarlyView.The study reports the precise control of interlayer twist angles in the bilayer MoS2/WS2 heterostructure. The ferroelectric properties of MoS2/WS2 heterostructure can be significantly modulated by designing twist angles, resulting from the distortion of polar symmetric regions induced by Moiré patterns.
Liyao Wang +12 more
wiley +1 more source