h/e oscillations in interlayer transport of delafossites

Carsten Putzke; Maja D. Bachmann; Philippa McGuinness; Elina Zhakina; Veronika Sunko; Marcin Konczykowski; Takashi Oka; Roderich Moessner; Ady Stern; Markus König; Seunghyun Khim; Andrew P. Mackenzie; Philip J.W. Moll

doi:10.1126/science.aay8413

h/e oscillations in interlayer transport of delafossites

Carsten Putzke^*, Maja D. Bachmann, Philippa McGuinness, Elina Zhakina, Veronika Sunko, Marcin Konczykowski, Takashi Oka, Roderich Moessner, Ady Stern, Markus König, Seunghyun Khim, Andrew P. Mackenzie^*, Philip J.W. Moll^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

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.

Original language	English
Pages (from-to)	1234-1238
Number of pages	5
Journal	Science
Volume	368
Issue number	6496
DOIs	https://doi.org/10.1126/science.aay8413
Publication status	Published - 12 Jun 2020

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Putze_2020_Science_Delafossites_AAM
Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1126/science.aay8413
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@article{6089bbc472774f7885032fd2a03f4990,

title = "h/e oscillations in interlayer transport of delafossites",

abstract = "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.",

author = "Carsten Putzke and Bachmann, {Maja D.} and Philippa McGuinness and Elina Zhakina and Veronika Sunko and Marcin Konczykowski and Takashi Oka and Roderich Moessner and Ady Stern and Markus K{\"o}nig and Seunghyun Khim and Mackenzie, {Andrew P.} and Moll, {Philip J.W.}",

note = "Funding: This project was funded by the European Research Council (ERC) under the European Union{\textquoteright}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 W{\"u}rzburg-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.",

year = "2020",

month = jun,

day = "12",

doi = "10.1126/science.aay8413",

language = "English",

volume = "368",

pages = "1234--1238",

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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 - König, Markus

AU - Khim, Seunghyun

AU - Mackenzie, Andrew P.

AU - Moll, Philip J.W.

N1 - 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.

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 - https://arxiv.org/abs/1902.07331

U2 - 10.1126/science.aay8413

DO - 10.1126/science.aay8413

M3 - Article

C2 - 32527829

AN - SCOPUS:85086425225

SN - 0036-8075

VL - 368

SP - 1234

EP - 1238

JO - Science

JF - Science

IS - 6496

ER -

h/e oscillations in interlayer transport of delafossites

Abstract

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