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.
%0 Journal Article
%1 C9RA04537F
%A Hrubý, Jakub
%A Santana, Vinicius T.
%A Kostiuk, Dmytro
%A Bouček, Martin
%A Lenz, Samuel
%A Kern, Michal
%A Šiffalovič, Peter
%A van Slageren, Joris
%A Neugebauer, Petr
%D 2019
%I The Royal Society of Chemistry
%J RSC Adv.
%K myown
%N 42
%P 24066-24073
%R 10.1039/C9RA04537F
%T A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method
%U http://dx.doi.org/10.1039/C9RA04537F
%V 9
%X 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.
@article{C9RA04537F,
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.},
added-at = {2020-10-12T12:54:01.000+0200},
author = {Hrubý, Jakub and Santana, Vinicius T. and Kostiuk, Dmytro and Bouček, Martin and Lenz, Samuel and Kern, Michal and Šiffalovič, Peter and van Slageren, Joris and Neugebauer, Petr},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2b323cac0accb1edcd9ed210f213b8a1f/michalkern},
doi = {10.1039/C9RA04537F},
interhash = {c33b81c875dcca43808cfa6277dfaee4},
intrahash = {b323cac0accb1edcd9ed210f213b8a1f},
journal = {RSC Adv.},
keywords = {myown},
number = 42,
pages = {24066-24073},
publisher = {The Royal Society of Chemistry},
timestamp = {2020-10-12T10:54:01.000+0200},
title = {A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method},
url = {http://dx.doi.org/10.1039/C9RA04537F},
volume = 9,
year = 2019
}