Linear And Nonlinear Electromagnetic Responses In Topological Semimetals

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Linear And Nonlinear Electromagnetic Responses In Topological Semimetals

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Author : Shudan Zhong
language : en
Publisher:
Release Date : 2018

Linear And Nonlinear Electromagnetic Responses In Topological Semimetals written by Shudan Zhong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.

Topological Phases Of Matter

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Author : Roderich Moessner
language : en
Publisher: Cambridge University Press
Release Date : 2021-04-29

Topological Phases Of Matter written by Roderich Moessner and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-29 with Mathematics categories.

This important graduate level text unites the physical mechanisms behind the phenomena of topological matter within a theoretical framework.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1969

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Aeronautics categories.

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Linear And Nonlinear Optical Responses Of Chiral Multifold Semimetals

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Author : Miguel Ángel Sánchez Martínez
language : en
Publisher: Springer Nature
Release Date : 2023-05-30

Linear And Nonlinear Optical Responses Of Chiral Multifold Semimetals written by Miguel Ángel Sánchez Martínez and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-05-30 with Science categories.

Since the initial predictions for the existence of Weyl fermions in condensed matter, many different experimental techniques have confirmed the existence of Weyl semimetals. Among these techniques, optical responses have shown a variety of effects associated with the existence of Weyl fermions. In chiral crystals, we find a new type of fermions protected by crystal symmetries — the chiral multifold fermions — that can be understood as a higher-spin generalization of Weyl fermions. This work provides a complete description of all chiral multifold fermions, studying their topological properties and the k·p models describing them. We compute the optical conductivity of all chiral multifold fermions and establish their optical selection rules. We find that the activation frequencies are different for each type of multifold fermion, thus constituting an experimental fingerprint for each type of multifold fermion. Building on the theoretical results obtained in the first part of our analysis, we study two chiral multifold semimetals: RhSi and CoSi. We analyze the experimental results with k·p and tight-binding models based on the crystal symmetries of the material. We trace back the features observed in the experimental optical conductivity to the existence of multifold fermions near the Fermi level and estimate the chemical potential and the scattering lifetime in both materials. Finally, we provide an overview of second-order optical responses and study the second-harmonic generation of RhSi. We find a sizeable second-harmonic response in the low-energy regime associated with optical transitions between topological bands. However, this regime is extremely challenging to access with the current experimental techniques. We conclude by providing an overview of the main results, highlighting potential avenues to further research on chiral multifold semimetals and the future of optical responses as experimental probes to characterize topological phases.

Referativny Zhurnal

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Author :
language : en
Publisher:
Release Date : 1984

Referativny Zhurnal written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Physics categories.

Linear Electrodynamic Response Of Topological Semimetals

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Author : Artem V. Pronin
language : en
Publisher: Springer Nature
Release Date : 2023-08-17

Linear Electrodynamic Response Of Topological Semimetals written by Artem V. Pronin and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-17 with Technology & Engineering categories.

This book provides a model description for the electromagnetic response of topological nodal semimetals and summarizes recent experimental findings in these systems. Specifically, it discusses various types of topological semimetals – Dirac, Weyl, nodal-line, triple-point, and multifold semimetals – and provides description for the characteristic features of the linear electrodynamic response for all these types of materials. Topological semimetals possess peculiar bulk electronic band structure, which leads to unusual electrodynamic response. For example, the low-energy inter-band optical conductivity of nodal semimetals is supposed to demonstrate power-law frequency dependence and the intra- and inter-band contributions to the conductivity are often mixed. Further, the magneto-optical response is also unusual, because of the non-equidistant spacing between the Landau levels. Finally, in semimetals with chiral electronic bands, e.g. in Weyl semimetals, the simultaneous application of parallel magnetic and electric fields leads to the chiral anomaly, i.e. to a misbalance between the electrons with diffident chiralities. This misbalance affects the electrodynamics properties of the material and can be detected optically. All these points are addressed here in detail. The book is written for a wide audience of physicists, working in the field of topological condensed matter physics. It gives a pedagogical introduction enabling graduate students and non-experts to familiarize themselves with the subject.

Inis Atomindex

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Author :
language : en
Publisher:
Release Date : 1985

Inis Atomindex written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Nuclear energy categories.

International Aerospace Abstracts

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Author :
language : en
Publisher:
Release Date : 1977

International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Aeronautics categories.

Linear And Nonlinear Responses In Magnetic Topological Materials

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Author : Ruobing Mei
language : en
Publisher:
Release Date : 2024

Linear And Nonlinear Responses In Magnetic Topological Materials written by Ruobing Mei and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024 with categories.

Topological states of matter are exotic quantum phases characterized by global geometric properties that remain robust against local perturbations. Topological insulator (TI) is an example of topological states with time-reversal symmetry. Breaking time-reversal symmetry in topological insulators via magnetism can lead to new topological states including quantum anomalous Hall (QAH) state, axion insulator state, and chiral topological superconductivity (TSC). These magnetic topological systems provide an appealing platform for exploring the interplay between electromagnetism, topology, and magnetic orders. In this dissertation, I will summarize my theoretical works on the linear and nonlinear physical responses in magnetic topological materials.

Investigation Of Electronic And Magnetic Responses In Topological Semimetals

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Author : Sukriti Singh
language : en
Publisher:
Release Date : 2022*

Investigation Of Electronic And Magnetic Responses In Topological Semimetals written by Sukriti Singh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022* with categories.