Delfanazari, K., Serra, L., Ma, P., Farrer, I., Ritchie, D. A., Joyce, H. J., Kelly, M. J. and Smith, C. G. (2020) Hybrid quantum circuits in vertical magnetic fields. APS March Meeting 2020, Denver, Colorado, USA, 2-6 March 2020.
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Publisher's URL: https://meetings.aps.org/Meeting/MAR20/Session/R60.3
Abstract
Topological superconductors, that host Majorana zero modes and parafermions, can also be realized at the interface of superconductivity and the quantum Hall states in hybrid superconductor-semiconductor devices. Here, we present (i) two types of artificially engineered hybrid Josephson circuits fabrication methods, and (ii) sub-Kelvin temperature- dependent transport measurements at low and high magnetic fields B. We experimentally demonstrate that the 2D Josephson junctions and field-effect transistors under vertical magnetic fields show (i) an unusual magnetoconductance oscillations together with asymmetric dI/dV curves at B < 100 mT, (ii) Superconducting correlation on quantum Hall states at B up to 6 T, respectively. Our experimental results are qualitatively explained by a model considering the trivial and topological phase transitions in hybrid 2D Josephson junctions in vertical fields.
Item Type: | Conference or Workshop Item |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Delfanazari, Dr Kaveh |
Authors: | Delfanazari, K., Serra, L., Ma, P., Farrer, I., Ritchie, D. A., Joyce, H. J., Kelly, M. J., and Smith, C. G. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
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