<em>h</em>/<em>e</em> oscillations in interlayer transport of delafossites

doi:10.1126/science.aay8413

GSTDTAP > 气候变化

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
	2020-06-12
发表期刊	Science
出版年	2020
英文摘要	The wave nature of conducting electrons in solids can be revealed through interference effects. In layered materials, these effects are most often seen in in-plane transport. By contrast, Putzke et al. studied electronic transport perpendicular to the conductive layers in the ultraclean delafossites PdCoO2 and PtCoO2. When an in-plane magnetic field was applied, the electrical resistance exhibited periodic oscillations as a function of field magnitude. The findings can be explained through a model that requires that the electronic waves remain coherent over macroscopic distances. Science , this issue p. [1234][1] 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. [1]: /lookup/doi/10.1126/science.aay8413
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/274468
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Carsten Putzke,Maja D. Bachmann,Philippa McGuinness,et al. h/e oscillations in interlayer transport of delafossites[J]. Science,2020.
APA	Carsten Putzke.,Maja D. Bachmann.,Philippa McGuinness.,Elina Zhakina.,Veronika Sunko.,...&Philip J.W. Moll.(2020).h/e oscillations in interlayer transport of delafossites.Science.
MLA	Carsten Putzke,et al."h/e oscillations in interlayer transport of delafossites".Science (2020).