Talk on Tuesday Sep 21, 2021 at 14:00 Place: Zoom Seminar Title: Scattering of topological kink-antikink states in bilayer graphene structures Speaker: Nassima Benchtaber, IFISC Abstract: <div> <div> <div> <p>Kink gate potentials applied to bilayer graphene give rise to<br /> topological confined states. Electrons in these states display<br /> valley-momentum locking, which makes them attractive for topological<br /> valleytronics. We study [1] two topological king-antikink constrictions,<br /> namely, a quasi-one-dimensional channel working as a quantun point<br /> contact and a detaching loop acting as a quantum dot. For the former, we<br /> find an anomalous quantized conductance; for the latter, we find that<br /> the conductance curves gives information on the system energy spectrum.<br /> Interestingly, in the presence of tiny magnetic field the device can<br /> work as a valley filter.<br /> <br /> [1] N. Benchtaber, D. Sanchez and L. Serra, arXiv:2103.13323 (2021).</p> <p>Zoom: <a href="https://uibuniversitat.zoom.us/j/84778591747"; style="box-sizing: border-box; background: rgb(255, 255, 255); color: rgb(62, 141, 239); text-decoration: underline; outline: -webkit-focus-ring-color auto 5px; outline-offset: -2px; font-family: Lato, Helvetica, Arial; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; overflow-wrap: break-word;" target="_blank">https://uibuniversitat.zoom.us/j/84778591747</a></p>; </div> </div> </div> Url event:https://ifisc.uib-csic.es/en/events/seminars/scattering-of-topological-kink-...