Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Agrait, N."'
Autor:
Castellanos-Gomez, A., Arramel, Wojtaszek, M., Smit, R. H. M., Tombros, N., Agraït, N., van Wees, B. J., Rubio-Bollinger, G.
Publikováno v:
Bolet\'in del Grupo Espa\~nol del Carb\'on, 25 pp.18-22 (2012)
We probe the local inhomogeneities of the electronic properties of graphene at the nanoscale using scanning probe microscopy techniques. First, we focus on the study of the electronic inhomogeneities caused by the graphene-substrate interaction in gr
Externí odkaz:
http://arxiv.org/abs/1210.4147
Publikováno v:
Phys. Rev. B 73, 075428 (2006)
The effect of electron-phonon interactions in the conductance through metallic atomic wires is theoretically analyzed. The proposed model allows to consider an atomic size region electrically and mechanically coupled to bulk electrodes. We show that
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511287
Autor:
Riquelme, J. J., de la Vega, L., Yeyati, A. Levy, Agrait, N., Martin-Rodero, A., Rubio-Bollinger, G.
Publikováno v:
Europhys. Lett., 70 (5), pp. 663-669 (2005)
We present an experimental determination of the conduction channel distribution in lead nanoscale contacts with total conductances ranging from 1 to 15 G0, where G0=2e2/h. It is found that even for contacts having a cross section much smaller than th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506017
We induce superconductivity by proximity effect in thin layers of gold and study the number of conduction channels which contribute to the current in one-atom contacts and atomic wires. The atomic contacts and wires are fabricated with a Scanning Tun
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303195
Autor:
Untiedt, C., Yanson, A. I., Grande, R., Rubio-Bollinger, G., Agrait, N., Vieira, S., Van Ruitenbeek, J. M.
Publikováno v:
Phys. Rev. B 66 (2002) 085418
Using a scanning tunneling microscope or mechanically controllable break junctions it has been shown that it is possible to control the formation of a wire made of single gold atoms. In these experiments an interatomic distance between atoms in the c
Externí odkaz:
http://arxiv.org/abs/cond-mat/0202349
Electronic transport at finite voltages in free-standing gold atomic chains of up to 7 atoms in length is studied at low temperatures using a scanning tunneling microscope (STM). The conductance vs voltage curves show that transport in these single-m
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110601
A scanning tunneling microscope (STM) supplemented with a force sensor is used to study the mechanical properties of a novel metallic nanostructure: a freely suspended chain of single gold atoms. We find that the bond strength of the nanowire is abou
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105277
Publikováno v:
Nature Vol. 395 (1998) 783-785
The continuing miniaturization of microelectronics raises the prospect of nanometre-scale devices with mechanical and electrical properties that are qualitatively different from those at larger dimensions. The investigation of these properties, and p
Externí odkaz:
http://arxiv.org/abs/cond-mat/9811093
Nanowires of lead between macroscopic electrodes are produced by means of an STM. Magnetic fields may destroy the superconductivity in the electrodes, while the wire remains in the superconducting state. The properties of the resulting microscopic Jo
Externí odkaz:
http://arxiv.org/abs/cond-mat/9804039
The shape of metallic constrictions of nanoscopic dimensions (necks) formed using a scanning tunneling microscope (STM) is shown to depend on the fabrication procedure. Submitting the neck to repeated plastic deformation cycles makes possible to obta
Externí odkaz:
http://arxiv.org/abs/cond-mat/9704146