Related Experiment Video
Updated: Apr 26, 2026
12:19
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
7.9K
Spectrum gaps of spin waves generated by interference in a uniform nanostripe waveguide
Qi Wang1, Huaiwu Zhang1, Guokun Ma1
1State key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China.
Scientific Reports
|August 2, 2014
Summary
Researchers controlled spin wave spectrum gaps using interference, not Bragg reflection. Modulating excitation sources precisely tunes these gaps for advanced spin wave devices.
Area of Science:
- Condensed Matter Physics
- Magnonics
- Nanoscale Science
Background:
- Spin waves are fundamental to magnonics and spintronics.
- Controlling spin wave propagation is crucial for device applications.
- Traditional methods for creating spectrum gaps often rely on periodic structures (Bragg reflection).
Purpose of the Study:
- To investigate the excitation of spin waves using multiple sources in uniform nanostructures.
- To explore the formation of spectrum gaps through spin wave interference.
- To demonstrate a novel method for controlling spectrum gaps by manipulating excitation sources.
Main Methods:
- Utilized micromagnetic simulations to model spin wave dynamics.
- Performed analytical calculations to support simulation results.
- Investigated spin wave interference in uniform nanostripe waveguides.
Main Results:
- Observed distinct spectrum gaps formed by spin wave interference, distinct from Bragg reflection.
- Demonstrated that the number and frequency of spectrum gaps are controllable.
- Showed that modulation of excitation source distance, number, and width effectively tunes spectrum gaps.
Conclusions:
- Spin wave interference offers a new mechanism for creating controllable spectrum gaps.
- The ability to tune spectrum gaps by adjusting excitation sources is a significant advancement.
- This research provides a promising pathway for developing novel spin wave-based devices.
Related Concept Videos
02:18Interference and Diffraction
28.6K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
28.6K
01:28Standing Waves in a Cavity
1.7K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.7K
01:02¹H NMR: Interpreting Distorted and Overlapping Signals
1.3K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.3K
01:07Propagation of Waves
2.5K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
2.5K
01:07Interference and Superposition of Waves
5.8K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
5.8K
02:32The de Broglie Wavelength
25.6K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
25.6K