This title appears in the Scientific Report :
2017
Please use the identifier:
http://hdl.handle.net/2128/22133 in citations.
Topological Matter - Topological Insulators, Skyrmions and Majoranas
Topological Matter - Topological Insulators, Skyrmions and Majoranas
Condensed matter physics is currently undergoing a revolution through the introduction of concepts arising from topology that are used to characterize physical states, fields and properties from a completely different perspective. With the introduction of topology, the perspective is changed from de...
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Personal Name(s): | Blügel, Stefan (Editor) |
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Mokrousov, Yuriy (Editor) / Schäpers, Thomas / Ando, Yoichi (Editor) | |
Contributing Institute: |
Neutronenstreuung; JCNS-1 Neutronenstreuung; ICS-1 Halbleiter-Nanoelektronik; PGI-9 Quanten-Theorie der Materialien; PGI-1 Quanten-Theorie der Materialien; IAS-1 |
Imprint: |
Jülich
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
2017
|
Physical Description: |
getr. Zählung |
ISBN: |
978-3-95806-202-3 |
Conference: | Lecture Notes of the 48th IFF Spring School 2017, Jülich (Germany), 2017-03-27 - 2017-04-07 |
Document Type: |
Proceedings Book |
Research Program: |
Addenda |
Series Title: |
Schriften des Forschungszentrums Jülich. Reihe Schlüsseltechnologien / Key Technologies
139 |
Link: |
OpenAccess |
Publikationsportal JuSER |
Condensed matter physics is currently undergoing a revolution through the introduction of concepts arising from topology that are used to characterize physical states, fields and properties from a completely different perspective. With the introduction of topology, the perspective is changed from describing complex systems in terms of local order parameters to a characterization by global quantities, which are measured nonlocally and which endow the systems with a global stability to perturbations. Prominent examples are topological insulators, skyrmions and Majorana fermions. Since topology translates into quantization, and topological order to entanglement, this ongoing revolution has impact on fields like mathematics, materials science, nanoelectronics and quantum information resulting in new device concepts enabling computations without dissipation of energy or enabling the possibility of realizing platforms for topological quantum computation, and ultimately reaching out into applications. Thus, these new exciting scientific developments and their applications are closely related to the grand challenges in information and communication technology and energy saving. Topology is the branch of mathematics that deals with properties of spaces that are invariant under smooth deformations. It provides newly appreciated mathematical tools in condensed matter physics that are currently revolutionizing the field of quantum matter and materials. Topology dictates that if two different Hamiltonians can be smoothly deformed into each other they give rise to many common physical properties and their states are homotopy invariant. Thus, topological invariance, which is often protected by discrete symmetries, provides some robustness that translates into the quantization of properties; such a robust quantization motivates the search and discovery of new topological matter. So far, the mainstream of modern topological condensed matter physics relies on two profoundly different scenarios: the emergence of the complex topology either in real space, as manifested e.g. in non-trivial magnetic structures or in momentum space, finding its realization in such materials as topological and Chern insulators. The latter renowned class of solids attracted considerable attention in recent years owing to its fascinating properties of spin-momentum locking, emergence of topologically protected surface/edge states governed by Dirac physics, as well as the quantization of Hall conductance and the discovery of the quantum spin Hall effect. Historically, the discovery of topological insulators gave rise to the discovery of a whole plethora of topologically non-trivial materials such asWeyl semimetals or topological superconductors, relevant in the context of the realization of Majorana fermions and topological quantum computation. [...] |