Low-damping ferromagnetic resonance in electron-beam patterned, high-Q vanadium tetracyanoethylene magnon cavities

Andrew Franson; Na Zhu; Seth Kurfman; Michael Chilcote; Denis R. Candido; Kristen S. Buchanan; Michael E. Flatté; Hong X. Tang; Ezekiel Johnston-Halperin

doi:10.1117/12.2569994

20 August 2020 Low-damping ferromagnetic resonance in electron-beam patterned, high-Q vanadium tetracyanoethylene magnon cavities

Andrew Franson, Na Zhu, Seth Kurfman, Michael Chilcote, Denis R. Candido, Kristen S. Buchanan, Michael E. Flatté, Hong X. Tang, Ezekiel Johnston-Halperin

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Proceedings Volume 11470, Spintronics XIII; 114703I (2020) https://doi.org/10.1117/12.2569994
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

The study of quantum coherent magnonic interactions relies on the ability to excite and exploit long lived spin wave excitations. That requirement has for many years placed yittrium iron garnet (YIG) as the leader in high-Q, low-loss magnetic resonance and coherent magnetic phenomena. High-quality YIG, however, is difficult to incorporate on-chip. The organic-based ferrimagnet vanadium tetracyanoethylene (V[TCNE]x) has recently emerged as an alternative to YIG due to its extremely low-loss (α = 3.98 × 10^-5). Here we fill the low-loss on-chip material gap by presenting the semiconductor-compatible deposition, patterning, and characterization of V[TCNE]x thin films with lateral dimensions from microns to millimeters as well as a strong magnetic response to temperature and strain in V[TCNE]x. This work establishes the versatility of V[TCNE]x for on-chip applications requiring highly coherent magnetic excitations ranging from microwave communication to quantum information.

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Andrew Franson, Na Zhu, Seth Kurfman, Michael Chilcote, Denis R. Candido, Kristen S. Buchanan, Michael E. Flatté, Hong X. Tang, and Ezekiel Johnston-Halperin "Low-damping ferromagnetic resonance in electron-beam patterned, high-Q vanadium tetracyanoethylene magnon cavities", Proc. SPIE 11470, Spintronics XIII, 114703I (20 August 2020); https://doi.org/10.1117/12.2569994

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KEYWORDS

Magnetism

Vanadium

Ferromagnetics

Magnons

Optical lithography

Quantum communications

Quantum information

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