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Autor:
Vasileva, G. Yu., Smirnov, D., Vasilyev, Yu. B., Nestoklon, M. O., Averkiev, N. S., Novikov, S., Kaya, I. I., Haug, R. J.
Publikováno v:
Appl. Phys. Lett. 110, 113104 (2017)
We have studied the electronic properties of epitaxial graphene devices patterned in a meander shape with the length up to a few centimeters and the width of few tens of microns. These samples show a pronounced dependence of the resistance on tempera
Externí odkaz:
http://arxiv.org/abs/1612.04222
Autor:
Smirnov, D., Vasileva, G. Yu., Rode, J. C., Belke, C., Vasilyev, Yu. B., Ivanov, Yu. L., Haug, R. J.
The influence of plasma etched sample edges on electrical transport and doping is studied. Through electrical transport measurements the overall doping and mobility are analyzed for mono- and bilayer graphene samples. As a result the edge contributes
Externí odkaz:
http://arxiv.org/abs/1605.03465
Publikováno v:
Nature Nanotech. 12, 218-222 (2017)
Feedback control of quantum mechanical systems is rapidly attracting attention not only due to fundamental questions about quantum measurements but also because of its novel applications in many fields in physics. Quantum control has been studied int
Externí odkaz:
http://arxiv.org/abs/1602.05466
Autor:
Vasileva, G. Yu., Smirnov, D., Ivanov, Yu. L., Vasilyev, Yu. B., Alekseev, P. S., Dmitriev, A. P., Gornyi, I. V., Kachorovskii, V. Yu., Titov, M., Narozhny, B. N., Haug, R. J.
Publikováno v:
Phys. Rev. B 93, 195430 (2016)
We report a nonsaturating linear magnetoresistance in charge-compensated bilayer graphene in a temperature range from 1.5 to 150 K. The observed linear magnetoresistance disappears away from charge neutrality ruling out the traditional explanation of
Externí odkaz:
http://arxiv.org/abs/1512.00667
We investigate the effect due to background impurities embedded in the region of two-dimensional electron gases to the magnetotransport. These impurities are achieved by homogeneously incorporating Si atoms in single quantum wells of high quality GaA
Externí odkaz:
http://arxiv.org/abs/1511.08046
We report on a Kondo correlated quantum dot connected to two-dimensional leads where we demonstrate the renormalization of the g-factor in the pure Zeeman case i.e, for magnetic fields parallel to the plane of the quantum dot. For the same system we
Externí odkaz:
http://arxiv.org/abs/1510.05805
Autor:
Vasileva, G. Yu., Alekseev, P. S., Vasilyev, Yu. B., Ivanov, Yu. L., Smirnov, D., Schmidt, H., Haug, R. J.
We present magnetotransport measurements at classical magnetic fields for three graphene monolayers with various levels of disorder. A square root magnetoresistance (SRMR) behavior is observed in one sample which has the characteristic sub-linear con
Externí odkaz:
http://arxiv.org/abs/1508.04009
Publikováno v:
Phys. Rev. B 94, 035442 (2016)
Electronic transport through a two-path triple-quantum-dot system with two source leads and one drain is studied. By separating the conductance of the two double dot paths, we are able to observe double dot and triple dot physics in transport and stu
Externí odkaz:
http://arxiv.org/abs/1507.03595
In high-mobility two-dimensional electron gases Landau levels are already formed at very small magnetic field values. Such two-dimensional electron gases show a huge negative magnetoresistance at low temperatures and an unexpected and very strong non
Externí odkaz:
http://arxiv.org/abs/1504.00555