Results 11 to 20 of about 53,071 (272)
Topological Insulator Metamaterials
Chemical Reviews, 2023 Confinement of electromagnetic fields at the subwavelength scale via metamaterial paradigms is an established method to engineer light-matter interaction in most common material systems, from insulators to semiconductors, from metals to superconductors.
Harish N. S. Krishnamoorthy +3 more
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Topological insulator laser: Theory [PDF]
Science, 2018 Topological protection for lasersIdeas based on topology, initially developed in mathematics to describe the properties of geometric space under deformations, are now finding application in materials, electronics, and optics. The main driver is topological protection, a property that provides stability to a system even in the presence of defects ...
Harari, Gal +7 more
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Topologically Localized Insulators
Physical Review Letters, 2022 We show that fully-localized, three-dimensional, time-reversal-symmetry-broken insulators do not belong to a single phase of matter but can realize topologically distinct phases that are labelled by integers. The phase transition occurs only when the system becomes conducting at some filling.
Lapierre, Bastien +2 more
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Polarization-Induced Phase Transitions in Ultra-Thin InGaN-Based Double Quantum Wells
Nanomaterials, 2022 We investigate the phase transitions and the properties of the topological insulator in InGaN/GaN and InN/InGaN double quantum wells grown along the [0001] direction.
Sławomir P. Łepkowski +1 more
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Spinful hinge states in the higher-order topological insulators WTe2
Nature Communications, 2023 The standard topological insulator is characterized by an insulating bulk and a conducting boundary, so a three dimensional insulating bulk of a topological insulator has a conducting surface. Recently, this idea was extended to the edges of the surfaces
Jekwan Lee +8 more
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Fractional Topological Insulators [PDF]
Physical Review Letters, 2009 We analyze generalizations of two dimensional topological insulators which can be realized in interacting, time reversal invariant electron systems. These states, which we call fractional topological insulators, contain excitations with fractional charge and statistics in addition to protected edge modes.
Levin, Michael, Stern, Ady
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Non-Hermitian non-Abelian topological insulators with PT symmetry
Physical Review Research, 2021 We study a non-Hermitian non-Abelian topological insulator preserving PT symmetry, where the non-Hermitian term represents nonreciprocal hoppings. As it increases, a spontaneous PT symmetry breaking transition occurs in the perfect-flat band model from a
Motohiko Ezawa
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Higher-order topological Mott insulator on the pyrochlore lattice
Scientific Reports, 2021 We provide the first unbiased evidence for a higher-order topological Mott insulator in three dimensions by numerically exact quantum Monte Carlo simulations.
Yuichi Otsuka +4 more
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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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