h / e oscillations in interlayer transport of delafossites
| Autor: | Carsten Putzke, Takashi Oka, Ady Stern, Marcin Konczykowski, Andrew P. Mackenzie, Philip J. W. Moll, Seunghyun Khim, Maja D. Bachmann, Markus König, Roderich Moessner, Philippa McGuinness, Elina Zhakina, Veronika Sunko |
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| Přispěvatelé: | Ecole Polytechnique Fédérale de Lausanne (EPFL), Max Planck Institute for Chemical Physics of Solids (CPfS), Max-Planck-Gesellschaft, SUPA School of Physics and Astronomy [University of St Andrews], University of St Andrews [Scotland]-Scottish Universities Physics Alliance (SUPA), Laboratoire des Solides Irradiés (LSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Max Planck Institute for the Physics of Complex Systems (MPI-PKS), Weizmann Institute of Science [Rehovot, Israël], This project was funded by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant no. 715730, MiTopMat), European Research Council (Project LEGOTOP), University of St Andrews. School of Physics and Astronomy, University of St Andrews. Condensed Matter Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Magnetoresistance TK growth T-NDAS interference FOS: Physical sciences 02 engineering and technology Electron 01 natural sciences Strongly correlated electrons TK Electrical engineering. Electronics Nuclear engineering crystal Magnetic flux quantum Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences [CHIM]Chemical Sciences 010306 general physics Wave function Quantum QC Condensed Matter - Materials Science Mesoscopic physics Multidisciplinary Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Oscillation Materials Science (cond-mat.mtrl-sci) pdcoo2 021001 nanoscience & nanotechnology QC Physics aharonov-bohm oscillations conductivity 0210 nano-technology Coherence (physics) |
| Zdroj: | Science Science, 2020, 368 (6496), pp.1234-1238. ⟨10.1126/science.aay8413⟩ Science, American Association for the Advancement of Science, 2020, 368 (6496), pp.1234-1238. ⟨10.1126/science.aay8413⟩ |
| ISSN: | 0036-8075 1095-9203 |
| DOI: | 10.1126/science.aay8413⟩ |
| Popis: | Funding: This project was funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant no. 715730, MiTopMat) and also was supported by the Max Planck Society. A.P.M. and R.M. acknowledge support from the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter (EXC 2147). M.D.B., P.M., and V.S. acknowledge studentship funding from the EPSRC under grant no. EP/L015110/1. A.S. was supported by the Israel Science Foundation, the European Research Council (Project LEGOTOP), and the DFG through projectno.CRC-183. M.K. acknowledges support from the SIRIUS irradiation facility through project no. EMIR 2019 18-7099. Microstructures can be carefully designed to reveal the quantum phase of the wave-like nature of electrons in a metal. Here, we report phase-coherent oscillations of out-of-plane magnetoresistance in the layered delafossites PdCoO2 and PtCoO2 The oscillation period is equivalent to that determined by the magnetic flux quantum, h/e, threading an area defined by the atomic interlayer separation and the sample width, where h is Planck's constant and e is the charge of an electron. The phase of the electron wave function appears robust over length scales exceeding 10 micrometers and persisting up to temperatures of T > 50 kelvin. We show that the experimental signal stems from a periodic field modulation of the out-of-plane hopping. These results demonstrate extraordinary single-particle quantum coherence lengths in delafossites. Postprint |
| Databáze: | OpenAIRE |
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