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Layered van der Waals (vdW) magnets can maintain a magnetic order even down to the single-layer regime and hold promise for integrated spintronic devices. While the magnetic ground state of vdW magnets was extensively studied, key…

Propagation character of spin wave was investigated for chiral magnets FeGe and Co-Zn-Mn alloys, which can host magnetic skyrmions near room temperature. On the basis of the frequency shift between counter-propagating spin waves, the…

Materials Science · Physics 2017-06-21 R. Takagi , D. Morikawa , K. Karube , N. Kanazawa , K. Shibata , G. Tatara , Y. Tokunaga , T. Arima , Y. Taguchi , Y. Tokura , S. Seki

We propose a simple model quantum network consisting of diamond-shaped plaquettes with deterministic distribution of magnetic and non-magnetic atoms in presence of a uniform external magnetic flux in each plaquette and predict that such a…

Mesoscale and Nanoscale Physics · Physics 2016-09-08 Biplab Pal , Paramita Dutta

Spin waves, known for their ability to propagate without the involvement of moving charges, hold immense promise for on-chip information transfer and processing, offering a path toward post-CMOS computing technologies. This study…

We study the parametric interaction between a single Nitrogen-Vacancy electronic spin and a diamond mechanical resonator in which the spin is embedded. Coupling between spin and oscillator is achieved by crystal strain, which is generated…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Jean Teissier , Arne Barfuss , Patrick Maletinsky

Electron spins are amongst the most coherent solid-state systems known, however, to be used in devices for quantum sensing and information processing applications, they must be typically placed near interfaces. Understanding and mitigating…

Yttrium iron garnet (YIG) is a magnetic insulator with record-low damping, allowing spin-wave transport over macroscopic distances. Doping YIG with gallium ions greatly reduces the demagnetizing field and introduces a perpendicular magnetic…

Mesoscale and Nanoscale Physics · Physics 2021-11-25 Joris J. Carmiggelt , Olaf C. Dreijer , Carsten Dubs , Oleksii Surzhenko , Toeno van der Sar

We consider an antiferromagnetic insulator that is in contact with a metal. Spin accumulation in the metal can induce spin-transfer torques on the staggered field and on the magnetization in the antiferromagnet. These torques relate to spin…

Mesoscale and Nanoscale Physics · Physics 2018-02-14 Sverre A. Gulbrandsen , Arne Brataas

Spin waves, collective dynamic magnetic excitations, offer crucial insights into magnetic material properties. Rare-earth iron garnets offer an ideal spin-wave (SW) platform with long propagation length, short wavelength, gigahertz…

Mesoscale and Nanoscale Physics · Physics 2023-12-13 Rupak Timalsina , Haohan Wang , Bharat Giri , Adam Erickson , Xiaoshan Xu , Abdelghani Laraoui

Spin waves are the low-energy excitations of magnetically ordered materials. They are key elements in the stability analysis of the ordered phase and have a wealth of technological applications. Recently, we showed that spin waves of a…

Mesoscale and Nanoscale Physics · Physics 2020-01-08 Chenglong Jia , Decheng Ma , Alexander F. Schäffer , Jamal Berakdar

Magnetic resonance techniques provide a powerful tool for controlling spin systems, with applications ranging from quantum information processing to medical imaging. Nevertheless, the behavior of a spin system under strong excitation…

Quantum Physics · Physics 2015-05-19 Lilian Childress , Jean McIntyre

We characterize spin wave propagation and its modification by an electrical current in Permalloy(Py)/Pt bilayers with Py thickness between 4 and 20 nm. First, we analyze the frequency non-reciprocity of surface spin waves and extract from…

Materials Science · Physics 2020-01-15 O. Gladii , M. Collet , Y. Henry , J. -V. Kim , A. Anane , M. Bailleul

The emerging field of quantum acoustics explores interactions between acoustic waves and artificial atoms and their applications in quantum information processing. In this experimental study, we demonstrate the coupling between a surface…

Quantum Physics · Physics 2016-12-28 D. Andrew Golter , Thein Oo , Mayra Amezcua , Ignas Lekavicius , Kevin A. Stewart , Hailin Wang

Group-IV color centers in diamond are promising candidates for quantum networks due to their dominant zero-phonon line and symmetry-protected optical transitions that connect to coherent spin levels. The negatively charged tin-vacancy (SnV)…

We report on surface and bulk spin density measurements of diamond, using ultra-sensitive magnetic force microscopy with magnetic field gradients up to 0.5 T/$\mu$m. At temperatures between 25 and 800 mK, we measure the shifts in the…

Mesoscale and Nanoscale Physics · Physics 2019-01-11 Martin de Wit , Gesa Welker , Marc de Voogd , Tjerk Oosterkamp

We study the dynamics of spin valves consisting of two layers of magnetic insulators separated by a normal metal in the macrospin model. A current through the spacer generates a spin Hall current that can actuate the magnetization via the…

Mesoscale and Nanoscale Physics · Physics 2014-08-19 Hans Skarsvåg , Gerrit E. W. Bauer , Arne Brataas

Understanding the profile of a qubit's wavefunction is key to its quantum applications. Unlike conducting systems, where a scanning tunneling microscope can be used to probe the electron distribution, there is no direct method for…

Spin waves in antiferromagnetic materials have great potential for next-generation magnonic technologies. However, their properties and their dependence on the type of ground-state antiferromagnetic structure are still open questions. Here,…

Mesoscale and Nanoscale Physics · Physics 2020-10-07 Flaviano José dos Santos , Manuel dos Santos Dias , Samir Lounis

We report on the noise spectrum experienced by few nanometer deep nitrogen-vacancy centers in diamond as a function of depth, surface coating, magnetic field and temperature. Analysis reveals a double-Lorentzian noise spectra consistent…

Magnetization dynamics in nanomagnets has attracted broad interest since it was predicted that a dc-current flowing through a thin magnetic layer can create spin-wave excitations. These excitations are due to spin-momentum transfer, a…

Mesoscale and Nanoscale Physics · Physics 2012-06-25 F. Macià , A. D. Kent , F. C. Hoppensteadt