Graphene single-electron transistor as a spin sensor for magnetic adsorbates

González, Jorge Méndez; Delgado, Fernando; Fernández-Rossier, J.

doi:10.1103/physrevb.87.085433

Cited by 20 publications

(8 citation statements)

References 33 publications

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“…GQDs are a very new addition to the family of quantum dots and a great deal is left to explore their electronic and electrochemical properties. Graphene has been widely explored in field-effect transistors but GQDs are applied in single electron transistor (SET)based charge sensors [55][56][57]. SETs are newer switching devices that use controlled electron tunneling to amplify a current [58].…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Graphene Quantum Dots - From Emergence to Nanotheranostic Applications

Joshi¹,

Kundu²,

Sanghi³

et al. 2016

Smart Drug Delivery System

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Quantum dots are at the cutting edge of nanotechnology development. Due to their unique optical and physical properties, they have potential applications in many avenues of medicine and biotechnology. With the advancements in nano-sciences, novel applications of quantum dots are constantly being explored for drug delivery and bioimaging. Graphene quantum dots (GQDs) are nanoparticles of graphene with properties of quantum dots as well as graphene. GQDs have ignited remarkable research interest in the field of medicine and biology and are considered as well-suited candidates for nanotheranostic applications due to their excellent biocompatibility and tunable physicochemical properties. The promising emerging implications of GQD platforms for diagnostics and therapeutics advances are the basis of this chapter.

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Section: Electrochemical Propertiesmentioning

confidence: 99%

Graphene Quantum Dots - From Emergence to Nanotheranostic Applications

Joshi¹,

Kundu²,

Sanghi³

et al. 2016

Smart Drug Delivery System

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“…As a fact, being atomically thin maximizes proximity effects, making it an optimal material to grow on top of magnetic materials. Furthermore, the fabrication of high quality graphene electronic devices both at the micron and nanometer scale is absolutely well demonstrated [26][27][28] and its use as a magnetic sensor for magnetic adsorbates has been already tested experimentally 29,30 and studied theoretically 31 .…”

Section: Introductionmentioning

confidence: 99%

Electrical detection of individual skyrmions in graphene devices

2017

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We study a graphene Hall probe located on top of a magnetic surface as a detector of skyrmions, using as working principle the anomalous Hall effect produced by the exchange interaction of the graphene electrons with the non-coplanar magnetization of the skyrmion. We study the magnitude of the effect as a function of the exchange interaction, skyrmion size and device dimensions. Our calculations for multiterminal graphene nanodevices, working in the ballistic regime, indicate that for realistic exchange interactions a single skyrmion would give Hall voltages well within reach of the experimental state of the art. The proposed device could act as an electrical transducer that marks the presence of a single skyrmion in a nanoscale region, paving the way towards the integration of skyrmion-based spintronics and graphene electronics.

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“…One of its applications is related to their use in high-precision molecular and magnetic sensors, which requires robust states at well-defined energies. [1][2][3][4][5][6] In 2D electronics, the control of the electronic and magnetic properties can be achieved by specific point defects, such as vacancies, Stone-Wales defects and doping with ad-atoms, among others. [7][8][9][10][11] Previous theoretical works propose electron confinement by doping 2D graphene with hydrogen atoms, which is used to manufacture narrowed graphene ribbons, quantum dots or junctions without the need for cutting or etching the system.…”

Section: Introductionmentioning

confidence: 99%

Electron confinement induced by diluted hydrogen-like ad-atoms in graphene ribbons

González

Rosales

Pacheco

et al. 2015

Phys. Chem. Chem. Phys.

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We report the electronic properties of two-dimensional systems made of graphene nanoribbons, which are patterned with ad-atoms in two separated regions. Due to the extra electronic confinement induced by the presence of impurities, we find resonant levels, quasi-bound and impurity-induced localized states, which determine the transport properties of the system. Regardless of the ad-atom distribution in the system, we apply band-folding procedures to simple models and predict the energies and the spatial distribution of those impurity-induced states. We take into account two different scenarios: gapped graphene and the presence of randomly distributed ad-atoms in a low dilution regime. In both cases the defect-induced resonances are still detected. Our findings would encourage experimentalists to synthesize these systems and characterize their quasi-localized states by employing, for instance, scanning tunneling spectroscopy (STS). Additionally, the resonant transport features could be used in electronic applications and molecular sensing devices.

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Graphene single-electron transistor as a spin sensor for magnetic adsorbates

Cited by 20 publications

References 33 publications

Graphene Quantum Dots - From Emergence to Nanotheranostic Applications

Graphene Quantum Dots - From Emergence to Nanotheranostic Applications

Electrical detection of individual skyrmions in graphene devices

Electron confinement induced by diluted hydrogen-like ad-atoms in graphene ribbons

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