TY - GEN
T1 - Frequency Demultiplexing of Spin Waves by Inverse-designed Magnetization Patterns, Experimentally Realized by FIB Irradiation
AU - Kiechle, Martina
AU - Papp, Adam
AU - Maucha, Levente
AU - Mendisch, Simon
AU - Greil, Johannes
AU - Ahrens, Valentin
AU - Csaba, Gyorgy
AU - Becherer, Markus
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - We present the spatial separation of spin waves with distinct wavelengths when traveling through machine-learned magnetization landscapes, which can be used to demultiplex the corresponding excitation frequencies. Focused ion beam irradiation is used to modify the magnetization of YIG locally, and the maximum achievable magnetization change is used as a training basis to generate a binary 2D magnetization profile. The pattern is created with an inverse design approach using a micromagnetic solver embedded in the PyTorch framework. Subsequently, the magnetization pattern is experimentally realized using the corresponding FIB dose and its performance is demonstrated using time-resolved MOKE microscopy.
AB - We present the spatial separation of spin waves with distinct wavelengths when traveling through machine-learned magnetization landscapes, which can be used to demultiplex the corresponding excitation frequencies. Focused ion beam irradiation is used to modify the magnetization of YIG locally, and the maximum achievable magnetization change is used as a training basis to generate a binary 2D magnetization profile. The pattern is created with an inverse design approach using a micromagnetic solver embedded in the PyTorch framework. Subsequently, the magnetization pattern is experimentally realized using the corresponding FIB dose and its performance is demonstrated using time-resolved MOKE microscopy.
KW - frequency demultiplexing
KW - inverse-design magnonics
KW - machine learning
KW - spin waves
UR - http://www.scopus.com/inward/record.url?scp=85172731380&partnerID=8YFLogxK
U2 - 10.1109/INTERMAGShortPapers58606.2023.10228235
DO - 10.1109/INTERMAGShortPapers58606.2023.10228235
M3 - Conference contribution
AN - SCOPUS:85172731380
T3 - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
BT - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023
Y2 - 15 May 2023 through 19 May 2023
ER -