Reshaping Of Dirac Cones In Topological Insulators And Graphene
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Reshaping Of Dirac Cones In Topological Insulators And Graphene
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Author : Álvaro Díaz Fernández
language : en
Publisher: Springer Nature
Release Date : 2020-12-09
Reshaping Of Dirac Cones In Topological Insulators And Graphene written by Álvaro Díaz Fernández and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-09 with Science categories.
Dirac cones are ubiquitous to non-trivial quantum matter and are expected to boost and reshape the field of modern electronics. Particularly relevant examples where these cones arise are topological insulators and graphene. From a fundamental perspective, this thesis proposes schemes towards modifying basic properties of these cones in the aforementioned materials. The thesis begins with a brief historical introduction which is followed by an extensive chapter that endows the reader with the basic tools of symmetry and topology needed to understand the remaining text. The subsequent four chapters are devoted to the reshaping of Dirac cones by external fields and delta doping. At all times, the ideas discussed in the second chapter are always a guiding principle to understand the phenomena discussed in those four chapters. As a result, the thesis is cohesive and represents a major advance in our understanding of the physics of Dirac materials.
Theoretical Study On Correlation Effects In Topological Matter
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Author : Hiroki Isobe
language : en
Publisher: Springer
Release Date : 2017-04-04
Theoretical Study On Correlation Effects In Topological Matter written by Hiroki Isobe and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-04 with Technology & Engineering categories.
This thesis elucidates electron correlation effects in topological matter whose electronic states hold nontrivial topological properties robust against small perturbations. In addition to a comprehensive introduction to topological matter, this thesis provides a new perspective on correlated topological matter. The book comprises three subjects, in which electron correlations in different forms are considered. The first focuses on Coulomb interactions for massless Dirac fermions. Using a perturbative approach, the author reveals emergent Lorentz invariance in a low-energy limit and discusses how to probe the Lorentz invariance experimentally. The second subject aims to show a principle for synthesizing topological insulators with common, light elements. The interplay between the spin–orbit interaction and electron correlation is considered, and Hund's rule and electron filling are consequently found to play a key role for a strong spin–orbit interaction important for topological insulators. The last subject is classification of topological crystalline insulators in the presence of electron correlation. Unlike non-interacting topological insulators, such two- and three-dimensional correlated insulators with mirror symmetry are demonstrated to be characterized, respectively, by the Z4 and Z8 group by using the bosonization technique and a geometrical consideration.
Reshaping Of Dirac Cones In Topological Insulators And Graphene
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Author : Álvaro Díaz Fernández
language : es
Publisher:
Release Date : 2019
Reshaping Of Dirac Cones In Topological Insulators And Graphene written by Álvaro Díaz Fernández and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
La mecánica cuántica alcanzó su máximo esplendor a principios del siglo XX de la mano de grandes científicos como Schrödinger, Heisenberg, Dirac, Pauli y muchos otros. Los conceptos que estos físicos introdujeron fueron increíblemente revolucionarios, incluso uno podría aventurar a decir que superaron a la relatividad de Einstein. Hoy en día pudiera parecer que únicamente explotamos las consecuencias de la mecánica cuántica para construir transistores o diodos emisores de luz, dispositivos que, por otra parte, han cambiado por completo el mundo en el que vivimos. En lo que respecta a la física teórica, uno podría pensar que lo único que queda por hacer es encender la maquinaria matemática y esperar a obtener resultados, sin nuevos conceptos que descubrir. Sin embargo, nada más lejos de la realidad. Tenemos la suerte de vivir en lo que los expertos denominan la segunda revolución cuántica...
Berry Phases In Electronic Structure Theory
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Author : David Vanderbilt
language : en
Publisher: Cambridge University Press
Release Date : 2018-11
Berry Phases In Electronic Structure Theory written by David Vanderbilt 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 2018-11 with Science categories.
An introduction to the role of Berry phases in our modern understanding of the physics of electrons in solids.
Nanoplasmonics
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Author : Grégory Barbillon
language : en
Publisher: BoD – Books on Demand
Release Date : 2017-06-21
Nanoplasmonics written by Grégory Barbillon and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-21 with Science categories.
Nanoplasmonics is a young topic of research, which is part of nanophotonics and nano-optics. Nanoplasmonics concerns to the investigation of electron oscillations in metallic nanostructures and nanoparticles. Surface plasmons have optical properties, which are very interesting. For instance, surface plasmons have the unique capacity to confine light at the nanoscale. Moreover, surface plasmons are very sensitive to the surrounding medium and the properties of the materials on which they propagate. In addition to the above, the surface plasmon resonances can be controlled by adjusting the size, shape, periodicity, and materials' nature. All these optical properties can enable a great number of applications, such as biosensors, optical modulators, photodetectors, and photovoltaic devices. This book is intended for a broad audience and provides an overview of some of the fundamental knowledges and applications of nanoplasmonics.
Recent Advances In Graphene Research
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Author : Pramoda Kumar Nayak
language : en
Publisher: BoD – Books on Demand
Release Date : 2016-10-12
Recent Advances In Graphene Research written by Pramoda Kumar Nayak and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-12 with Technology & Engineering categories.
This book ''Recent Advances in Graphene Research'' provides a state-of-the-art report of the knowledge accumulated in graphene research. It contains 12 chapters divided into three sections. Section 1 ''Fundamentals of Graphene'' deals with quantum hall effect in graphene, electronic properties of carbon nanostructures and spectral statistics of graphene nanoflakes. In Section 2 ''Graphene Synthesis,'' the optimized synthesis procedures of graphene and its derivatives are presented. The application of graphene and its nanostructured-based materials for energy storage, conservation and other extensive applications are described in Section 3 ''Application of Graphene and its Nanostructures''. We believe that this book offers broader prospective to the readers in the recent advances in graphene research, starting from fundamental science to application.
Paul Dirac
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Author : Abraham Pais
language : en
Publisher: Cambridge University Press
Release Date : 2005-09-08
Paul Dirac written by Abraham Pais 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 2005-09-08 with Biography & Autobiography categories.
A unique insight into Dirac's life and work, by four internationally respected physicists.
Topological Insulators
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Author : Frank Ortmann
language : en
Publisher: John Wiley & Sons
Release Date : 2015-06-29
Topological Insulators written by Frank Ortmann and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-29 with Technology & Engineering categories.
There are only few discoveries and new technologies in physical sciences that have the potential to dramatically alter and revolutionize our electronic world. Topological insulators are one of them. The present book for the first time provides a full overview and in-depth knowledge about this hot topic in materials science and condensed matter physics. Techniques such as angle-resolved photoemission spectrometry (ARPES), advanced solid-state Nuclear Magnetic Resonance (NMR) or scanning-tunnel microscopy (STM) together with key principles of topological insulators such as spin-locked electronic states, the Dirac point, quantum Hall effects and Majorana fermions are illuminated in individual chapters and are described in a clear and logical form. Written by an international team of experts, many of them directly involved in the very first discovery of topological insulators, the book provides the readers with the knowledge they need to understand the electronic behavior of these unique materials. Being more than a reference work, this book is essential for newcomers and advanced researchers working in the field of topological insulators.
Topological Insulators
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Author : Shun-Qing Shen
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-01-11
Topological Insulators written by Shun-Qing Shen and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-11 with Technology & Engineering categories.
Topological insulators are insulating in the bulk, but process metallic states present around its boundary owing to the topological origin of the band structure. The metallic edge or surface states are immune to weak disorder or impurities, and robust against the deformation of the system geometry. This book, the first of its kind on topological insulators, presents a unified description of topological insulators from one to three dimensions based on the modified Dirac equation. A series of solutions of the bound states near the boundary are derived, and the existing conditions of these solutions are described. Topological invariants and their applications to a variety of systems from one-dimensional polyacetalene, to two-dimensional quantum spin Hall effect and p-wave superconductors, and three-dimensional topological insulators and superconductors or superfluids are introduced, helping readers to better understand this fascinating new field. This book is intended for researchers and graduate students working in the field of topological insulators and related areas. Shun-Qing Shen is a Professor at the Department of Physics, the University of Hong Kong, China.
Introduction To Topological Quantum Computation
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Author : Jiannis K. Pachos
language : en
Publisher: Cambridge University Press
Release Date : 2012-04-12
Introduction To Topological Quantum Computation written by Jiannis K. Pachos 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 2012-04-12 with Computers categories.
Ideal for graduate students and researchers from various sub-disciplines, this book provides an excellent introduction to topological quantum computation.