ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Generating end modes in a superconducting wire by periodic driving of the hopping

Saha, Siddhartha and Sivarajan, Shankar N and Sen, Diptiman (2017) Generating end modes in a superconducting wire by periodic driving of the hopping. In: Physical Review B, 95 (17). ISSN 2469-9950

phy_rev_B_95-17_2017 .pdf - Published Version

Download (1MB) | Preview
Official URL: https://doi.org/10.1103/PhysRevB.95.174306


We show that harmonic driving of either the magnitude or the phase of the nearest-neighbor hopping amplitude in a p-wave superconducting wire can generate modes localized near the ends of the wire. The Floquet eigenvalues of these modes can either be equal to ±1 (which is known to occur in other models) or can lie near other values in complex conjugate pairs, which is unusual; we call the latter anomalous end modes. All the end modes have equal probabilities of particles and holes. If the amplitude of driving is small, we observe an interesting bulk-boundary correspondence for the anomalous end modes: the Floquet eigenvalues and the peaks of the Fourier transform of these end modes lie close to the Floquet eigenvalues and momenta at which the Floquet eigenvalues of the bulk system have extrema.

Item Type: Journal Article
Publication: Physical Review B
Publisher: American Physical Society
Additional Information: The copyright for this article belongs to the Authors.
Department/Centre: UG Programme
Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 02 Jun 2022 06:45
Last Modified: 02 Jun 2022 06:45
URI: https://eprints.iisc.ac.in/id/eprint/73071

Actions (login required)

View Item View Item