Ultralong Spin Lifetime in Light Alkali Atom Doped Graphene

Márkus BG, Szirmai P, Edelthalhammer K, Eckerlein P, Hirsch A, Hauke F, Nemes NM, Chacón-Torres JC, Náfrádi B, Forró L, Pichler T, Simon F (2020)

Publication Type: Journal article

Publication year: 2020

Journal

ACS nano American Chemical Society

Book Volume: 14

Pages Range: 7492-7501

Journal Issue: 6

DOI: 10.1021/acsnano.0c03191

Abstract

Today's great challenges of energy and informational technologies are addressed with a singular compound, Li- and Na-doped few-layer graphene. All that is impossible for graphite (homogeneous and high-level Na doping) and unstable for single-layer graphene works very well for this structure. The transformation of the Raman G line to a Fano line shape and the emergence of strong, metallic-like electron spin resonance (ESR) modes attest the high level of graphene doping in liquid ammonia for both kinds of alkali atoms. The spin-relaxation time in our materials, deduced from the ESR line width, is 6-8 ns, which is comparable to the longest values found in spin-transport experiments on ultrahigh-mobility graphene flakes. This could qualify our material as a promising candidate in spintronics devices. On the other hand, the successful sodium doping, this being a highly abundant metal, could be an encouraging alternative to lithium batteries.

Authors with CRIS profile

Konstantin Edelthalhammer Lehrstuhl für Organische Chemie II Andreas Hirsch Lehrstuhl für Organische Chemie II Frank Hauke Lehrstuhl für Organische Chemie II

Involved external institutions

École Polytechnique Fédérale de Lausanne (EPFL) CH Switzerland (CH) Universidad Complutense de Madrid (UCM) ES Spain (ES) Universität Wien / University of Vienna AT Austria (AT) Budapest University of Technology and Economics (BME) / Budapesti Műszaki és Gazdaságtudományi Egyetem HU Hungary (HU) Universidad de Investigación de Tecnología Experimental (Yachay Tech) EC Ecuador (EC)

How to cite

APA:

Márkus, B.G., Szirmai, P., Edelthalhammer, K., Eckerlein, P., Hirsch, A., Hauke, F.,... Simon, F. (2020). Ultralong Spin Lifetime in Light Alkali Atom Doped Graphene. ACS nano, 14(6), 7492-7501. https://dx.doi.org/10.1021/acsnano.0c03191

MLA:

Márkus, B. G., et al. "Ultralong Spin Lifetime in Light Alkali Atom Doped Graphene." ACS nano 14.6 (2020): 7492-7501.

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