TY - JOUR
T1 - h/e oscillations in interlayer transport of delafossites
AU - Putzke, Carsten
AU - Bachmann, Maja D.
AU - McGuinness, Philippa
AU - Zhakina, Elina
AU - Sunko, Veronika
AU - Konczykowski, Marcin
AU - Oka, Takashi
AU - Moessner, Roderich
AU - Stern, Ady
AU - Koenig, Markus
AU - Khim, Seunghyun
AU - Mackenzie, Andrew P.
AU - Moll, Philip J. W.
N1 - We thank B. Ramshaw, R. Ilan, M. Fischer, A. Morpurgo, J. Schmalian, and L. Forro for helpful discussions. 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 project no. CRC-183. M.K. acknowledges support from the SIRIUS irradiation facility through project no. EMIR 2019 18-7099. Author contributions: C.P., M.D.B., P.M., E.Z., and M.K. fabricated the microstructures. V.S., E.Z., P.M., and M.K. performed the electron irradiation. S.K. grew the single crystals. C.P. and P.J.W.M. performed the transport measurements and data analysis. C.P., T.O., R.M., A.S., A.P.M, and P.J.W.M. interpreted the data. All authors were involved in designing the experiment and writing the manuscript.
PY - 2020/6/12
Y1 - 2020/6/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85086425225&partnerID=8YFLogxK
U2 - 10.1126/science.aay8413
DO - 10.1126/science.aay8413
M3 - مقالة
SN - 0036-8075
VL - 368
SP - 1234
EP - 1238
JO - Science
JF - Science
IS - 6496
ER -