Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Borzenets, I. V."'
Autor:
Borzenets, I. V., Shim, J., Chen, J., Ludwig, A., Wieck, A., Tarucha, S., Sim, H. -S., Yamamoto, M.
Publikováno v:
Nature (London) 579, 210 (2020)
When a magnetic impurity exists in a metal, conduction electrons form a spin cloud that screens the impurity spin. This basic phenomenon is called the Kondo effect. Contrary to electric charge screening, the spin screening cloud occurs quantum cohere
Externí odkaz:
http://arxiv.org/abs/1906.08917
Autor:
Ke, C. T., Draelos, A. W., Seredinski, A., Wei, M. T., Li, H., Hernandez-Rivera, M., Watanabe, K., Taniguchi, T., Yamamoto, M., Tarucha, S., Bomze, Y., Borzenets, I. V., Amet, F., Finkelstein, G.
Publikováno v:
Phys. Rev. Research 1, 033084 (2019)
We investigate supercurrent interference patterns measured as a function of magnetic field in ballistic graphene Josephson junctions. At high doping, the expected $\Phi_{0}$-periodic "Fraunhofer" pattern is observed, indicating a uniform current dist
Externí odkaz:
http://arxiv.org/abs/1906.07935
Autor:
Wei, M. T., Draelos, A. W., Seredinski, A., Ke, C. T., Li, H., Mehta, Y., Watanabe, K., Taniguchi, T., Yamamoto, M., Tarucha, S., Finkelstein, G., Amet, F., Borzenets, I. V.
Publikováno v:
Phys. Rev. B 100, 121403 (2019)
We study a two-terminal graphene Josephson junction with contacts shaped to form a narrow constriction, less than 100nm in length. The contacts are made from type II superconducting contacts and able to withstand magnetic fields high enough to reach
Externí odkaz:
http://arxiv.org/abs/1904.11689
Autor:
Draelos, A. W., Silverman, A., Eniwaye, B., Arnault, E. G., Ke, C. T., Wei, M. T., Vlassiouk, I., Borzenets, I. V., Amet, F., Finkelstein, G.
Publikováno v:
Phys. Rev. B 99, 125427 (2019)
In this work, we report on hot carrier diffusion in graphene across large enough length scales that the carriers are not thermalized across the crystal. The carriers are injected into graphene at one site and their thermal transport is studied as a f
Externí odkaz:
http://arxiv.org/abs/1812.11711
Autor:
Borzenets, I. V., Amet, F., Ke, C. T., Draelos, A. W., Wei, M. T., Seredinski, A., Watanabe, K., Taniguchi, T., Bomze, Y., Yamamoto, M., Tarucha, S., Finkelstein, G
Publikováno v:
Phys. Rev. Lett. 117, 237002 (2016)
We investigate the critical current, $I_C$, of ballistic Josephson junctions made of encapsulated graphene/boron-nitride heterostructures. We observe a crossover from the short to the long junction regimes as the length of the device increases. In lo
Externí odkaz:
http://arxiv.org/abs/1604.07320
Autor:
Borzenets, I. V., Shimazaki, Y., Jones, G. F., Craciun, M. F., Russo, S., Yamamoto, Y., Tarucha, S.
We demonstrate high efficiency Cooper pair splitting in a graphene-based device. We utilize a true Y-shape design effectively placing the splitting channels closer together: graphene is used as the central superconducting electrode as well as QD outp
Externí odkaz:
http://arxiv.org/abs/1506.04597
Autor:
Borzenets, I. V., Coskun, U. C., Mebrahtu, H. T., Bomze, Yu. V., Smirnov, A. I., Finkelstein, G.
We examine the nature of the transitions between the normal and the superconducting branches of superconductor-graphene-superconductor Josephson junctions. We attribute the hysteresis between the switching (superconducting to normal) and retrapping (
Externí odkaz:
http://arxiv.org/abs/1212.6297
Autor:
Mebrahtu, H. T., Borzenets, I. V., Zheng, H., Bomze, Y. V., Smirnov, A. I., Florens, S., Baranger, H. U., Finkelstein, G.
Publikováno v:
Nature Physics 9, 732 (2013)
We investigate experimentally an exotic state of electronic matter obtained by fine-tuning to a quantum critical point (QCP), realized in a spin-polarized resonant level coupled to strongly dissipative electrodes. Several transport scaling laws near
Externí odkaz:
http://arxiv.org/abs/1212.3857
We fabricate superconductor-graphene-superconductor Josephson junctions with superconducting regions made of lead (Pb). The critical current through grapehene may be modulated by external magnetic field; the resulting Fraunhofer interference pattern
Externí odkaz:
http://arxiv.org/abs/1112.1987
Publikováno v:
Physical Review Letters 107, 137005 (2011)
We report on graphene-based Josephson junctions with contacts made from lead. The high transition temperature of this superconductor allows us to observe the supercurrent branch at temperatures up to $\sim 2$ K, at which point we can detect a small,
Externí odkaz:
http://arxiv.org/abs/1109.0769