@article{MTMT:34147324, title = {ac Josephson effect in a gate-tunable Cd 3 As 2 nanowire superconducting weak link}, url = {https://m2.mtmt.hu/api/publication/34147324}, author = {Haller, R. and Osterwalder, M. and Fülöp, Gergő and Ridderbos, J. and Jung, M. and Schönenberger, C.}, doi = {10.1103/PhysRevB.108.094514}, journal-iso = {PHYS REV B}, journal = {PHYSICAL REVIEW B}, volume = {108}, unique-id = {34147324}, issn = {2469-9950}, year = {2023}, eissn = {2469-9969}, orcid-numbers = {Haller, R./0000-0002-2939-3624; Ridderbos, J./0000-0001-7406-9586; Jung, M./0000-0003-1515-5913} } @article{MTMT:33733401, title = {Signatures of Gate-Driven Out-of-Equilibrium Superconductivity in Ta/InAs Nanowires}, url = {https://m2.mtmt.hu/api/publication/33733401}, author = {Elalaily, Tosson and Berke, Martin and Kedves, Máté and Fülöp, Gergő and Scherübl, Zoltán and Kanne, Thomas and Nygård, Jesper and Makk, Péter and Csonka, Szabolcs}, doi = {10.1021/acsnano.2c10877}, journal-iso = {ACS NANO}, journal = {ACS NANO}, volume = {17}, unique-id = {33733401}, issn = {1936-0851}, year = {2023}, eissn = {1936-086X}, pages = {5528-5535}, orcid-numbers = {Kedves, Máté/0000-0002-2057-4891} } @article{MTMT:33096845, title = {Parallel InAs nanowires for Cooper pair splitters with Coulomb repulsion}, url = {https://m2.mtmt.hu/api/publication/33096845}, author = {Kürtössy, Olivér and Scherübl, Zoltán and Fülöp, Gergő and Lukács, István Endre and Kanne, Thomas and Nygard, Jesper and Makk, Péter and Csonka, Szabolcs}, doi = {10.1038/s41535-022-00497-9}, journal-iso = {NPJ QUANTUM MATER}, journal = {NPJ QUANTUM MATERIALS}, volume = {7}, unique-id = {33096845}, abstract = {Hybrid nanostructures consisting of two parallel InAs nanowires connected by an epitaxially grown superconductor (SC) shell recently became available. Due to the defect-free SC-semiconductor interface and the two quasi-one-dimensional channels being close by, these platforms can be utilized to spatially separate entangled pairs of electrons by using quantum dots (QD) in the so-called Cooper pair splitting (CPS) process. The minimized distance between the QDs overcomes the limitations of single-wire-based geometries and can boost the splitting efficiency. Here we investigate CPS in such a device where strong inter-dot Coulomb repulsion is also present and studied thoroughly. We analyze theoretically the slight reduction of the CPS efficiency imposed by the Coulomb interaction and compare it to the experiments. Despite the competition between crossed Andreev reflection (CAR) and inter-wire capacitance, a significant CPS signal is observed indicating the dominance of the superconducting coupling. Our results demonstrate that the application of parallel InAs nanowires with epitaxial SC is a promising route for the realization of parafermionic states relying on enhanced CAR between the wires.}, keywords = {SUPERCONDUCTOR; Materials Science, Multidisciplinary; Physics, Applied; Quantum Science & Technology}, year = {2022}, eissn = {2397-4648}, orcid-numbers = {Lukács, István Endre/0000-0002-4985-4475} } @article{MTMT:32916679, title = {From Cooper pair splitting to nonlocal spectroscopy of a Shiba state}, url = {https://m2.mtmt.hu/api/publication/32916679}, author = {Scherübl, Zoltán and Fülöp, Gergő and Gramich, Jörg and Pályi, András and Schönenberger, Christian and Nygard, Jesper and Csonka, Szabolcs}, doi = {10.1103/PhysRevResearch.4.023143}, journal-iso = {PRRESEARCH}, journal = {PHYSICAL REVIEW RESEARCH}, volume = {4}, unique-id = {32916679}, abstract = {Cooper pair splitting (CPS) is a way to create spatially separated, entangled electron pairs. To this day, CPS is often identified in experiments as a spatial current correlation. However, such correlations can arise even in the absence of CPS, when a quantum dot is strongly coupled to the superconductor, and a subgap Shiba state is formed. Here, we present a detailed experimental characterization of those spatial current correlations, as the tunnel barrier strength between the quantum dot and the neighboring normal electrode is tuned. The correlation of the nonlocal signal and the barrier strength reveals a competition between CPS and the nonlocal probing of the Shiba state. We describe our experiment with a simple transport model and obtain the tunnel couplings of our device by fitting the model's prediction to the measured conductance correlation curve. Furthermore, we use our theory to extract the contribution of CPS to the nonlocal signal.}, keywords = {GROWTH; TRANSPORT; ENTANGLEMENT; ANDREEV BOUND-STATES}, year = {2022}, eissn = {2643-1564}, orcid-numbers = {Nygard, Jesper/0000-0002-4639-5314} } @article{MTMT:32747661, title = {Phase-dependent microwave response of a graphene Josephson junction}, url = {https://m2.mtmt.hu/api/publication/32747661}, author = {Haller, Roy and Fülöp, Gergő and Indolese, David and Ridderbos, Joost and Kraft, Rainer and Cheung, Luk Yi and Ungerer, Jann Hinnerk and Watanabe, Kenji and Taniguchi, Takashi and Beckmann, Detlef}, doi = {10.1103/PhysRevResearch.4.013198}, journal-iso = {PRRESEARCH}, journal = {PHYSICAL REVIEW RESEARCH}, volume = {4}, unique-id = {32747661}, year = {2022}, eissn = {2643-1564} } @article{MTMT:32541140, title = {Gate-Controlled Supercurrent in Epitaxial Al/InAs Nanowires}, url = {https://m2.mtmt.hu/api/publication/32541140}, author = {Elalaily, Tosson and Kürtössy, Olivér and Scherübl, Zoltán and Berke, Martin and Fülöp, Gergő and Lukács, István Endre and Kanne, Thomas and Nygård, Jesper and Watanabe, Kenji and Taniguchi, Takashi and Makk, Péter and Csonka, Szabolcs}, doi = {10.1021/acs.nanolett.1c03493}, journal-iso = {NANO LETT}, journal = {NANO LETTERS}, volume = {21}, unique-id = {32541140}, issn = {1530-6984}, year = {2021}, eissn = {1530-6992}, pages = {9684-9690}, orcid-numbers = {Lukács, István Endre/0000-0002-4985-4475; Watanabe, Kenji/0000-0003-3701-8119; Taniguchi, Takashi/0000-0002-1467-3105; Makk, Péter/0000-0001-7637-4672} } @article{MTMT:32242695, title = {Andreev Molecule in Parallel InAs Nanowires}, url = {https://m2.mtmt.hu/api/publication/32242695}, author = {Kürtössy, Olivér and Scherübl, Zoltán and Fülöp, Gergő and Lukács, István Endre and Kanne, Thomas and Nygård, Jesper and Makk, Péter and Csonka, Szabolcs}, doi = {10.1021/acs.nanolett.1c01956}, journal-iso = {NANO LETT}, journal = {NANO LETTERS}, volume = {21}, unique-id = {32242695}, issn = {1530-6984}, year = {2021}, eissn = {1530-6992}, pages = {7929-7937}, orcid-numbers = {Lukács, István Endre/0000-0002-4985-4475; Makk, Péter/0000-0001-7637-4672} } @article{MTMT:31286368, title = {Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field}, url = {https://m2.mtmt.hu/api/publication/31286368}, author = {Scherübl, Zoltán and Fülöp, Gergő and Moca, Pascu Catalin and Gramich, Jörg and Baumgartner, Andreas and Makk, Péter and Elalaily, Tosson and Schönenberger, Christian and Nygård, Jesper and Zaránd, Gergely Attila and Csonka, Szabolcs}, doi = {10.1038/s41467-020-15322-9}, journal-iso = {NAT COMMUN}, journal = {NATURE COMMUNICATIONS}, volume = {11}, unique-id = {31286368}, issn = {2041-1723}, year = {2020}, eissn = {2041-1723} } @article{MTMT:31171792, title = {Highly symmetric and tunable tunnel couplings in InAs/InP nanowire heterostructure quantum dots}, url = {https://m2.mtmt.hu/api/publication/31171792}, author = {Thomas, Frederick S and Baumgartner, Andreas and Gubser, Lukas and Jünger, Christian and Fülöp, Gergő and Nilsson, Malin and Rossi, Francesca and Zannier, Valentina and Sorba, Lucia and Schönenberger, Christian}, doi = {10.1088/1361-6528/ab5ce6}, journal-iso = {NANOTECHNOLOGY}, journal = {NANOTECHNOLOGY}, volume = {31}, unique-id = {31171792}, issn = {0957-4484}, year = {2020}, eissn = {1361-6528} } @article{MTMT:30910266, title = {Observation of spin–orbit coupling induced Weyl points in a two-electron double quantum dot}, url = {https://m2.mtmt.hu/api/publication/30910266}, author = {Scherübl, Zoltán and Pályi, András and Frank, György and Lukács, István Endre and Fülöp, Gergő and Fülöp, Bálint and Nygård, J. and Watanabe, K. and Taniguchi, T. and Zaránd, Gergely Attila and Csonka, Szabolcs}, doi = {10.1038/s42005-019-0200-2}, journal-iso = {COMM PHYS}, journal = {COMMUNICATIONS PHYSICS}, volume = {2}, unique-id = {30910266}, issn = {2399-3650}, year = {2019}, eissn = {2399-3650}, orcid-numbers = {Lukács, István Endre/0000-0002-4985-4475; Fülöp, Bálint/0000-0001-6853-2642} }