Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor

Eric Lee-Wong; Ruolan Xue; Feiyang Ye; Andreas Kreisel; Toeno van der Sar; Amir Yacoby; Chunhui Rita Du

doi:10.1021/acs.nanolett.0c00085

Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor

Eric Lee-Wong, Ruolan Xue, Feiyang Ye, Andreas Kreisel, Toeno van der Sar, Amir Yacoby, Chunhui Rita Du

QN/vanderSarlab

Research output: Contribution to journal › Article › Scientific › peer-review

49 Citations (Scopus)

Abstract

We report the optical detection of magnons with a broad range of wavevectors in magnetic insulator Y ₃Fe ₅O ₁₂ thin films by proximate nitrogen-vacancy (NV) single-spin sensors. Through multimagnon scattering processes, the excited magnons generate fluctuating magnetic fields at the NV electron spin resonance frequencies, which accelerate the relaxation of NV spins. By measuring the variation of the emitted spin-dependent photoluminescence of the NV centers, magnons with variable wavevectors up to &tild;5× 10 ⁷ m ^-1 can be optically accessed, providing an alternative perspective to reveal the underlying spin behaviors in magnetic systems. Our results highlight the significant opportunities offered by NV single-spin quantum sensors in exploring nanoscale spin dynamics of emergent spintronic materials.

Original language	English
Pages (from-to)	3284-3290
Number of pages	7
Journal	Nano Letters
Volume	20
Issue number	5
DOIs	https://doi.org/10.1021/acs.nanolett.0c00085
Publication status	Published - 2020

Keywords

Magnetic insulators
Nitrogen vacancy magnetometry
Quantum sensing
Spin waves

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10.1021/acs.nanolett.0c00085

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title = "Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor",

abstract = "We report the optical detection of magnons with a broad range of wavevectors in magnetic insulator Y 3Fe 5O 12 thin films by proximate nitrogen-vacancy (NV) single-spin sensors. Through multimagnon scattering processes, the excited magnons generate fluctuating magnetic fields at the NV electron spin resonance frequencies, which accelerate the relaxation of NV spins. By measuring the variation of the emitted spin-dependent photoluminescence of the NV centers, magnons with variable wavevectors up to &tild;5× 10 7 m -1 can be optically accessed, providing an alternative perspective to reveal the underlying spin behaviors in magnetic systems. Our results highlight the significant opportunities offered by NV single-spin quantum sensors in exploring nanoscale spin dynamics of emergent spintronic materials. ",

keywords = "Magnetic insulators, Nitrogen vacancy magnetometry, Quantum sensing, Spin waves",

author = "Eric Lee-Wong and Ruolan Xue and Feiyang Ye and Andreas Kreisel and {van der Sar}, Toeno and Amir Yacoby and Du, {Chunhui Rita}",

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language = "English",

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T1 - Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor

AU - Lee-Wong, Eric

AU - Xue, Ruolan

AU - Ye, Feiyang

AU - Kreisel, Andreas

AU - van der Sar, Toeno

AU - Yacoby, Amir

AU - Du, Chunhui Rita

PY - 2020

Y1 - 2020

N2 - We report the optical detection of magnons with a broad range of wavevectors in magnetic insulator Y 3Fe 5O 12 thin films by proximate nitrogen-vacancy (NV) single-spin sensors. Through multimagnon scattering processes, the excited magnons generate fluctuating magnetic fields at the NV electron spin resonance frequencies, which accelerate the relaxation of NV spins. By measuring the variation of the emitted spin-dependent photoluminescence of the NV centers, magnons with variable wavevectors up to &tild;5× 10 7 m -1 can be optically accessed, providing an alternative perspective to reveal the underlying spin behaviors in magnetic systems. Our results highlight the significant opportunities offered by NV single-spin quantum sensors in exploring nanoscale spin dynamics of emergent spintronic materials.

AB - We report the optical detection of magnons with a broad range of wavevectors in magnetic insulator Y 3Fe 5O 12 thin films by proximate nitrogen-vacancy (NV) single-spin sensors. Through multimagnon scattering processes, the excited magnons generate fluctuating magnetic fields at the NV electron spin resonance frequencies, which accelerate the relaxation of NV spins. By measuring the variation of the emitted spin-dependent photoluminescence of the NV centers, magnons with variable wavevectors up to &tild;5× 10 7 m -1 can be optically accessed, providing an alternative perspective to reveal the underlying spin behaviors in magnetic systems. Our results highlight the significant opportunities offered by NV single-spin quantum sensors in exploring nanoscale spin dynamics of emergent spintronic materials.

KW - Magnetic insulators

KW - Nitrogen vacancy magnetometry

KW - Quantum sensing

KW - Spin waves

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JO - Nano Letters

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Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor

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