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						<h1 itemprop="headline">VC-HQMD and iMAT seminar</h1>
						
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							<p class="text--intro" itemprop="description">Join us when Lucas Schneider,  University of California, Berkeley visits us and gives a talk titled: "Superconductivity in atom-by-atom crafted quantum corrals."</p>
						
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									<h2 class="screenreader-only">Oplysninger om arrangementet</h2>

									
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														Fredag 16. august 2024,
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														&nbsp;kl. 13:30 -  14:30
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													<p class="news-event__info__item__ical-link"><a href="/aktuelt/nyhed/artikel/default-a00d2714b0?tx_news_pi1%5Bformat%5D=ical&amp;type=9819&amp;cHash=c4b0a2df6740e9b7d2bcaab59a5befd1">Tilføj til kalender</a></p>
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														<p>1525-626</p>
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													Af
												

											
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														<span itemprop="name">Anna Katrine Mathiassen</span>
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									<p>Lucas Schneider will talk about gapless materials in electronic contact with superconductors acquire proximity-induced superconductivity in a region near the interface.</p>
<p>Here, we investigate the most miniature example of this so-called proximity effect on only a single quantum level of a surface state confined in a quantum corral on a superconducting substrate, built atom-by-atom using a scanning tunneling microscope. Whenever an eigenmode of the corral is pitched close to the Fermi energy by adjusting the corral’s size, a pair of particle-hole symmetric states is found to enter the superconductor’s gap. By comparison to a resonant level model of a spin-degenerate localized state coupled to a superconducting bath, we identify the in-gap states as scattering resonances theoretically predicted in 1972 which had so far eluded detection. We further show that the observed anticrossings of the in-gap states indicate proximity-induced pairing in the quantum corral’s eigenmodes.</p>
<p>Finally, we study how magnetic adatoms interact with the corral’s eigenmodes.</p>
								
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