Issue 42, 2019, Issue in Progress

A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method

Abstract

The scalability and stability of molecular qubits deposited on surfaces is a crucial step for incorporating them into upcoming electronic devices. Herein, we report on the preparation and characterisation of a molecular quantum bit, copper(II)dibenzoylmethane [Cu(dbm)2], deposited by a modified Langmuir–Schaefer (LS) technique onto a graphene-based substrate. A double LS deposition was used for the preparation of a few-layer-graphene (FLG) on a Si/SiO2 substrate with subsequent deposition of the molecules. Magnetic properties were probed by high-frequency electron spin resonance (HF-ESR) spectroscopy and found maintained after deposition. Additional spectroscopic and imaging techniques, such as Raman spectroscopy (RS), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and scanning electron microscopy (SEM) were performed to characterise the deposited sample. Our approach demonstrated the possibility to utilise a controlled wet-chemistry protocol to prepare an array of potential quantum bits on a disordered graphene-based substrate. The deployed spectroscopic techniques showed unambiguously the robustness of our studied system with a potential to fabricate large-scale, intact, and stable quantum bits.

Graphical abstract: A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method

Supplementary files

Article information

Article type
Paper
Submitted
17 Jun 2019
Accepted
25 Jul 2019
First published
02 Aug 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 24066-24073

A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method

J. Hrubý, V. T. Santana, D. Kostiuk, M. Bouček, S. Lenz, M. Kern, P. Šiffalovič, J. van Slageren and P. Neugebauer, RSC Adv., 2019, 9, 24066 DOI: 10.1039/C9RA04537F

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