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082 _ _ |a 530
100 1 _ |a Behner, Gerrit
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245 _ _ |a Superconducting diode effect in selectively grown topological insulator based Josephson junctions
260 _ _ |a Woodbury, NY
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500 _ _ |a Bavarian Ministry of Economic Affairs, Regional Development and Energy within Bavaria's High-Tech Agenda Project ”Bausteine für das Quantencomputing auf Basis Topologischer Materialien mit Experimentellen und Theoretischen Ansätzen” (Grant No. 07 02/686 58/1/21 1/22 2/23)
520 _ _ |a The Josephson diode effect, where the switching current magnitude depends on its direction, arises when both time-reversal and inversion symmetries are broken, often achieved by a combination of spin-orbit interaction and applied magnetic fields. Taking advantage of the strong spin-orbit coupling inherent in three-dimensional topological insulators, we study this phenomenon in Nb/Bi0.8⁢Sb1.2⁢Te3/Nb Josephson weak-link junctions. Under an in-plane magnetic field perpendicular to the current direction, we observe a pronounced Josephson diode effect with efficiencies up to 7%. A crucial component of this behavior is the nonsinusoidal current-phase relationship and an anomalous phase shift, which we attribute to the presence of a ballistic supercurrent component due to the surface states. These findings open up new avenues for harnessing and controlling the Josephson diode effect in topological material systems.
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536 _ _ |a DFG project G:(GEPRIS)491798118 - Magnetische topologische Isolatoren für robuste Majorana Zustände (491798118)
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700 1 _ |a Jalil, Abdur Rehman
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700 1 _ |a Grützmacher, Detlev
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700 1 _ |a Schäpers, Thomas
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773 _ _ |a 10.1103/gc7k-rn8q
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856 4 _ |y Restricted
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