Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Egues, J. C."'
Autor:
Patlatiuk, T., Scheller, C. P., Hill, D., Tserkovnyak, Y., Egues, J. C., Barak, G., Yacoby, A., Pfeiffer, L. N., West, K. W., Zumbühl, D. M.
Publikováno v:
Phys. Rev. Lett. 125, 087701 (2020)
We perform momentum-conserving tunneling spectroscopy using a GaAs cleaved-edge overgrowth quantum wire to investigate adjacent quantum Hall edge states. We use the lowest five wire modes with their distinct wave functions to probe each edge state an
Externí odkaz:
http://arxiv.org/abs/2002.05301
Autor:
Fu, J. Y., Penteado, P. H., Candido, D. R., Ferreira, G. J., Pires, D. P., Bernardes, E., Egues, J. C.
Publikováno v:
Phys. Rev. B 101, 134416 (2020)
Effective spin-orbit (SO) Hamiltonians for conduction electrons in wurtzite heterostructures are lacking in the literature, in contrast to zincblende structures. Here we address this issue by deriving such an effective Hamiltonian valid for quantum w
Externí odkaz:
http://arxiv.org/abs/1911.03638
Publikováno v:
Phys. Rev. B 91, 115435 (2015)
We have recently shown [Phys. Rev. B {\bf 89}, 165314 (2014)] that a non--interacting quantum dot coupled to a one--dimensional topological superconductor and to normal leads can sustain a Majorana mode even when the dot is expected to be empty, \emp
Externí odkaz:
http://arxiv.org/abs/1412.1851
Autor:
Dettwiler, F., Fu, J., Mack, S., Weigele, P. J., Egues, J. C., Awschalom, D. D., Zumbühl, D. M.
The spin-orbit (SO) interaction couples electron spin and momentum via a relativistic, effective magnetic field. While conveniently facilitating coherent spin manipulation in semiconductors, the SO interaction also inherently causes spin relaxation.
Externí odkaz:
http://arxiv.org/abs/1403.3518
Publikováno v:
Phys. Rev. B 89, 165314 (2014)
We investigate quantum transport through a quantum dot connected to source and drain leads and side-coupled to a topological superconducting nanowire (Kitaev chain) sustaining Majorana end modes. Using a recursive Green's function approach, we determ
Externí odkaz:
http://arxiv.org/abs/1308.0092
Autor:
Seridonio, A. C., Leandro, S. C., Guessi, L. H., Siqueira, E. C., Souza, F. M., Vernek, E., Figueira, M. S., Egues, J. C.
We theoretically investigate the local density of states (LDOS) probed by a STM tip of ferromagnetic metals hosting a single adatom and a subsurface impurity. We model the system via the two-impurity Anderson Hamiltonian. By using the equation of mot
Externí odkaz:
http://arxiv.org/abs/1211.3406
Publikováno v:
Semicond. Sci. Technol. 27 (2012) 124007
The two-dimensional topological insulating phase has been experimentally discovered in HgTe quantum wells (QWs). The low-energy physics of two-dimensional topological insulators (TIs) is described by the Bernevig-Hughes-Zhang (BHZ) model, where the r
Externí odkaz:
http://arxiv.org/abs/1209.2313
Publikováno v:
Phys. Rev. B 84, 125439 (2011)
We theoretically investigate spin-polarized transport in a system composed of a ferromagnetic Scanning Tunneling Microscope (STM) tip coupled to an adsorbed atom (adatom) on a host surface. Electrons can tunnel directly from the tip to the surface or
Externí odkaz:
http://arxiv.org/abs/1106.4331
Publikováno v:
Phys. Rev. B 83, 205422 (2011)
We study the Kondo and transport properties of a quantum dot with a single magnetic Mn ion connected to metallic leads. By employing a numerical renormalization group technique we show that depending on the value of ferromagnetic coupling strength be
Externí odkaz:
http://arxiv.org/abs/1102.1154
Publikováno v:
Phys. Rev. B 78, 155303 (2008)
Using non-equilibrium Green functions we calculate the spin-polarized current and shot noise in a ferromagnet--quantum-dot--ferromagnet (FM-QD-FM) system. Both parallel (P) and antiparallel (AP) magnetic configurations are considered. Coulomb interac
Externí odkaz:
http://arxiv.org/abs/0802.0982