Observation and control of magnetic order dynamics by terahertz magnetic nearfield / Takayuki Kurihara.
2021
QC762 .K87 2021
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Title
Observation and control of magnetic order dynamics by terahertz magnetic nearfield / Takayuki Kurihara.
Author
Kurihara, Takayuki, author.
ISBN
9789811687938 (electronic bk.)
9811687935 (electronic bk.)
9789811687921
9811687935 (electronic bk.)
9789811687921
Published
Singapore : Springer, [2021]
Copyright
©2021
Language
English
Description
1 online resource (xiii, 113 pages) : illustrations (chiefly color).
Other Standard Identifiers
10.1007/978-981-16-8793-8 doi
Call Number
QC762 .K87 2021
Dewey Decimal Classification
538/.3
Summary
This book explicates the optical controls of antiferromagnetic spins by intense terahertz (THz) electromagnetic waves. The book comprises two key components: (1) the experimental demonstration of the enhancement of a THz magnetic field using a split-ring resonator (SRR) and (2) the control of the direction of magnetization by using the enhanced THz magnetic field to break the symmetry of optically-induced phase transition. These make up the first step leading to future spintronics devices. In the beginning of the book, the author reviews the basics of the ultrafast laser and nonlinear optical techniques as well as the previously achieved experiments to control spin dynamics by THz magnetic fields. In this context, a new experimental protocol is described, in which electron spins in a ferromagnetic material are redirected at the unprecedented level in cooperation with the enhanced THz magnetic field. Subsequently, the author demonstrates that the THz magnetic field is significantly amplified as a nearfield around the SRR structured metamaterial, which is implemented by measuring spin precession in a solid. At the end, the author presents the key experiment in which the amplified THz magnetic nearfield is applied to the weak ferromagnet ErFeO3 along with the femtosecond near-infrared pulse, demonstrating the successful control of symmetry breaking of the spin system due to coherent control of the optically-induced spin reorientation phase transition pathways. The comprehensive introductory review in this book allows readers to overview state-of-the-art terahertz spectroscopic techniques. In addition, the skillful description of the experiments is highly informative for readers in ultrafast magnonics, ultrafast optics, terahertz technology and plasmonic science.
Note
"Doctoral thesis accepted by The University of Tokyo, Tokyo, Japan."
Bibliography, etc. Note
Includes bibliographical references.
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Access limited to authorized users.
Digital File Characteristics
text file PDF
Source of Description
Online resource; title from PDF title page (SpringerLink, viewed January 11, 2022).
Series
Springer theses. 2190-5061
Available in Other Form
Print version: 9789811687921
Print version: 9789811687945
Print version: 9789811687952
Print version: 9789811687945
Print version: 9789811687952
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Table of Contents
Introduction
Technical Background
Resonant Enhancement of Spin Precession by SRR-Induced Magnetic Nearfields and Interactive Energy Transfer
Control of Macroscopic Magnetic Order Dynamics Using SRR-Enhanced THz Magnetic Fields
Numerical Simulation of the Macroscopic Domain Formation
Conclusion.
Technical Background
Resonant Enhancement of Spin Precession by SRR-Induced Magnetic Nearfields and Interactive Energy Transfer
Control of Macroscopic Magnetic Order Dynamics Using SRR-Enhanced THz Magnetic Fields
Numerical Simulation of the Macroscopic Domain Formation
Conclusion.