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Collective Excitations in the Antisymmetric Channel of Raman Spectroscopy

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Collective Excitations in the Antisymmetric Channel of Raman Spectroscopy Synopsis

This thesis contains three breakthrough results in condensed matter physics. Firstly, broken reflection symmetry in the hidden-order phase of the heavy-fermion material URu2Si2 is observed for the first time. This represents a significant advance in the understanding of this enigmatic material which has long intrigued the condensed matter community due to its emergent long range order exhibited at low temperatures (the so-called “hidden order”). Secondly and thirdly, a novel collective mode (the chiral spin wave) and a novel composite particle (the chiral exciton) are discovered in the three dimensional topological insulator Bi2Se3. This opens up new avenues of possibility for the use of topological insulators in photonic, optoelectronic, and spintronic devices. These discoveries are facilitated by using low-temperature polarized Raman spectroscopy as a tool for identifying optically excited collective modes in strongly correlated electron systems and three-dimensional topological insulators.  

About This Edition

ISBN: 9783030893347
Publication date:
Author: HsiangHsi Kung
Publisher: Springer Nature Switzerland AG
Format: Paperback
Pagination: 151 pages
Series: Springer Theses
Genres: Materials science
Condensed matter physics (liquid state and solid state physics)
Spectrum analysis, spectrochemistry, mass spectrometry
Testing of materials
Laser physics