Nanoscale Mapping of Magnetic Auto-Oscillations with a Single Spin Sensor

被引：0

作者：

Hache, Toni ^{[1
,2
,3
]}

Anshu, Anshu ^{[1
]}

Shalomayeva, Tetyana ^{[2
,3
]}

Richter, Gunther ^{[4
]}

Stoehr, Rainer ^{[2
,3
]}

Kern, Klaus ^{[1
,5
]}

Wrachtrup, Joerg ^{[1
,2
,3
,6
]}

Singha, Aparajita ^{[1
,6
,7
,8
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Inst Phys 3, D-70049 Stuttgart, Germany

[3] Univ Stuttgart, Res Ctr SCoPE, D-70049 Stuttgart, Germany

[4] Max Planck Inst Intelligent Syst, D-70569 Stuttgart, Germany

[5] Ecole Polytech Federale Lausanne, Inst Phys, CH-1015 Lausanne, Switzerland

[6] Univ Stuttgart, Ctr Integrated Quantum Sci & Technol IQST, D-70049 Stuttgart, Germany

[7] Tech Univ Dresden, Inst Solid State & Mat Phys, D-01069 Dresden, Germany

[8] Wurzburg Dresden Cluster Excellence, D-01069 Dresden, Germany

来源：

NANO LETTERS | 2025年 / 25卷 / 05期

关键词：

PL map; auto-oscillation; spin Hall effects; nitrogen-vancancy center; nano-oscillator; nonlinear oscillator; DRIVEN; MAGNETOMETRY;

D O I：

10.1021/acs.nanolett.4c05531

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Spin Hall nano-oscillators convert DC to magnetic auto-oscillations in the microwave regime. Current research on these devices is dedicated to creating next-generation energy-efficient hardware for communication technologies. Despite intensive research on magnetic auto-oscillations within the past decade, the nanoscale mapping of those dynamics remained a challenge. We image the distribution of free-running magnetic auto-oscillations by driving the electron spin resonance transition of a single spin quantum sensor, enabling fast acquisition (100 ms/pixel). With quantitative magnetometry, we experimentally demonstrate for the first time that the auto-oscillation spots are localized at magnetic field minima acting as local potential wells for confining spin-waves. By comparing the magnitudes of the magnetic stray field at these spots, we decipher the different frequencies of the auto-oscillation modes. The insights gained regarding the interaction between auto-oscillation modes and spin-wave potential wells enable advanced engineering of real devices.

引用

页码：1917 / 1924

页数：8

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