The above work was supported by the Centre for Doctoral Training in Condensed Matter Physics, funded by EPSRC Grant No. EP/L015544/1. B.U. was supported by the Hungarian National Research, Development… Click to show full abstract
The above work was supported by the Centre for Doctoral Training in Condensed Matter Physics, funded by EPSRC Grant No. EP/L015544/1. B.U. was supported by the Hungarian National Research, Development and Innovation Office under Contract No. OTKA K115632 and a BME Nanotechnology FIKP grant (Grant No. BME FIKP-NAT). G.C. gratefully acknowledges support from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No. 754510.
               
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