Current browse context:
cond-mat.str-el
Change to browse by:
References & Citations
Condensed Matter > Strongly Correlated Electrons
Title: Photoinduced Topological Phase Transitions in Topological Magnon Insulators
(Submitted on 15 Jan 2018 (v1), last revised 11 Nov 2018 (this version, v3))
Abstract: Topological magnon insulators are the bosonic analogs of electronic topological insulators. They are manifested in magnetic materials with topologically nontrivial magnon bands as realized experimentally in a quasi-two-dimensional (quasi-2D) kagome ferromagnet Cu(1-3, bdc), and they also possess protected magnon edge modes. These topological magnetic materials can transport heat as well as spin currents, hence they can be useful for spintronic applications. Moreover, as magnons are charge-neutral spin-${\bf 1}$ bosonic quasiparticles with a magnetic dipole moment, topological magnon materials can also interact with electromagnetic fields through the Aharonov-Casher effect. In this report, we study photoinduced topological phase transitions in intrinsic topological magnon insulators in the kagom\'e ferromagnets. Using magnonic Floquet-Bloch theory, we show that by varying the light intensity, periodically driven intrinsic topological magnetic materials can be manipulated into different topological phases with different sign of the Berry curvatures and the thermal Hall conductivity. We further show that, under certain conditions, periodically driven gapped topological magnon insulators can also be tuned to synthetic gapless topological magnon semimetals with Dirac-Weyl magnon cones. We envision that this work will pave the way for interesting new potential practical applications in topological magnetic materials
Submission history
From: Solomon Akaraka Owerre [view email][v1] Mon, 15 Jan 2018 19:00:00 GMT (1108kb,D)
[v2] Tue, 13 Feb 2018 12:16:17 GMT (1109kb,D)
[v3] Sun, 11 Nov 2018 13:40:47 GMT (1084kb,D)
Link back to: arXiv, form interface, contact.