• Latest
  • Trending
  • All
Magnon excitation. Courtesy: Daria Sokol/MIPT Press Office

Tunable Spin Wave Excitation Achieved by Physicists

August 9, 2021
New Printable, Injectable Materials for Advanced Medical Applications

New Printable, Injectable Materials for Advanced Medical Applications

May 29, 2025
Metal fleece: material for the batteries of the future

Metal fleece: material for the batteries of the future

May 24, 2025
AI and X-ray Vision to Gain Insight into Battery Electrolyte.

AI and X-ray Vision to Gain Insight into Battery Electrolyte

May 23, 2025
Mask users can now breathe easy on two counts

Mask users can now breathe easy on two counts

May 23, 2025
Boosting Cancer Treatment.

Boosting Cancer Treatment

May 23, 2025
Emergence Quantum: a commercial quantum research 'special ops' team

Emergence Quantum: a commercial quantum research ‘special ops’ team

May 22, 2025
Sugar-coated nanotherapy dramatically improves neuron survival in Alzheimer’s model.

Sugar-coated nanotherapy improves neuron survival

May 15, 2025
Quantum simulation of chemical dynamics achieved for first time

Quantum simulation of chemical dynamics achieved for first time

May 15, 2025
The mysterious chemical world inside nanopores.

The Mysterious Chemical World Inside Nanopores

May 13, 2025
Stability solution brings unique form of carbon closer to practical application.

Stability solution brings unique form of carbon closer to practical application

May 10, 2025
It’s Hard to Get Meds to the Lungs: Breathable Algae Offers a New Path.

It’s Hard to Get Meds to the Lungs: Breathable Algae Offers a New Path

May 7, 2025
New Bayesian Method Enables Rapid Detection of Quantum Dot Charge States

New Bayesian Method Enables Rapid Detection of Quantum Dot Charge States

May 2, 2025
  • About
  • Advertise
  • Privacy Policy
  • Terms & Conditions
  • Contact
Monday, June 2, 2025
  • Login
  • Register
Nanodigest
  • Home
  • Categories
    • Biological Science & Technology
    • Chemical Science & Technology
    • Material Science & Technology
    • Physical Science & Technology
    • Innovations & Education
  • NanoDigestExclusive
    AI and X-ray Vision to Gain Insight into Battery Electrolyte.

    AI and X-ray Vision to Gain Insight into Battery Electrolyte

    Emergence Quantum: a commercial quantum research 'special ops' team

    Emergence Quantum: a commercial quantum research ‘special ops’ team

    Couple satisfaction linked to fewer cognitive issues with chemo

    Ultrasound and Cilia to Clean Implanted Stents and Catheters

    Ultrasound and Cilia to Clean Implanted Stents and Catheters

    Celebrating Science

    Nobel prize for a New Way in Cancer Treatment

    Nobel prize for New Way in Cancer Treatment

    Simple to use device. Nano Digest.

    Simple to Use Device

    Nanofoam: Breakthrough in Material Design. Nano Digest.

    Nanofoam: Breakthrough in Material Design

    The Future of Solar Energy. Nano Digest.

    The Future of Solar Energy

    Trending Tags

    • 2D nanospace
    • 3D nano structures
    • Bacterial magnetic nanoparticle
    • Creation of nano technology
    • nano particles
    • Nano Technology
    • Nano Tv
    • nanomaterials
    • nanoparticles
    • Nanosciences
    • nanotubes
    • Nanowire
  • Nano TvYouTube
    Nanotechnology in Engineering – NANOENGINEERING | Nano Tv

    Nanotechnology in Engineering – NANOENGINEERING | Nano Tv

    nanotechnology, materials, graphene, nano digest, NanoTV

    Nanotechnology in Materials – GRAPHENE | Nano Tv

    Nanotechnology in Electronics - NANOELECTRONICS | Nano Tv, Nano Digest

    Nanotechnology in Electronics-NANOELECTRONICS | Nano Tv

    Nanotechnology in Medicine - NANOMEDICINE, Nano Tv, nano digest

    Nanotechnology in Medicine-NANOMEDICINE | Nano Tv

    Molecular Nanotechnology-NANOTECHNOLOGY & IMPLEMENTATIONS | Nano Tv, It deals with engineering nanoscale machines that operate on the molecular scale distinct from other areas of nanotechnology, such as nanoscale materials, nano digest

    Molecular Nanotechnology-NANOTECHNOLOGY & IMPLEMENTATIONS | Nano Tv

    What are Nanoparticles?, nano digest

    What are NANOPARTICLES?: Nano Tv

    THE ORIGIN & CHALLENGE by Richard Feynman | Nano Tv

    THE ORIGIN & CHALLENGE by Richard Feynman: Nano Tv

    Introduction, NANOTECHNOLOGY, nano digest, Nano Tv

    Introduction to NANOTECHNOLOGY | Nano Tv

  • ShopSale
No Result
View All Result
Nanodigest
No Result
View All Result
Home Physical Science & Technology

Tunable Spin Wave Excitation Achieved by Physicists

by Nano Digest
August 9, 2021
in Physical Science & Technology
0
Magnon excitation. Courtesy: Daria Sokol/MIPT Press Office
491
SHARES
1.4k
VIEWS
Share on FacebookShare on TwitterShare on Whatsapp

Physicists from MIPT and the Russian Quantum Center, joined by colleagues from Saratov State University and Michigan Technological University, have demonstrated new methods for controlling spin waves in nanostructured bismuth iron garnet films via short laser pulses. Presented in Nano Letters, the solution has potential for applications in energy-efficient information transfer and spin-based quantum computing.

A particle’s spin is its intrinsic angular momentum, which always has a direction. In magnetized materials, the spins all point in one direction. A local disruption of this magnetic order is accompanied by the propagation of spin waves, whose quanta are known as magnons.

Unlike the electrical current, spin wave propagation does not involve a transfer of matter. As a result, using magnons rather than electrons to transmit information leads to much smaller thermal losses. Data can be encoded in the phase or amplitude of a spin wave and processed via wave interference or nonlinear effects.

Simple logical components based on magnons are already available as sample devices. However, one of the challenges of implementing this new technology is the need to control certain spin wave parameters. In many regards, exciting magnons optically is more convenient than by other means, with one of the advantages presented in the recent paper in Nano Letters.

The researchers excited spin waves in a nanostructured bismuth iron garnet. Even without nanopatterning, that material has unique optomagnetic properties. It is characterized by low magnetic attenuation, allowing magnons to propagate over large distances even at room temperature. It is also highly optically transparent in the near infrared range and has a high Verdet constant.

The film used in the study had an elaborate structure: a smooth lower layer with a one-dimensional grating formed on top, with a 450-nanometer period (fig. 1). This geometry enables the excitation of magnons with a very specific spin distribution, which is not possible for an unmodified film.

To excite magnetization precession, the team used linearly polarized pump laser pulses, whose characteristics affected spin dynamics and the type of spin waves generated. Importantly, wave excitation resulted from optomagnetic rather than thermal effects.

The researchers relied on 250-femtosecond probe pulses to track the state of the sample and extract spin wave characteristics. A probe pulse can be directed to any point on the sample with a desired delay relative to the pump pulse. This yields information about the magnetization dynamics in a given point, which can be processed to determine the spin wave’s spectral frequency, type, and other parameters.

Unlike the previously available methods, the new approach enables controlling the generated wave by varying several parameters of the laser pulse that excites it. In addition to that, the geometry of the nanostructured film allows the excitation center to be localized in a spot about 10 nanometers in size. The nanopattern also makes it possible to generate multiple distinct types of spin waves. The angle of incidence, the wavelength and polarization of the laser pulses enable the resonant excitation of the waveguide modes of the sample, which are determined by the nanostructure characteristics, so the type of spin waves excited can be controlled. It is possible for each of the characteristics associated with optical excitation to be varied independently to produce the desired effect.

“Nanophotonics opens up new possibilities in the area of ultrafast magnetism, said the study’s co-author, Alexander Chernov, who heads the Magnetic Heterostructures and Spintronics Lab at MIPT.  The creation of practical applications will depend on being able to go beyond the submicrometer scale, increasing operation speed and the capacity for multitasking. We have shown a way to overcome these limitations by nanostructuring a magnetic material. We have successfully localized light in a spot few tens of nanometers across and effectively excited standing spin waves of various orders. This type of spin waves enables the devices operating at high frequencies, up to the terahertz range.

The paper experimentally demonstrates an improved launch efficiency and ability to control spin dynamics under optical excitation by short laser pulses in a specially designed nanopatterned film of bismuth iron garnet. It opens up new prospects for magnetic data processing and quantum computing based on coherent spin oscillations.

Share196Tweet123Send
Nano Digest

Nano Digest

  • Trending
  • Comments
  • Latest

Nanotechnology in Cancer

September 10, 2020
Emergence of 2.5D Materials for Futuristic Applications

Emergence of 2.5D Materials for Futuristic Applications

June 29, 2022
New research methods developed for nano and quantum materials. Nano Digest.

New research methods developed for nano and quantum materials

February 24, 2023
Designing Gas detecting devices using nanomaterials. Nano Digest.

Designing Gas detecting devices using nanomaterials

2
3D Printing Allows Precise Light Control for Color Composition. nano Digest.

3D Printing Allows Precise Light Control for Color Composition

2

Wearable sensor monitors health, administers drugs using saliva and tears

1
New Printable, Injectable Materials for Advanced Medical Applications

New Printable, Injectable Materials for Advanced Medical Applications

May 29, 2025
Metal fleece: material for the batteries of the future

Metal fleece: material for the batteries of the future

May 24, 2025
AI and X-ray Vision to Gain Insight into Battery Electrolyte.

AI and X-ray Vision to Gain Insight into Battery Electrolyte

May 23, 2025
Nanodigest

Copyright © 2009-2022 NanoDigest.in

Navigate Site

  • About
  • Advertise
  • Privacy Policy
  • Terms & Conditions
  • Contact

Follow Us

No Result
View All Result
  • Home
  • Biological Science & Technology
  • Chemical Science & Technology
  • Material Science & Technology
  • Physical Science & Technology
  • Innovations & Education
  • NanoDigest Exclusive
  • Nano Tv
  • —————————–
  • About
  • Advertise
  • Contact
  • Privacy Policy
  • Terms & Conditions

Copyright © 2009-2022 NanoDigest.in

Welcome Back!

Sign In with Google
OR

Login to your account below

Forgotten Password? Sign Up

Create New Account!

Sign Up with Google
OR

Fill the forms below to register

*By registering into our website, you agree to the Terms & Conditions and Privacy Policy.
All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In
We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
Cookie SettingsAccept All
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
CookieDurationDescription
cookielawinfo-checkbox-analytics11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional11 monthsThe cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy11 monthsThe cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
Functional
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytics
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
Others
Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.
SAVE & ACCEPT
This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.