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   https://doi.org/10.1103/PhysRevB.100.161110  

   Tao, L. L.; Tsymbal, Evgeny Y. (October 2019, Physical Review B)
2. Spin disorder control of topological spin texture

   https://doi.org/10.1038/s41467-024-47715-5  

   Zhang, Hongrui; Shao, Yu-Tsun; Chen, Xiang; Zhang, Binhua; Wang, Tianye; Meng, Fanhao; Xu, Kun; Meisenheimer, Peter; Chen, Xianzhe; Huang, Xiaoxi; et al (December 2024, Nature Communications)

   Abstract Stabilization of topological spin textures in layered magnets has the potential to drive the development of advanced low-dimensional spintronics devices. However, achieving reliable and flexible manipulation of the topological spin textures beyond skyrmion in a two-dimensional magnet system remains challenging. Here, we demonstrate the introduction of magnetic iron atoms between the van der Waals gap of a layered magnet, Fe₃GaTe₂, to modify local anisotropic magnetic interactions. Consequently, we present direct observations of the order-disorder skyrmion lattices transition. In addition, non-trivial topological solitons, such as skyrmioniums and skyrmion bags, are realized at room temperature. Our work highlights the influence of random spin control of non-trivial topological spin textures. 

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3. Spin squeezing of macroscopic nuclear spin ensembles

   https://doi.org/10.1103/PhysRevD.111.052004  

   Boyers, Eric; Goldstein, Garry; Sushkov, Alexander O (March 2025, Physical Review D)

   Spin squeezing has been explored in atomic systems as a tool for quantum sensing, improving experimental sensitivity beyond the spin standard quantum limit for certain measurements. To optimize absolute metrological sensitivity, it is beneficial to consider macroscopic spin ensembles, such as nuclear spins in solids and liquids. Coupling a macroscopic spin ensemble to a parametrically-modulated resonant circuit can create collective spin squeezing by generating spin correlations mediated by the circuit. We analyze the squeezing dynamics in the presence of decoherence and finite spin polarization, showing that achieving 7 dB spin squeezing is feasible in several nuclear spin systems. The metrological benefit of squeezing a macroscopic spin ensemble lies in the suppression of technical noise sources in the spin detection system relative to the spin projection noise. This expands the experimental sensitivity bandwidth when searching for signals of unknown frequency and can improve the resonant signal-to-noise ratio. Squeezing macroscopic spin ensembles may prove to be a useful technique for fundamental physics experiments aimed at detecting spin interactions with oscillating background fields, such as ultralight dark matter. 

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4. Spin Rectification and Electrically Controlled Spin Transport in Molecular-Ferroelectrics-Based Spin Valves

   https://doi.org/10.1103/PhysRevApplied.13.064011  

   Yin, Yuewei; Jiang, Xuanyuan; Koten, Mark A.; Shield, Jeffrey E.; Chen, Xuegang; Yun, Yu; N’Diaye, Alpha T.; Hong, Xia; Xu, Xiaoshan (June 2020, Physical Review Applied)
5. Collective Spin-Light and Light-Mediated Spin-Spin Interactions in an Optical Cavity

   https://doi.org/10.1103/PRXQuantum.3.020308  

   Li, Zeyang; Braverman, Boris; Colombo, Simone; Shu, Chi; Kawasaki, Akio; Adiyatullin, Albert F.; Pedrozo-Peñafiel, Edwin; Mendez, Enrique; Vuletić, Vladan (April 2022, PRX Quantum)