Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Das, Ankur"'
Autor:
Grigorev, Oleg, Das, Ankur
Recent experimental and theoretical development in the Quantum Hall effect in monolayer graphene showed that the previous model of the valley-anisotropy interaction is incomplete, as it was assumed to be ultra-short range (USR). In this work, we use
Externí odkaz:
http://arxiv.org/abs/2408.11789
It has been realized over the past two decades that topological nontriviality can be present not only in insulators but also in gapless semimetals, the most prominent example being Weyl semimetals in three dimensions. Key to topological classificatio
Externí odkaz:
http://arxiv.org/abs/2401.02966
Autor:
Manna, Sourav, Das, Ankur
Shot noise at a conductance plateau in a quantum point contact (QPC) can be explained by considering equilibrations at the quantum Hall edges. The indication from recent experiments is that the charge equilibration length is much shorter than the the
Externí odkaz:
http://arxiv.org/abs/2307.08264
The $\nu = 2/3$ filling is the simplest paradigmatic example of a fractional quantum Hall state, which contains counter-propagating edge modes. These modes can be either in the unequilibrated regime or equilibrated to different extents, on top of a p
Externí odkaz:
http://arxiv.org/abs/2307.05175
Two-terminal conductance quantization in the context of quantum Hall (QH) physics is intimately related to current carried by a discrete number of edge modes. Upon pinching off of a QH bar, one may reach regimes in which some modes which are fully tr
Externí odkaz:
http://arxiv.org/abs/2307.05173
Publikováno v:
Phys. Rev. Lett. 132, 136502 (2024)
The nature of the bulk topological order of the 5/2 non-Abelian fractional quantum Hall state and the steady-state of its edge are long-studied questions. The most promising non-Abelian model bulk states are the Pfaffian (Pf), anti-Pffafian (APf), an
Externí odkaz:
http://arxiv.org/abs/2212.05732
Publikováno v:
Phys. Rev. B 107, 125422(2023)
Monolayer graphene at charge neutrality in a quantizing magnetic field is a quantum Hall ferromagnet. Due to the spin and valley (near) degeneracies, there is a plethora of possible ground states. Previous theoretical work, based on a stringent ultra
Externí odkaz:
http://arxiv.org/abs/2211.02531
Publikováno v:
Phys. Rev. Lett. 130, 186202 (2023)
Topological insulator-based methods underpin the topological classification of gapped bands, including those surrounding semi-metallic nodal defects. However, multiple bands with gap-closing points can also possess non-trivial topology. We construct
Externí odkaz:
http://arxiv.org/abs/2205.07814
Autor:
Mitra, Ankan, Das, Ankur, Ghosh, Sourav, Sarkar, Swaimanti, Bandyopadhyay, Debasish, Gangopadhyay, Somnath, Chattopadhyay, Sreya
Publikováno v:
In BBA - Molecular Basis of Disease October 2024 1870(7)
Autor:
Noßmann, Bastian, Yu, Zuodong, Das, Ankur, Schulte, Stefan, Néel, Nicolas, Wu, Chien-Te, Kirchner, Stefan, Kröger, Jörg
Publikováno v:
In Surface Science August 2024 746