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of 207
pro vyhledávání: '"Herrera W"'
Autor:
Pineda, R., Herrera, W.
This paper discusses the topological and transport properties of binary heterostructures of different topological materials. The creation of multilayer devices is an alternative to building synthetic topological materials. By adjusting the pattern of
Externí odkaz:
http://arxiv.org/abs/2306.08552
Autor:
Pineda, R., Herrera, W. J.
In this paper, we discuss the topological and transport properties of binary heterostructures of different topological materials. Using the Su-Schrieffer-Heeger model and the method of Green's functions, we calculate and characterize the edge states
Externí odkaz:
http://arxiv.org/abs/2205.02326
From a Lagrangian density for the Bogoliubov de Gennes equations in anisotropic superconductors, we find the momentum-energy tensor associated to the quasiparticles of the system. For this, we make infinitesimal translations on both space and time an
Externí odkaz:
http://arxiv.org/abs/1502.03577
Autor:
Herrmann, L. G., Burset, P., Herrera, W. J., Portier, F., Roche, P., Strunk, C., Yeyati, A. Levy, Kontos, T.
We investigate non-linear transport in a double quantum dot connected to two normal electrodes and a central superconducting finger. By this means, we perform a transport spectroscopy of such a system which implements a Cooper pair splitter. The non-
Externí odkaz:
http://arxiv.org/abs/1205.1972
Publikováno v:
Phys. Rev. B 85, 115411 2012
We show that a graphene pnp junction with a central superconducting electrode acts as a Veselago lens for incoming electrons by focusing them and their phase-conjugated counterpart (holes) into different points of the optical axis. This selective foc
Externí odkaz:
http://arxiv.org/abs/1204.2096
Publikováno v:
Phys. Rev. B 84, 115448 (2011)
We analyze microscopically a Cooper pair splitting device in which a central superconducting lead is connected to two weakly coupled normal leads through a carbon nanotube. We determine the splitting efficiency at resonance in terms of geometrical an
Externí odkaz:
http://arxiv.org/abs/1104.3130
Publikováno v:
Phys. Rev. B 80, 041402(R) (2009)
We show that interface bound states are formed at isolated graphene-superconductor junctions. These states arise due to the interplay of virtual Andreev and normal reflections taking place at these interfaces. Simple analytical expressions for their
Externí odkaz:
http://arxiv.org/abs/0907.2535
Thin films of silver containing 0.3 - 1.5 at % Fe have been prepared by vapor co-deposition. Depending on substrate temperature and iron concentration we could systematically follow the formation of nanometer size clusters of iron from initially dilu
Externí odkaz:
http://arxiv.org/abs/0808.0929
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