Online Seminar by Dr Tanay Nag | Shiv Nadar University
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Online Seminar by Dr Tanay Nag

Please find the proposed schedule below.

- Date of seminar: 14 November 2022 / Monday
- Time: 2 to 3 pm
- Mode: Online through MS teams (Microsoft Link will be shared after your confirmation.)

- Title: Dynamical construction of Quadrupolar and Octupolar topological superconductors
- Abstract: We propose a three-step periodic drive protocol to engineer two-dimensional (2D) Floquet quadrupole superconductors and three-dimensional (3D) Floquet octupole superconductors hosting zero-dimensional Majorana corner modes (MCMs), based on unconventional d-wave superconductivity. Remarkably, the driven system conceives four phases with only 0 MCMs, no MCMs, only anomalous π MCMs, and both regular 0 and anomalous π MCMs. To circumvent the subtle issue of characterizing 0 and π MCMs separately, we employ the periodized evolution operator to architect the dynamical invariants, namely quadrupole and octupole motion in 2D and 3D, respectively, that can distinguish different higher-order topological phases unambiguously. Our study paves the way for the realization of dynamical quadrupolar and octupolar topological superconductors.

- Ref: Phys. Rev. B 105, 155406 (2022)

Event Date: 
Monday, November 14, 2022 -
Monday 14, Nov 2022
02:00 PM - 03:00 PM