Results 11 to 20 of about 5,529 (134)
Zeros of Green functions in topological insulators
Physical Review Research, 2022 This study demonstrates that the zeros of the diagonal components of Green functions are key quantities that can detect noninteracting topological insulators. We show that zeros of the Green functions traverse the band gap in the topological phases.
Takahiro Misawa, Youhei Yamaji
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Embedded topological insulators [PDF]
Physical Review B, 2019 6+9 ...
Thomas I. Tuegel +2 more
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Photonic topological insulators [PDF]
Nature Materials, 2012 Recent progress in understanding the topological properties of condensed matter has led to the discovery of time-reversal-invariant topological insulators. A remarkable and useful property of these materials is that they support unidirectional spin-polarized propagation at their surfaces.
Alexander B. Khanikaev +5 more
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Critical topology and pressure-induced superconductivity in the van der Waals compound AuTe2Br
npj Quantum Materials, 2022 The study on quantum spin Hall effect and topological insulators formed the prologue to the surge of research activities in topological materials in the past decade.
Erjian Cheng +12 more
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Physical Review Research, 2020 Topological insulators are materials with spectral bands associated with an integer-valued index, manifesting through quantized bulk phenomena and robust boundary effects.
Ioannis Petrides, Oded Zilberberg
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Topological-insulator nanocylinders
SciPost Physics Core, 2023 Nanostructures, such a quantum dots or nanoparticles, made of three-dimensional topological insulators (3DTIs) have been recently attracting increasing interest, especially for their optical properties. In this paper we calculate the energy spectrum, the surface states and the dipole matrix elements for optical transitions with in ...
Governale Michele, Taddei Fabio
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Granular topological insulators [PDF]
Nanoscale, 2017 Granular conductors form an artificially engineered class of solid state materials wherein the microstructure can be tuned to mimic a wide range of otherwise inaccessible physical systems. At the same time, topological insulators (TIs) have become a cornerstone of modern condensed matter physics as materials hosting metallic states on the surface and ...
Abhishek Banerjee +5 more
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Magnetized topological insulator multilayers [PDF]
Proceedings of the National Academy of Sciences, 2020 Significance Topological insulators have Dirac cone surface states protected by time-reversal symmetry (TRS). Weak magnetic order in topological insulator thin films can lead to the quantum anomalous Hall effect (QAHE), which was first realized by magnetic doping of topological insulators to establish a fragile ferromagnetic ...
Chao Lei, Shu Chen, Allan H. MacDonald
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Topological Kondo Insulators [PDF]
Physical Review Letters, 2010 Kondo insulators are particularly simple type of heavy electron material, where a filled band of heavy quasiparticles gives rise to a narrow band insulator. Starting with the Anderson lattice Hamiltonian, we develop a topological classification of emergent band structures for Kondo insulators and show that these materials may host three-dimensional ...
Dzero, Maxim +3 more
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Demonstration of a quantized acoustic octupole topological insulator
Nature Communications, 2020 Although multipole topological insulators have been theoretically described and experimentally observed in 2D, third-order topological insulators in 3D have not been observed yet.
Xiang Ni +4 more
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