Results 81 to 90 of about 613,974 (314)

Néel Tensor Torque in Polycrystalline Antiferromagnets

open access: yesAdvanced Materials, EarlyView.
This work introduces a Néel tensor torque based on a rank‐two symmetric tensor capturing spin correlations in a polycrystalline antiferromagnet. It shows the Néel tensor can be shaped and reshaped through the spin‐orbit torque (SOT) technique, enabling field‐free SOT switching with a specific polarity of the adjacent ferromagnet. This discovery opens a
Chao‐Yao Yang   +4 more
wiley   +1 more source

On the Eigenvalue Density of Real and Complex Wishart Correlation Matrices

open access: yes, 2010
Wishart correlation matrices are the standard model for the statistical analysis of time series. The ensemble averaged eigenvalue density is of considerable practical and theoretical interest.
C. Chatfield   +9 more
core   +1 more source

Eigenvalues and perfect matchings [PDF]

open access: yesLinear Algebra and its Applications, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Brouwer, A.E., Haemers, W.H.
openaire   +4 more sources

Spatially Encoded Polaritonic Ultra‐Strong Coupling in Gradient Metasurfaces with Epsilon‐Near‐Zero Modes

open access: yesAdvanced Materials, EarlyView.
Dielectric dual gradient metasurfaces supporting quasi‐bound‐states‐in‐the‐continuum are leveraged to spatially encode both the spectral and coupling parameter space and demonstrate ultra‐strong coupling to an epsilon‐near‐zero mode in an ultra‐thin SiO2 layer.The platform achieves exceptional mode overlap, reaching a normalized coupling strength of η =
Enrico Baù   +7 more
wiley   +1 more source

A modified atmospheric non-hydrostatic model on low aspect ratio grids: part II

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2013
Sun et al. (2012) proposed a modified non-hydrostatic model (MNH), in which the left-hand side of the continuity equation is multiplied by a parameter δ (4≤δ≤16 in the article) to suppress high-frequency acoustic waves.
Wen-Yih Sun   +2 more
doaj   +1 more source

Eigenvalue distribution of the Dirac operator at finite temperature with (2+1)-flavor dynamical quarks using the HISQ action

open access: yes, 2011
We report on the behavior of the eigenvalue distribution of the Dirac operator in (2+1)-flavor QCD at finite temperature, using the HISQ action. We calculate the eigenvalue density at several values of the temperature close to the pseudocritical ...
Heller, U. M.   +3 more
core   +1 more source

Relation of Continuous Chirality Measure to Spin and Orbital Polarization, and Chiroptical Properties in Solids

open access: yesAdvanced 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

Multiple eigenvalues

open access: yesLinear Algebra and its Applications, 2008
19 pages, 1 figure, 2 ...
openaire   +2 more sources

Dark‐State Guided‐Mode Resonance Sensors: Engineering Miniature Sensing Platforms

open access: yesAdvanced Optical Materials, EarlyView.
This research introduces compact guided‐mode resonance sensing using Gaussian‐beam‐induced symmetry breaking to excite dark states. The method generates high‐quality resonance signals in a small area, demonstrating a sensor with 128 micro‐cells and 200 nm RIU−1 sensitivity, showing potential for lab‐on‐chip and biosensing applications.
Yeong Hwan Ko   +2 more
wiley   +1 more source

On the condition numbers of a multiple generalized eigenvalue

open access: yes, 2010
For standard eigenvalue problems, a closed-form expression for the condition numbers of a multiple eigenvalue is known. In particular, they are uniformly 1 in the Hermitian case, and generally take different values in the non-Hermitian case.
Nakatsukasa, Yuji
core  

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