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Deterministic switching of perpendicularly magnetized synthetic antiferromagnets using spin‐orbit torque (SOT) usually requires an in‐plane auxiliary magnetic field, which limits its practical applications. Here, an exchange field gradient is introduced into perpendicularly magnetized synthetic ferro‐ and antiferromagnets (SFs and SAFs) through the insertion of a slightly wedged Ru between two thin...
Field‐Free Switching
In article number 2211953, Tiejun Zhou, Wenjun Li, and co‐workers report that field‐free switching and high spin‐orbit torque efficiency are simultaneously achieved through the introduction of exchange field gradient into perpendicularly magnetized synthetic ferro‐ and antiferromagnets. The study provides new insights into field‐free switching of synthetic antiferromagnets and...
An Mach-Zehnder (M-Z) interferometer coupled with the nested fiber ring resonator is theoretically demonstrated. The results show that the dispersion sensitivity of the interferometer is significantly enhanced by the strong dispersive response of the resonator. The sensitivity of the temperature sensor based on the nested fiber ring resonator coupled M-Z interferometer can achieve 320rad/°C, about...
A highly sensitive Mach-Zehnder(M-Z) interferometer coupled with nested fiber ring resonators is theoretically demonstrated. The experimental results show that the sensitivity of the interferometer is significantly enhanced by strong dispersive response of resonators and reach its maximum value at resonance, which agree well with theoretical predictions.
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