Results 91 to 100 of about 21,384 (300)

Quantum transport in topological condensed matter systems [PDF]

, 2021
Topology in condensed matter physics is a field that has exploded in the last two decades. With the realization of its importance, some previously unexplained observations can now be explained.
EKSTRÖM, Carl Johan Ingvar
core  

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Unoriented 3d TFTs

Journal of High Energy Physics, 2017
This paper generalizes two facts about oriented 3d TFTs to the unoriented case. On one hand, it is known that oriented 3d TFTs having a topological boundary condition admit a state-sum construction known as the Turaev-Viro construction.
Lakshya Bhardwaj
doaj   +1 more source

Magnetic proximity-enhanced Curie temperature of Cr-doped Bi2Se3 thin films

, 2015
Beam time awarded on ID32 at the ESRF (Proposal No. HC-1282) and on I10 at the Diamond Light Source (Proposal No. SI-10207) are acknowledged. T.H. acknowledges the John Fell Oxford University Press (OUP) Research Fund. A.A.B.
van der Laan, G, Kummer, K, van der Laan, G., Collins-McIntyre, LJ, Kummer, K., Figuorea, A.I., Hesjedal, T, Collins-McIntyre, Liam James, Figuorea, AI, Baker, A. A., Baker, A, Collins-McIntyre, Liam J., Figueroa, A. I., Hesjedal, Thorsten, Baker, Alexander, Hesjedal, T.   +15 more
core   +1 more source

Topological Insulators at Room Temperature [PDF]

, 2010
Topological insulators are new states of quantum matter with surface states protected by the time-reversal symmetry. In this work, we perform first-principle electronic structure calculations for Sb{sub 2}Te{sub 3}, Sb{sub 2}Se{sub 3}, Bi{sub 2}Te{sub 3}
Qi, Xiao-Liang, Zhang, Shou-Cheng, Liu, Chao-Xing, Dai, Xi, Zhang, Haijun, Fang, Zhong   +5 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Counterpropagating topological interface states in graphene patchwork structures with regular arrays of nanoholes

, 2018
Topological properties of graphene with nanoholes are theoretically investigated in detail. It is revealed that two types of hole arrangements, honeycomb array and triangular array, give rise to two topologically distinct states.
Kariyado, Toshikaze, Yang, Hongxin, Jiang, Yong-Cheng, Hu, Xiao   +3 more
core   +1 more source

Mixed-state topological order parameters for symmetry-protected fermion matter [PDF]

Physical Review Research
We construct an observable mixed-state topological order parameter for symmetry-protected free-fermion matter. It resolves the entire table of topological insulators and superconductors, relying exclusively on the symmetry class, but not on unitary symmetries.
Ze-Min Huang, Sebastian Diehl
openaire   +3 more sources

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source

Amorphous topological superconductivity in a Shiba glass

, 2018
Topological states of matter support quantised nondissipative responses and exotic quantum particles that cannot be accessed in common materials. The exceptional properties and application potential of topological materials have triggered a large-scale ...
Teemu Ojanen, Westström, Alex, Isac Sahlberg, Ojanen, Teemu, Alex Westström, Pöyhönen, Kim, Kim Pöyhönen, Sahlberg, Isac   +7 more
core   +1 more source