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pro vyhledávání: '"Gonçalves, Miguel"'
Fractional Chern insulators (FCI) with fractionally quantized Hall conductance at fractional fillings and an extended quantum anomalous Hall (EQAH) crystal with an integer quantized Hall conductance over an extended region of doping were recently obs
Externí odkaz:
http://arxiv.org/abs/2409.05043
Autor:
Gonçalves, Miguel, Lin, Shi-Zeng
Doping carriers into a correlated quantum ground state offers a promising route to generate new quantum states. The recent advent of moir\'{e} superlattices provided a versatile platform with great tunability to explore doping physics in systems with
Externí odkaz:
http://arxiv.org/abs/2407.12198
Higher-order topological insulators are an intriguing new family of topological states that host lower-dimensional boundary states. Concurrently, quasiperiodic systems have garnered significant interest due to their complex localization and topologic
Externí odkaz:
http://arxiv.org/abs/2406.17602
Weyl nodal loop semimetals are gapless topological phases that, unlike their insulator counterparts, may be unstable to small perturbations that respect their topology-protecting symmetries. Here, we analyze a clean system perturbed by chiral off-dia
Externí odkaz:
http://arxiv.org/abs/2403.05298
Autor:
Aubreville, Marc, Pan, Zhaoya, Sievert, Matti, Ammeling, Jonas, Ganz, Jonathan, Oetter, Nicolai, Stelzle, Florian, Frenken, Ann-Kathrin, Breininger, Katharina, Goncalves, Miguel
The surgical removal of head and neck tumors requires safe margins, which are usually confirmed intraoperatively by means of frozen sections. This method is, in itself, an oversampling procedure, which has a relatively low sensitivity compared to the
Externí odkaz:
http://arxiv.org/abs/2311.07216
We unveil a novel mechanism for quasicondensation of hard-core bosons in the presence of quasiperiodicity-induced multifractal single-particle states. The new critical state, here dubbed fractal quasicondensate, is characterized by natural orbitals w
Externí odkaz:
http://arxiv.org/abs/2310.10757
Autor:
Gonçalves, Miguel
We study the scaling of the entanglement entropy in different classes of one-dimensional fermionic quasiperiodic systems with and without pairing, focusing on multifractal critical points/phases. We find that the entanglement entropy scales logarithm
Externí odkaz:
http://arxiv.org/abs/2310.03060
Publikováno v:
Phys. Rev. B 109, 174202 (2024)
We study the fate of two-dimensional quadratic band crossing topological phases under a one-dimensional quasiperiodic modulation. By employing numerically exact methods, we fully characterize the phase diagram of the model in terms of spectral, local
Externí odkaz:
http://arxiv.org/abs/2309.03896
Publikováno v:
Phys. Rev. B 108, 104201 (2023)
Quasiperiodic systems in one dimension can host non-ergodic states, e.g. localized in position or momentum. Periodic quenches within localized phases yield Floquet eigenstates of the same nature, i.e. spatially localized or ballistic. However, period
Externí odkaz:
http://arxiv.org/abs/2306.12479
Publikováno v:
Phys. Rev. B 109, 014204 (2024)
We have found the first instance of a third-order topological Anderson insulator (TOTAI). This disorder-induced topological phase is gapped and characterized by a quantized octupole moment and topologically protected corner states, as revealed by a d
Externí odkaz:
http://arxiv.org/abs/2305.19209