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柳天宇 教师名称：柳天宇 教师拼音名称：LIU Tianyu 性别：女 学科：Condensed Matter Physics 职称：教授 其他联系方式 邮编：300354 通讯/办公地址：Room 308 Bldg. 32, Department of Physics, Tianjin University Beiyangyuan Campus, Tianjin 300354, China 邮箱：tianyu_liu@tju.edu.cn 基本信息 研究方向 获奖情况 论文成果 I am a theoretcial condensed matter physisist woking on spin-wave spintronics. It is a newly developed area aming to use the spin degree of freedom of local spins to carry spin currents and to process information. Around spin waves or their quanta - magnons, my research goes into three directions: the electric control of spin waves, the formation and manipulation of quantum states based on spin waves, and the interactions between magnons and other particles, such as photons and phonons. The electric control of spin waves in central symmetric ferrites has been successfully predictted by our theoretical model, and has been proved by experiments recently. More work needs to be done to quantitatively understand other magnetic materials, and to systemmetically study the spin-wave quantum states and their interaction with applied fields or other particles. We always seek to collaborate with experimental groups and welcome students obsessed in quantum mechanics and material science. Open positions are available for graduate students and postdocs. Cavity optomagnonics studies the interaction between magnons and optical photons. It has the potential of application in all-optical control of magnons, and storage and processing optical quantum information in magnetic materials. The manipulation of quantum states based on spin waves is an application and generalization of the electric control of spin waves. It contains two parts: to form a spin-wave quantum state, and to apply fields (e.g. electric fields, temperature gradients, optical fields etc. ) on it. The electric control of spin waves manipulates the transport of spin waves and their quantum state with electric fields. Microscopic electronics models and first principle calculations are used to select appropriate materials. Invited talk, "Electric-Field Coupling to Spin Waves in a Centrosymmetric Ferrite" at the APS March Meeting, 03-18- 2016, Baltimore, MD, USA. Invited talk, "Electric-Field Modulation of Spin-Wave Phase in Yttrium Iron Garnet Films" on SPIE Optics and Photonics, 08-21- 2014, San Diego, CA, USA. 1. Sietsema, G., Liu, T. & Flatté, M. E. Electric-Field Control of Magnon Gaps in a Ferromagnet using a Spatially-Periodic Electric Field. SPIN 07, 1740012 (2017)..2019 2. Singh, S. et al. Strong Modulation of Spin Currents in Bilayer Graphene by Static and Fluctuating Proximity Exchange Fields. Phys. Rev. Lett. 118, (2017)..2019 3. Liu, T., Zhang, X., Tang, H. X. & Flatté, M. E. Optomagnonics in magnetic solids. Phys. Rev. B 94, 060405 (R) (2016)..2019 4. Liu, T., Vignale, G. & Flatté, M. E. Nonlocal Drag of Magnons in a Ferromagnetic Bilayer. Phys. Rev. Lett. 116, 237202 (2016)..2019 5. Zhang, X., Liu, T., Flatté, M. E. & Tang, H. X. Electric-Field Coupling to Spin Waves in a Centrosymmetric Ferrite. Phys. Rev. Lett. 113, 037202 (2014)..2019 6. Liu, T. & Vignale, G. Flexoelectric phase shifter for spin waves. Journal of Applied Physics 111, 083907-083907-6 (2012)..2019 7. Liu, T. & Vignale, G. Electric Control of Spin Currents and Spin-Wave Logic. Phys. Rev. Lett. 106, 247203 (2011)..2019 教育经历 2008.8-2013.12 University of Missouri, Columbia   Physics   PhD 2006.9-2008.7 Tianjin University   Physics   MS 2002.9-2006.7 Tianjin University   Applied Physics   BS 工作经历 2016.12 -2019.12 |Department of Physics|Tianjin University|Professor 2013.7 -2016.7 |Department of Physics and Astronomy|University of Iowa|Postdotoral research scholar