Zobrazeno 1 - 10
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pro vyhledávání: '"Basu, Saurabh"'
In this paper, we study a non-Hermitian (NH) ladder subjected to a variety of driving protocols. The driven system looses chiral symmetry (CS) whose presence is indispensable for its topological characterization. Further, the bulk boundary correspond
Externí odkaz:
http://arxiv.org/abs/2410.05427
Autor:
Islam, Mijanur, Basu, Saurabh
In this work, we investigate an $\alpha$-$T_3$ lattice in the form of a Corbino disk, characterized by inner and outer radii $R_1$ and $R_2$, threaded by a tunable magnetic flux. Through exact (analytic) solution of the stationary Dirac-Weyl equation
Externí odkaz:
http://arxiv.org/abs/2409.20395
Autor:
Debnath, Shreya, Basu, Saurabh
In this paper, we study the topological properties of magnons on a dice lattice, also known as the dual of a more widely studied kagome lattice. This structure has a central atom at the center of the honeycomb lattice, which leads to the formation of
Externí odkaz:
http://arxiv.org/abs/2409.19343
We theoretically propose the occurrence of a quantum spin Hall (QSH) and a second order topological phase transition (TPT) driven by electron-phonon (e-p) coupling in a pseudospin-$1$ fermionic system on an $\alpha$-$T_3$ lattice. Our model is formul
Externí odkaz:
http://arxiv.org/abs/2408.14367
Autor:
Lahiri, Srijata, Basu, Saurabh
We systematically investigate the topological and localization properties of a quadrupolar insulator represented by the celebrated Benalcazar-Bernevig-Hughes model in presence of a quasiperiodic disorder instilled in its hopping amplitude. While diso
Externí odkaz:
http://arxiv.org/abs/2406.13535
Autor:
Roy, Koustav, Basu, Saurabh
Publikováno v:
Phys. Rev. B 110, 165403 (2024)
We perform systematic analyses of single and multi-frequency driving protocols on a Rashba nanowire with superconducting correlations induced by proximity effects. The results for the single-mode drive reveal interesting frequency dependencies of the
Externí odkaz:
http://arxiv.org/abs/2405.11307
Depth-Resolved Characterization of Centrifugal Disk Finishing of Additively Manufactured Inconel 718
Surface characteristics are a major contributor to the in-service performance, particularly fatigue life, of additively manufactured (AM) components. Centrifugal disk finishing (CDF) is one of many rigid media, abrasive machining processes employed t
Externí odkaz:
http://arxiv.org/abs/2404.19084
We present impelling evidence of topological phase transitions induced by electron-phonon (e-ph) coupling in an $\alpha$-$T_3$ Haldane-Holstein model that presents smooth tunability between graphene ($\alpha=0$) and a dice lattice $(\alpha=1)$. The e
Externí odkaz:
http://arxiv.org/abs/2404.08467
Publikováno v:
Phys. Rev. B 110, 115132 (2024)
The Bernevig-Hughes-Zhang (BHZ) model, which serves as a cornerstone in the study of the quantum spin Hall insulators, showcases robust spin-filtered helical edge states in a nanoribbon geometry. In the presence of an in-plane magnetic field, these (
Externí odkaz:
http://arxiv.org/abs/2404.04184
Publikováno v:
Phys. Rev. B 109, 115407 (2024)
We examine a non-Hermitian (NH) tight-binding system comprising of two orbitals per unit cell and their electrical circuit analogues. We distinguish the PT-symmetric and non-PT symmetric cases characterised by non-reciprocal nearest neighbour couplin
Externí odkaz:
http://arxiv.org/abs/2311.15014