Results 111 to 120 of about 2,194,014 (300)

Emergent Spin Supersolids in Frustrated Quantum Materials

Advanced Materials, EarlyView.
This review highlights developments in the study of spin super‐solids in frustrated quantum materials. Advanced experimental characterizations and computational studies enable a comprehensive understanding of the driving mechanisms of spin super‐solidity in various layered transition‐metal compounds, bridging materials, experiments, and theory aspects.
Yixuan Huang, Seiji Yunoki, Sadamichi Maekawa   +2 more
wiley   +1 more source

Essential spectrum of a system of singular differential operators and the asymptotic Hain–Lüst operator

, 2001
We consider a matrix differential operator with singular entries which arises in magnetohydrodynamics. By means of the asymptotic Hain-Lust operator and some pseudo-differential operator techniques, we determine the essential spectrum of this operator ...
Mennicken, Reinhard, Naboko, Serguei, Tretter, Christiane   +2 more
core   +1 more source

Regulating Phase Evolution and Crystallization Dynamics Enables Low Open‐Circuit Voltage Deficit in Wide‐Bandgap Cu2ZnSnS4 Solar Cells

Advanced Materials, EarlyView.
Bilayer composition‐modulated sulfurization (BCMS) regulates Cu redistribution in solution‐processed Cu2ZnSnS4, suppressing Cu2SnS3 and favoring the direct transformation pathway, while transforming the crystallization from surface‐dominated growth to a more synchronized process.
Hang Geng, Jingwen Cao, Jialiang Huang, Ao Wang, Zuoyun Wang, Xiaojie Yuan, Yidong Liu, Chenghan Zhao, Jialin Cong, Kaiwen Sun, Xiaojing Hao   +10 more
wiley   +1 more source

Computation of Pseudo-Differential Operators

, 1992
A simple algorithm is described for computing general pseudo-differential operator actions. Our approach is based on the asymptotic expansion of the symbol together with the Fast Fourier Transform (FFT).
Bao, Gang, Symes, William W.
core  

A HAMILTONIAN PATH INTEGRAL FOR A DEGENERATE PARABOLIC PSEUDO-DIFFERENTIAL OPERATOR [PDF]

, 1996
The symbol of the fundamental solution for a degenerate parabolic pseudo-differential operator of order m (> 0) can be described in terms of a Hamiltonian path integral. This Hamiltonian path integral converges in the topology of the symbol class S2mλ,
Naoto Kumano-go, KUMANO-GO, NAOTO
core  

Ferrocene‐Based Self‐Assembled Monolayers Enable Ultra‐High Specific Detectivity in Perovskite Photodetectors

Advanced Materials, EarlyView.
We report perovskite photodetectors with record specific detectivities exceeding 1013 Jones with a novel molecular design strategy to functionalize self‐assembled monolayers (SAMs) with ferrocene (Fc) derivatives. Fc‐SAM‐based devices also exhibit strong operational stability and enable data transmission rates exceeding 1 Mbps in a LiFi system ...
Edoardo Angela, William D. J. Tremlett, Francesco Vanin, William J. O. Rodriguez Kazeem, Zhuoran Qiao, Davide Nodari, Francesco Furlan, Zonglong Zhu, Martyn A. McLachlan, Nicholas J. Long, Nicola Gasparini   +10 more
wiley   +1 more source

Endpoint boundedness of toroidal pseudo-differential operators

Open Mathematics
In this note, we prove that the toroidal pseudo-differential operator is bounded from L∞(Tn){L}^{\infty }\left({{\mathbb{T}}}^{n}) to BMO(Tn){\rm{BMO}}\left({{\mathbb{T}}}^{n}) if the symbol belongs to the toroidal Hörmander class Sρ,δn(ρ−1)∕2(Tn×Zn){S}_{
Ramla Benhamoud
doaj   +1 more source

Characterization of Pseudo-Differential Operators Associated with the Coupled Fractional Fourier Transform

Axioms
The main aim of this article is to derive certain continuity and boundedness properties of the coupled fractional Fourier transform on Schwartz-like spaces.
Shraban Das, Kanailal Mahato, Ahmed I. Zayed   +2 more
doaj   +1 more source

Accelerated Materials Discovery Through In Situ X‐ray Diffraction: Solvothermal Formation of PdxMy (M═Si, Ge, Sn, Pb) Intermetallic Nanoparticles

Advanced Materials, EarlyView.
In situ PXRD data on solvothermal reactions accelerate materials discovery while simultaneously providing fundamental insights into complex crystal formation processes. Using PdxMy (M = Si, Ge, Sn, Pb) as an example, a general formation mechanism is identified, and specific synthesis strategies for ex situ preparation of SnPd2, Sn13Pd20, and SnPd ...
Anders Bæk Borup, Bo Brummerstedt Iversen   +1 more
wiley   +1 more source

On a digital approximation for pseudo-differential operators

, 2020
We introduce a concept of a discrete pseudo-differential operator using general ideas of the theory and would like to show correlations between continuous and discrete ...
Vasilyev, A., Vasilyev, V.
core