Results 11 to 20 of about 200,617 (293)
Ultrafast Spin-To-Charge Conversion at the Surface of Topological Insulator Thin Films
Advanced Materials, 2018 Strong spin-orbit coupling, resulting in the formation of spin-momentum-locked surface states, endows topological insulators with superior spin-to-charge conversion characteristics, though the dynamics that govern it have remained elusive.
Battiato, Marco +13 more
core +3 more sources
Charge conservation protected topological phases [PDF]
Physical Review B, 2013 We discuss the relation between particle number conservation and topological phases. In four spatial dimensions, we find that systems belonging to different topological phases in the presence of a U(1) charge conservation can be connected adiabatically ...
Budich, Jan Carl
core +2 more sources
Effective Topological Charge Cancelation Mechanism. [PDF]
Sci Rep, 2016 AbstractTopological defects (TDs) appear almost unavoidably in continuous symmetry breaking phase transitions. The topological origin makes their key features independent of systems’ microscopic details; therefore TDs display many universalities. Because of their strong impact on numerous material properties and their significant role in several ...
Mesarec L +3 more
europepmc +4 more sources
Topological Charge Pumping in Excitonic Insulators [PDF]
Physical Review Letters, 2021 We show that in excitonic insulators with $s$-wave electron-hole pairing, an applied electric field (either pulsed or static) can induce a $p$-wave component to the order parameter, and further drive it to rotate in the $s+ip$ plane, realizing a Thouless charge pump. In one dimension, each cycle of rotation pumps exactly two electrons across the sample.
Zhiyuan Sun, Andrew J. Millis
openaire +3 more sources
Biasing topological charge injection in topological matter [PDF]
Physical Review B, 2021 We explore the interplay between topologies in the momentum and real spaces to formulate a thermodynamic description of nonequilibrium injection of topological charges under external bias. We show that the edge modes engendered by the momentum-space topology can play a functional role of connecting the external reservoirs to the bulk transport of ...
Mostafa Tanhayi Ahari +3 more
openaire +2 more sources
Topological Blockade and Measurement of Topological Charge [PDF]
Physical Review Letters, 2013 The fractionally charged quasiparticles appearing in the 5/2 fractional quantum Hall plateau are predicted to have an extra non-local degree of freedom, known as topological charge. We show how this topological charge can block the tunnelling of these particles, and how such 'topological blockade' can be used to readout their topological charge.
van Heck B +3 more
openaire +7 more sources
Tunable topological charge vortex microlaser [PDF]
Science, 2020 Optical vortices on demand Light has several degrees of freedom (wavelength, polarization, pulse length, and so on) that can be used to encode information. A light beam or pulse can also be structured to have the property of orbital angular momentum, becoming a vortex.
Zhifeng Zhang +11 more
openaire +5 more sources
Electrically charged topological solitons [PDF]
Nuclear Physics B, 2001 Two new families of T-Dual integrable models of dyonic type are constructed. They represent specific $A_n^{(1)}$ singular Non-Abelian Affine Toda models having U(1) global symmetry. Their 1-soliton spectrum contains both neutral and U(1) charged topological solitons sharing the main properties of 4-dimensional Yang-Mills-Higgs monopoles and dyons.
Gomes, J. F. +3 more
openaire +4 more sources
Irrational Charge from Topological Order [PDF]
Physical Review Letters, 2010 4 pages, 1 figure with two ...
Moessner, R., Sondhi, S.
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Topological charge, spin, and heat transistor [PDF]
Physical Review B, 2021 Spin pumping consists in the injection of spin currents into a non-magnetic material due to the precession of an adjacent ferromagnet. In addition to the pumping of spin the precession always leads to pumping of heat, but in the presence of spin-orbital entanglement it also leads to a charge current.
Becerra, V. Fernández +3 more
openaire +5 more sources