Zobrazeno 1 - 10
of 56
pro vyhledávání: '"S N Evangelou"'
Autor:
S. N. Evangelou, Peter Markos
Publikováno v:
Annalen der Physik. 508:526-532
We study the electronic transport properties of mutually connected wires with loops in a “spaghetti”—like morphology by transfer matrix scaling methods. We obtain the conductance of the system and show the existence of an Anderson metal-insulat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f505fdca6e1cba7360b2c3fbd9616879
https://doi.org/10.1002/andp.2065080604
https://doi.org/10.1002/andp.2065080604
Autor:
S. N. Evangelou
Publikováno v:
Physica B: Condensed Matter. 296:62-65
The statistical description of energy levels in quantum systems brings together the areas of mesoscopic physics and chaos. We show numerically fingerprints of chaos in the spectral statistics of metallic disordered systems and chaotic billiards. At t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97bab46f916eb833ab8dc5a5b8f0e171
https://doi.org/10.1016/s0921-4526(00)00780-8
https://doi.org/10.1016/s0921-4526(00)00780-8
Autor:
S. N. Evangelou, Jean-Louis Pichard
Publikováno v:
Physical Review Letters. 84:1643-1646
We study the quasiperiodic Harper's model in order to give further support for a possible universality of the critical spectral statistics. At the mobility edge we numerically obtain a scale-invariant distribution of the bands $S$, which is closely d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::057ea57e5d6eda964b6ba1629e990e07
https://doi.org/10.1103/physrevlett.84.1643
https://doi.org/10.1103/physrevlett.84.1643
Publikováno v:
Physics Letters A. 253:322-326
We obtain analytically a continuum of one-dimensional ballistic extended states in a two-dimensional disordered system, which consists of compactly coupled random and pure square lattices. The extended states give a marginal metallic phase with finit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc5c427b97129600036b95967e2b1af6
https://doi.org/10.1016/s0375-9601(99)00089-4
https://doi.org/10.1016/s0375-9601(99)00089-4
Publikováno v:
Journal of Physics: Condensed Matter. 10:1065-1077
We have studied the electronic transport properties of various topological mesoscopic rings which consist of several variable-size chains joined at their ends to form ideal single-channel leads. An enhancement of the transmission coefficient is obtai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ea43c05031c46599e7412bb52c9044c
https://doi.org/10.1088/0953-8984/10/5/014
https://doi.org/10.1088/0953-8984/10/5/014
Publikováno v:
Physical Review B. 56:4778-4785
We obtain exact analytical expressions for the electronic transport through a multichain system, also in the presence of magneto- and electrostatic fields. The geometrical structure of the electrodes is found to cause a splitting of the conduction ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8138dccc1294d984b819047dd67a5a33
https://doi.org/10.1103/physrevb.56.4778
https://doi.org/10.1103/physrevb.56.4778
Publikováno v:
Journal of Physics: Condensed Matter. 9:4823-4830
We present a theoretical study for the quantum transport of carriers in a random semiconductor polymer poly(p-phenylene vinylene) (PPV) chain with the benzoid rings partially replaced by quinoid rings. A renormalization approach maps the polymeric ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d76b63fa69daffe84f217d438d147eb6
https://doi.org/10.1088/0953-8984/9/23/006
https://doi.org/10.1088/0953-8984/9/23/006
Publikováno v:
Journal of Physics: Condensed Matter. 8:L605-L610
We obtain by transfer matrix scaling methods the Anderson metal - insulator phase diagram for a random electronic tight binding Hamiltonian, modelling a `spaghetti' of random polymer chains having randomly placed cross-links J with concentration c. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a0937d592b15d79c207656607fc0119
https://doi.org/10.1088/0953-8984/8/41/002
https://doi.org/10.1088/0953-8984/8/41/002
Autor:
Katomeris Gn, S. N. Evangelou
Publikováno v:
Physical Review B. 54:8474-8478
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6c267f2c313310624ba90aba334aebb
https://doi.org/10.1103/physrevb.54.8474
https://doi.org/10.1103/physrevb.54.8474
Autor:
S. N. Evangelou, G N Katomeris
Publikováno v:
Journal of Physics A: Mathematical and General. 29:2379-2387
We present results for the density of states and the statistics of the energy levels in a random tight binding matrix ensemble defined on a disordered two-dimensional Sierpinski gasket. In the absence of disorder the nearest level spacing distributio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a944536e832b137ace739b08a4bd29d6
https://doi.org/10.1088/0305-4470/29/10/017
https://doi.org/10.1088/0305-4470/29/10/017