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Observation and control of magnetic ...

Kurihara, Takayuki.

Observation and control of magnetic order dynamics by terahertz magnetic nearfield

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Observation and control of magnetic order dynamics by terahertz magnetic nearfieldby Takayuki Kurihara.
作者:	Kurihara, Takayuki.
出版者:	Singapore :Springer Singapore :2021.
面頁冊數:	1 online resource (xiii, 113 p.) :ill. (chiefly col.), digital ;24 cm.
附註:	"Doctoral thesis accepted by The University of Tokyo, Tokyo, Japan."
Contained By:	Springer Nature eBook
標題:	Magnetic fields.
電子資源:	https://doi.org/10.1007/978-981-16-8793-8
ISBN:	9789811687938$q(electronic bk.)

Observation and control of magnetic order dynamics by terahertz magnetic nearfield
Kurihara, Takayuki.

Observation and control of magnetic order dynamics by terahertz magnetic nearfield[electronic resource] /by Takayuki Kurihara. - Singapore :Springer Singapore :2021. - 1 online resource (xiii, 113 p.) :ill. (chiefly col.), digital ;24 cm. - Springer theses,2190-5061. - Springer theses..

"Doctoral thesis accepted by The University of Tokyo, Tokyo, Japan."

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.

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.

ISBN: 9789811687938$q(electronic bk.)

Standard No.: 10.1007/978-981-16-8793-8doiSubjects--Topical Terms:

203345
Magnetic fields.

LC Class. No.: QC762 / K87 2021

Dewey Class. No.: 538.3

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520 $a 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.
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