TY - JOUR AU - Sen, A. AU - Frank, György AU - Kolok, István Baksa AU - Danon, J. AU - Pályi, András TI - Classification and magic magnetic field directions for spin-orbit-coupled double quantum dots JF - PHYSICAL REVIEW B J2 - PHYS REV B VL - 108 PY - 2023 IS - 24 SN - 2469-9950 DO - 10.1103/PhysRevB.108.245406 UR - https://m2.mtmt.hu/api/publication/34446621 ID - 34446621 N1 - Department of Theoretical Physics, Institute of Physics, Budapest University of Technology and Economics, Muegyetem rkp. 3., Budapest, H-1111, Hungary Department of Physics, Norwegian University of Science and Technology, Trondheim, NO-7491, Norway MTA-BME Quantum Dynamics and Correlations Research Group, Muegyetem Rkp. 3., Budapest, H-1111, Hungary Export Date: 21 December 2023 LA - English DB - MTMT ER - TY - JOUR AU - Pályi, András AU - Frank, György AU - Pintér, Gergő TI - Születésszabályozás a szilárdtest-fizikában JF - FIZIKAI SZEMLE J2 - FIZIKAI SZEMLE VL - 73 PY - 2023 IS - 4 SP - 110 EP - 114 PG - 5 SN - 0015-3257 UR - https://m2.mtmt.hu/api/publication/34029320 ID - 34029320 LA - Hungarian DB - MTMT ER - TY - GEN AU - Guba, Zoltán AU - Frank, György AU - Pintér, Gergő AU - Pályi, András TI - Weyl points in ball-and-spring mechanical systems PY - 2023 UR - https://m2.mtmt.hu/api/publication/33688321 ID - 33688321 LA - English DB - MTMT ER - TY - GEN AU - Pintér, Gergő AU - Frank, György AU - Varjas, Dániel AU - Pályi, András TI - Birth Quota of Non-Generic Degeneracy Points PY - 2022 PG - 6 UR - https://m2.mtmt.hu/api/publication/32670011 ID - 32670011 LA - English DB - MTMT ER - TY - JOUR AU - Frank, György AU - Varjas, Dániel AU - Vrana, Péter AU - Pintér, Gergő AU - Pályi, András TI - Topological charge distributions of an interacting two-spin system JF - PHYSICAL REVIEW B J2 - PHYS REV B VL - 105 PY - 2022 IS - 3 SN - 2469-9950 DO - 10.1103/PhysRevB.105.035414 UR - https://m2.mtmt.hu/api/publication/32635397 ID - 32635397 N1 - Department of Theoretical Physics, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Exotic Quantum Phases Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary QuTech, Kavli Institute of Nanoscience, Delft University of Technology, Delft, 2600 GA, Netherlands Department of Physics, Stockholm University, AlbaNova University Center106 91, Sweden Institute of Mathematics, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Institute of Mathematics, Eötvös Loránd University, Pázmány Péter sétány 1/c, Budapest, H-1117, Hungary MTA-BME Lendület Topology and Correlation Research Group, Budapest University of Technology and Economics, Budapest, 1521, Hungary Export Date: 7 February 2022 AB - Quantum systems are often described by parameter-dependent Hamiltonians. Points in parameter space where two levels are degenerate can carry a topological charge. Here we theoretically study an interacting two-spin system where the degeneracy points form a nodal loop or a nodal surface in the magnetic parameter space, similarly to such structures discovered in the band structure of topological semimetals. Key results of our work are that (1) we determine the topological charge distribution along these degeneracy geometries and (2) we show that these nonpointlike degeneracy patterns can be obtained not only by fine-tuning but they can be stabilized by spatial symmetries. Since simple spin systems such as the one studied here are ubiquitous in condensed-matter setups, we expect that our findings, and the physical consequences of these nontrivial degeneracy geometries, are testable in experiments with quantum dots, molecular magnets, and adatoms on metallic surfaces. LA - English DB - MTMT ER - TY - GEN AU - Frank, György AU - Varjas, Dániel AU - Pintér, Gergő AU - Pályi, András TI - Weyl-point teleportation PY - 2021 PG - 6 UR - https://m2.mtmt.hu/api/publication/32635452 ID - 32635452 LA - English DB - MTMT ER - TY - JOUR AU - Frank, György AU - Scherübl, Zoltán AU - Csonka, Szabolcs AU - Zaránd, Gergely Attila AU - Pályi, András TI - Magnetic degeneracy points in interacting two-spin systems: Geometrical patterns, topological charge distributions, and their stability JF - PHYSICAL REVIEW B J2 - PHYS REV B VL - 101 PY - 2020 IS - 24 PG - 14 SN - 2469-9950 DO - 10.1103/PhysRevB.101.245409 UR - https://m2.mtmt.hu/api/publication/31385303 ID - 31385303 N1 - Funding Agency and Grant Number: National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program [2017-1.2.1-NKP-2017-00001]; OTKA by the New National Excellence Program of the Ministry of Human Capacities [124723, 127900, 132146]; AndQC FetOpen project; BME-Nanotechnology FIKP grant (BME FIKP-NAT); QuantERA SuperTop project Funding text: We thank G. Pinter, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 22 July 2020 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, 124723, 127900, 132146 Funding text 1: We thank G. Pintér, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 30 July 2020 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, 124723, 127900, 132146 Funding text 1: We thank G. Pintér, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 25 August 2020 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, 124723, 127900, 132146 Funding text 1: We thank G. Pintér, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 10 February 2021 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, 124723, 127900, 132146 Funding text 1: We thank G. Pintér, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 11 February 2021 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, 124723, 127900, 132146 Funding text 1: We thank G. Pintér, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 3 May 2021 Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 4 May 2021 Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 28 May 2021 Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 20 September 2021 Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, 124723, 127900, 132146 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding text 1: We thank G. Pintér, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Funding Agency and Grant Number: National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence ProgramNational Research, Development & Innovation Office (NRDIO) - Hungary [2017-1.2.1-NKP-2017-00001]; OTKA by the New National Excellence Program of the Ministry of Human Capacities [124723, 127900, 132146]; AndQC FetOpen project; BME-Nanotechnology FIKP grant (BME FIKP-NAT); QuantERA SuperTop project Funding text: We thank G. Pinter, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. Department of Physics, Budapest University of Technology and Economics, MTA-BME Momentum, Nanoelectronics Research Group, Budafoki út 8., Budapest, H-1111, Hungary Department of Theoretical Physics, MTA-BME Exotic Quantum Phases Momentum Research Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary MTA-BME Quantum Correlations Group, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Export Date: 23 September 2021 Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, 124723, 127900, 132146 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding text 1: We thank G. Pintér, P. Vrana, and H. Weng for useful discussions. This work was supported by the National Research Development and Innovation Office of Hungary within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), under OTKA Grants No. 124723, No. 127900, and No. 132146 by the New National Excellence Program of the Ministry of Human Capacities, by the BME-Nanotechnology FIKP grant (BME FIKP-NAT), by the QuantERA SuperTop project, and by the AndQC FetOpen project. LA - English DB - MTMT ER - TY - JOUR AU - Scherübl, Zoltán AU - Pályi, András AU - Frank, György AU - Lukács, István Endre AU - Fülöp, Gergő AU - Fülöp, Bálint AU - Nygård, J. AU - Watanabe, K. AU - Taniguchi, T. AU - Zaránd, Gergely Attila AU - Csonka, Szabolcs TI - Observation of spin–orbit coupling induced Weyl points in a two-electron double quantum dot JF - COMMUNICATIONS PHYSICS J2 - COMM PHYS VL - 2 PY - 2019 PG - 6 SN - 2399-3650 DO - 10.1038/s42005-019-0200-2 UR - https://m2.mtmt.hu/api/publication/30910266 ID - 30910266 LA - English DB - MTMT ER -