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Li K, Wang L, Wang Y, Guo Y, Lv S, He Y, Lin W, Min T, Hu S, Yang S, Xue D, Zheng A, Yang S, Ding X. Electric Field Switching of Magnon Spin Current in a Compensated Ferrimagnet. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312137. [PMID: 38350009 DOI: 10.1002/adma.202312137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/25/2024] [Indexed: 02/15/2024]
Abstract
Manipulation of directional magnon propagation, known as magnon spin current, is essential for developing magnonic devices featuring nonvolatile functionalities and ultralow power consumption. Magnon spin current can usually be modulated by magnetic field or current-induced spin torques. However, these approaches may lead to energy dissipation due to Joule heating. Electric-field switching of magnon spin current without charge current is highly preferred but challenging to realize. By integrating magnonic and piezoelectric materials, the manipulation of the magnon spin current generated by the spin Seebeck effect in the ferrimagnetic insulator Gd3Fe5O12 (GdIG) film on a piezoelectric substrate is demonstrated. Reversible electric-field switching of magnon polarization without applied charge current is observed. Through strain-mediated magnetoelectric coupling, the electric field induces the magnetic compensation transition between two magnetic states of the GdIG, resulting in its magnetization reversal and the simultaneous switching of magnon spin current. This work establishes a prototype material platform that paves the way for developing magnon logic devices characterized by all electric field reading and writing and reveals the underlying physics principles of their functions.
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Affiliation(s)
- Kaili Li
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Lei Wang
- Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing, 211189, China
| | - Yu Wang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yuanjun Guo
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Shuping Lv
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yuewei He
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Weiwei Lin
- Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing, 211189, China
| | - Tai Min
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Shaojie Hu
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Sen Yang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Dezhen Xue
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Aqun Zheng
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Shuming Yang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xiangdong Ding
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
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Das A, Mrinalini M, Usami T, Pati SP, Taniyama T, Gorige V. Electric and Magnetic Tuning of Gilbert Damping Constant in LSMO/PMN-PT(011) Heterostructure. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:285801. [PMID: 37044113 DOI: 10.1088/1361-648x/accc66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Electric field control of magnetodynamics in magnetoelectric (ME) heterostructures has
been the subject of recent interest due to its fundamental complexity and promising applications in
room temperature devices. The present work focuses on the tuning of magnetodynamic parameters
of epitaxially grown ferromagnetic (FM) La0.7Sr0.3MnO3(LSMO) on a ferro(piezo)electric (FE)
Pb(Mg0.33Nb0.67)O3-PbTiO3(PMN-PT) single crystal substrate. The uniaxial magnetic anisotropy
of LSMO on PMN-PT confirms the ME coupling at the FM/FE heterointerface. The magnitude of
the Gilbert damping constant (α) of this uniaxial LSMO film measured along the hard magnetic axis
is significantly small compared to the easy axis. Furthermore, a marked decrease in the α values of
LSMO at positive and negative electrical remanence of PMN-PT is observed, which is interpreted
in the framework of strain induced spin dependent electronic structure. The present results clearly
encourage the prospects of electric field controlled magnetodynamics, thereby realising the room
temperature spin-wave based device applications with ultra-low power consumption.
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Affiliation(s)
- Avisek Das
- School of Physics, University of Hyderabad, Gachibowli, Hyderabad 500046, India, Hyderabad, Telangana, 500046, INDIA
| | - Mrinalini Mrinalini
- School of Physics, University of Hyderabad, Gachibowli, Hyderabad 500046, India, Hyderabad, Telangana, 500046, INDIA
| | - Takamasa Usami
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan, Nagoya, Aichi, 464-8601, JAPAN
| | - Satya Prakash Pati
- Department of Physics, Nagoya University, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan, Nagoya, 464-8601, JAPAN
| | - Tomoyasu Taniyama
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, JAPAN
| | - Venkataiah Gorige
- School of Physics, University of Hyderabad, University of Hyderabad, Prof C R Rao Road, Gachibowli, Hyderabad, Telangana, 500046, INDIA
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Strain-Tuned Spin-Wave Interference in Micro- and Nanoscale Magnonic Interferometers. NANOMATERIALS 2022; 12:nano12091520. [PMID: 35564228 PMCID: PMC9101432 DOI: 10.3390/nano12091520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 11/27/2022]
Abstract
Here, we report on the experimental study of spin-wave propagation and interaction in the double-branched Mach–Zehnder interferometer (MZI) scheme. We show that the use of a piezoelectric plate (PP) with separated electrodes connected to each branch of the MZI leads to the tunable interference of the spin-wave signal at the output section. Using a finite element method, we carry out a physical investigation of the mechanisms of the impact of distributed deformations on the magnetic properties of YIG film. Micromagnetic simulations and finite-element modelling can explain the evolution of spin-wave interference patterns under strain induced via the application of an electric field to PP electrodes. We show how the multimode regime of spin-wave propagation is used in the interferometry scheme and how scaling to the nanometer size represents an important step towards a single-mode regime. Our findings provide a simple solution for the creation of tunable spin-wave interferometers for the magnonic logic paradigm.
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