04/2017Graphene burritos for magnetic sensing  

Rolled-up graphene nanostructures show a very large anisotropic magnetoresistance, a physical effect used in many magnetic sensing applications, such as compasses and traffic detection. We have demonstrated this for a layer of graphene rolled up to form a tube with open edges. The effect can be more than ten times higher than observed in conventional transition metal alloys. Read more ...  

01/2017Random Access Memory on a low energy diet  

Memory chips are among the most basic components in computers. The random access memory is where processors temporarily store their data. We demonstrate a first-of-its-kind room-temperature memory element that is based purely on antiferromagnetic magnetoelectric random access memory, and can be written by using an electric field instead of a current. This writing method dissipated no energy in the electrical resistance of the memory cell. At the same time, we show that the data can be read-out all-electrically even though the antiferromagnet is an electrical insulator. Read more ...  

11/2016New publication in 2D Materials 

We have put forward a new explanation for the generic presence of one-dimensional edge channels in two-dimensional materials. In a paper published in 2D Materials, we link the occurrence of these states in 2D insulators, such as phosphorene, and zero-gap semiconductors, graphene being the primary example, to a new topological quantity. These findings can be tested with local-probe experiments. Read more ...  

 

08/2016Our review paper is highlighted in JPhys+ 

Our review paper "Magnetism in curved geometries" was highlighted by the reviewers as being particularly significant to the community. The paper is featured in a blog post at JPhys+. The text of the highlight can be read here

 

08/2016New publication in Physical Review B Rapid Comm. 

The manipulation and control of the electron spin set fundamental challenges for the development of innovative solutions in quantum engineering. In our report, we uncover a fundamental entanglement between the electron spin degree of freedom and the geometry of the system in which the electrons reside. Taking the example of an elliptically deformed quantum ring with Rashba spin-orbit, we provide a proof-of-principle of an all-geometrical-and-electrical control of electron spin and quantum spin transport. Read more ... 

05/2016New publication in Nature Communications

The interaction of electric and thermal transport phenomena leads to the Seeback and Peltier thermoelectric effects. Here, we directly detect the Peltier effect in single and bilayer graphene, and show that it can be switched from heating to cooling by tuning the type and density of the charge carriers using a back gate. Read more ... 

12/2015New publication in Physical Review Letters

We prove that curvature effects in low-dimensional nanomaterials can promote the generation of topological states of matter by considering the paradigmatic example of quantum wires with Rashba spin-orbit coupling, which are bent in a nanoscale periodic serpentine structure. Our results suggest that the local curvature and the topology of the electronic states are inextricably intertwined in geometrically deformed nanomaterials. Read more ... 

08/2015New publication in Physical Review Letters: EDITORS' SUGGESTION

Antiferromagnets have the potential to revolutionize spintronics due to their inherently magnetic-field stable magnetic order. We introduce spinning-current anomalous Hall magnetometry opening the scope for magnetic phenomena that can go amiss otherwise. This provides new insights into the physics of application-relevant antiferromagnets. Read more ... 

 

07/2015New publication in Nature Communications

While X-ray tomography has already been successfully applied, its magnetic analog-magnetic X-ray tomography - although demanded for medical applications and in material design, was not available. We put forth the foundations of magnetic soft X-ray tomography and demonstrate its capabilities by reconstructing 3D spin textures of microscopic tubular architectures. Read more ...  

03/2015New publication in Physical Review B Rapid Comm.: EDITORS' SUGGESTION

Density functional theory calculations of the electronic properties of graphene-hexagonal indium telluride superlattices predicts two inequivalent geometrical structures that are almost degenerate in energy. These structures give rise to either gapped states in Kekule' phase or gapless states in reconstructed graphene Dirac cones. Read more ...

03/2015New publication in Nature Scientific Reports

Non-trivial topological magnetic states have been theoretically predicted and experimentally verified by imprinting non-collinear spin textures. Read more ..

11/2014New publication in Physical Review Letters: EDITORS' SUGGESTION

A 2D electron gas confined in nanotubes, formed by rolling up multilayer films of a non-magnetic semiconducting material, is predicted to exhibit strongly anisotropic magnetoresistance. Read more ...

 

11/2014CNTQC workshop in Salerno, Italy

The 1st CNTQC workshop will be held from May 14-15, 2015 in Salerno, Italy, at the Amalfi Coast. The workshop will focus on the topic "Top-Spin: Spin and Topological Phenomena in Nanostructures" and will be the first of a series of events organized in the frame of the EU FP7-ICT FET Young Explorers "CNTQC: Curved Nanomembranes for Topological Quantum Computation", coordinated by Dr. Carmine Ortix. Details of the workshop can be found at http://top.spin.cnr.it/.

 

06/2014CNTQC kick-off meeting at the IFW Dresden

The CNTQC kick-off meeting in June ensured a smooth start of the project. All project partners met and discussed the aims of the project, reviewed all work packages, deliverables and milestones necessary for a successful completion of the project. Workshop 1 was agreed to be held in Salerno on the topic "Top-Spin: Spin and Topological Phenomena in Nanostructures" in May 2015.

 

09/2013CNTQC negotiation meeting in Brussels
The negotiating EC Project Officer got together with all project partners of the consortium in order to come to a satisfactory conclusion of the negotiations and the completion of the formal selection process. The negotiation meeting in Brussels successfully paved the way towards the start of the CNTQC project in June 2014.   
 
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Matias Garcia



The project CNTQC acknowledges the financial support of the Future and Emerging Technologies (FET) programme within the
Seventh Framework Programme for Research of the European Commission, under FET-Open grant number: 618083.