Results 31 to 40 of about 1,223,887 (345)

Is perpendicular magnetic anisotropy essential to all-optical ultrafast spin reversal in ferromagnets?

open access: yes, 2017
All-optical spin reversal presents a new opportunity for spin manipulations, free of a magnetic field. Most of all-optical-spin-reversal ferromagnets are found to have a perpendicular magnetic anisotropy (PMA), but it has been unknown whether PMA is ...
Bai, Y. H.   +2 more
core   +1 more source

Reverse-engineering Reverse Mathematics

open access: yesAnnals of Pure and Applied Logic, 2013
Abstract An important open problem in Reverse Mathematics (Montalban, 2011 [16] ; Simpson, 2009 [25] ) is the reduction of the first-order strength of the base theory from I Σ 1 to I Δ 0 + exp . The system ERNA, a version of Nonstandard Analysis based on the system I Δ 0 + exp , provides a partial ...
openaire   +2 more sources

Phase Reversal Diffraction in incoherent light

open access: yes, 2009
Phase reversal occurs in the propagation of an electromagnetic wave in a negatively refracting medium or a phase-conjugate interface. Here we report the experimental observation of phase reversal diffraction without the above devices.
De-Zhong Cao   +6 more
core   +1 more source

Microwave spectroscopy on magnetization reversal dynamics of nanomagnets with electronic detection [PDF]

open access: yes, 2006
We demonstrate a detection method for microwave spectroscopy on magnetization reversal dynamics of nanomagnets. Measurement of the nanomagnet anisotropic magnetoresistance was used for probing how magnetization reversal is resonantly enhanced by ...
B. J. van Wees   +6 more
core   +3 more sources

Time-Reversal Symmetry and Arrow of Time in Quantum Mechanics of Open Systems

open access: yes, 2019
It is one of the most important and long-standing issues of physics to derive the irreversibility out of a time-reversal symmetric equation of motion. The present paper considers the breaking of the time-reversal symmetry in open quantum systems and the ...
Hatano, Naomichi, Ordonez, Gonzalo
core   +1 more source

Non-Standard Time Reversal for Particle Multiplets and the Spin-Flavor Structure of Hadrons [PDF]

open access: yes, 2001
We show that a system of quarks interacting with chiral fields provides a physical representation of a ``non-standard'' time reversal for particle multiplets proposed by Weinberg.
Anselmino, M.   +3 more
core   +3 more sources

Bölge Adliye Mahkemelerinin Bozma Kararlarının Yokluk Kavramı ile Birlikte Değerlendirilmesi

open access: yesAnadolu Üniversitesi Hukuk Fakültesi Dergisi
Kelime anlamı itibarıyla yeniden başlamak veya sözün başı anlamlarıyla özdeşleşen istinaf kavramı, iç hukuk sistemimizde ilk derece mahkemeleri tarafından verilen kararların ilgilerin istemi üzerine bir üst mahkeme tarafından hem hukuken hem de maddi ...
Metin Kaplan
doaj   +1 more source

A thalamocortical circuit for updating action-outcome associations

open access: yeseLife, 2019
The ability to flexibly use knowledge is one cardinal feature of goal-directed behaviors. We recently showed that thalamocortical and corticothalamic pathways connecting the medial prefrontal cortex and the mediodorsal thalamus (MD) contribute to ...
Virginie Fresno   +4 more
doaj   +1 more source

Reversal of Azithromycin Resistance in Staphylococcus saprophyticus by Baicalin

open access: yesFrontiers in Veterinary Science, 2022
In recent years, the efficacy of antibiotics has been threatened by the evolution of bacterial resistance. We previously demonstrated that baicalin (Bac) showed synergies with azithromycin (Azm) against Azm-resistant Staphylococcus saprophyticus (ARSS ...
Jinli Wang   +10 more
doaj   +1 more source

Euler equation of the optimal trajectory for the fastest magnetization reversal of nano-magnetic structures

open access: yes, 2007
Based on the modified Landau-Lifshitz-Gilbert equation for an arbitrary Stoner particle under an external magnetic field and a spin-polarized electric current, differential equations for the optimal reversal trajectory, along which the magnetization ...
C. He   +4 more
core   +1 more source

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