| Records |
| Author |
Barbier, M.; Vasilopoulos, P.; Peeters, F.M.; Pereira, J.M. |
| Title |
Band structure, density of states, and transmission in graphene bilayer superlattices |
Type |
A1 Journal article |
| Year |
2009 |
Publication |
AIP conference proceedings |
Abbreviated Journal |
|
| Volume |
1199 |
Issue |
|
Pages |
547-548 |
| Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
| Abstract |
The energy spectrum and density of states of graphene bilayer superlattices (SLs) are evaluated. We take into account doping and/or gating of the layers as well as tunnel coupling between them. In addition, we evaluate the transmission through such SLs and through single or double barriers. The transmission exhibits a strong dependence on the direction of the incident wave vector. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
New York |
Editor |
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| Language |
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Wos |
000281590800258 |
Publication Date |
2010-01-15 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record; WoS full record |
| Impact Factor |
|
Times cited  |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ lucian @ c:irua:84893 |
Serial |
217 |
| Permanent link to this record |
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| |
| Author |
Pereira, J.M., Jr.; Mlinar, V.; Peeters, F.M.; Vasilopoulos, P. |
| Title |
Graphene-based quantum wires |
Type |
P1 Proceeding |
| Year |
2007 |
Publication |
AIP conference proceedings
T2 – 28th International Conference on the Physics of Semiconductors (ICPS-28), JUL 24-28, 2006, Vienna, AUSTRIA |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
721-722 |
| Keywords |
P1 Proceeding; Condensed Matter Theory (CMT) |
| Abstract |
We investigate the properties of carriers in graphene-based quantum wires created by potential barriers, by means of analytical and numerical calculations. We obtain expressions for the energy spectrum as a function of barrier height, well width and linear momentum along the wire. The results demonstrate a direction-dependent resonant transmission across the potential well. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
New York |
Editor |
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| Language |
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Wos |
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Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
893 |
Series Issue |
|
Edition |
|
| ISSN |
978-0-7354-0397-0; 0094-243x |
ISBN |
|
Additional Links |
UA library record; WoS full record; |
| Impact Factor |
|
Times cited |
|
Open Access |
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| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ lucian @ c:irua:103601 |
Serial |
1369 |
| Permanent link to this record |
| |
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| |
| Author |
Wang, X.F.; Vasilopoulos, P.; Peeters, F.M. |
| Title |
Influence of spin-orbit interaction on the magnetotransport of a periodically modulated two-dimensional electron gas |
Type |
A1 Journal article |
| Year |
2004 |
Publication |
International journal of modern physics: B: condensed matter physics, statistical physics, applied physics
T2 – 16th International Conference on High Magnetic Fields in Semiconductor, Physics, AUG 02-06, 2004, Florida State Univ, NHMFL, Tallahassee, FL |
Abbreviated Journal |
Int J Mod Phys B |
| Volume |
18 |
Issue |
27-29 |
Pages |
3653-3656 |
| Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
| Abstract |
Transport properties of a two-dimensional electron gas (2DEG) are studied in the presence of a normal magnetic field B, of a weak one-dimensional (1D) periodic potential modulation V(x) = V(0)cos(Kx), and of the Rashba spin-orbit interaction (SOI) of strength a. For V(x) = 0 the SOI mixes the up and down spin states of neighboring Landau levels into two, unequally spaced energy branches. For V(x) not equal 0 these levels broaden into bands and their bandwidths oscillate with B. The n-th level bandwidth of each series vanishes at different values of B. Relative to the ID-modulated 2DEG without SOI and one flat-band condition, there are two flat-band conditions that depend on a and the transport coefficients can change considerably. For weak a the Weiss oscillations show beating patterns while for strong a the Shubnikov-de Haas ones axe split in two. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
Singapore |
Editor |
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| Language |
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Wos |
000227140200040 |
Publication Date |
2005-04-12 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0217-9792;1793-6578; |
ISBN |
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Additional Links |
UA library record; WoS full record |
| Impact Factor |
0.736 |
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: 0.736; 2004 IF: 0.361 |
| Call Number |
UA @ lucian @ c:irua:103199 |
Serial |
1633 |
| Permanent link to this record |
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| |
| Author |
Zarenia, M.; Vasilopoulos, P.; Pourtolami, N.; Peeters, F.M. |
| Title |
Landau-level dispersion and the quantum Hall plateaus in bilayer graphene |
Type |
P1 Proceeding |
| Year |
2013 |
Publication |
AIP conference proceedings |
Abbreviated Journal |
|
| Volume |
1566 |
Issue |
|
Pages |
275-276 |
| Keywords |
P1 Proceeding; Condensed Matter Theory (CMT) |
| Abstract |
We study the quantum Hall effect (QHE) in bilayer graphene using the Kubo-Greenwood formula. At zero temperature the Hall conductivity sigma(yx) is given by sigma(yx) – 4(N + 1)e(2)/h with N the index of the highest occupied Landau level (LL). Including the dispersion of the LLs and their width, due to e. g. scattering by impurities, produces the plateau of the n = 0 LL in agreement with experimental results on doped samples and similar theoretical results on single-layer graphene plateaus widen with impurity concentration. Further, the evaluated resistivity rho(xx) exhibits a strong, oscillatory dependence on the electron concentration. Explicit results are obtained for delta-function impurities. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
New York |
Editor |
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| Language |
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Wos |
000331793000137 |
Publication Date |
2014-01-03 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record; WoS full record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
; This work was supported by the Flemish Science Foundation (FWO-Vl), the European Science Foundation (project CONGRAN) and the Canadian NSERC Grant No. OGP0121756. ; |
Approved |
Most recent IF: NA |
| Call Number |
UA @ lucian @ c:irua:115871 |
Serial |
1770 |
| Permanent link to this record |
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| |
| Author |
Vasilopoulos, P.; Wang, X.F.; Peeters, F.M.; Chowdhury, S.; Long, A.R.; Davies, J.H. |
| Title |
Magneto resistance oscillations in a modulated 2DEG periodic in the ratio h/e to flux per unit cell |
Type |
A1 Journal article |
| Year |
2004 |
Publication |
Physica. E: Low-dimensional systems and nanostructures
T2 – 15th International Conference on Electronic Properties of, Two-Dimensional Systems (EP2DS-15), JUL 14-18, 2003, Nara, JAPAN |
Abbreviated Journal |
Physica E |
| Volume |
22 |
Issue |
1-3 |
Pages |
389-393 |
| Keywords |
A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT) |
| Abstract |
Transport properties of the 2DEG are studied in the presence of a normal magnetic field B and of a weak, two-dimensional periodic potential modulation. A tight-binding treatment has shown that each Landau level splits into several subbands with exponentially small gaps between them. Assuming the latter are closed due to disorder gives analytical wave functions and simplifies the evaluation of the magnetoresistance tensor p(muv) The relative phase of the oscillations in p(xx) and p(yy) depends on the modulation strengths and periods. For short periods less than or equal to 100 nm, in addition to the Weiss oscillations, the collisional contribution to the conductivity and the corresponding resistivity contribution show prominent peaks when one flux quantum h/e passes through an integral number of unit cells in good agreement with experiments. For periods 300-400 nm long used in early experiments, these peaks occur at fields 10-25 times smaller than those of the Weiss oscillations and are not resolved. (C) 2003 Elsevier B.V. All rights reserved. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
North-Holland |
Place of Publication |
Amsterdam |
Editor |
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| Language |
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Wos |
000221140800094 |
Publication Date |
2004-02-10 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1386-9477; |
ISBN |
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Additional Links |
UA library record; WoS full record |
| Impact Factor |
2.221 |
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: 2.221; 2004 IF: 0.898 |
| Call Number |
UA @ lucian @ c:irua:104107 |
Serial |
1911 |
| Permanent link to this record |
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| |
| Author |
Molnar, B.; Vasilopoulos, P.; Peeters, F.M. |
| Title |
Square-wave conductance through a chain of rings due to spin-orbit interaction |
Type |
P1 Proceeding |
| Year |
2005 |
Publication |
AIP conference proceedings |
Abbreviated Journal |
|
| Volume |
772 |
Issue |
|
Pages |
1335-1336 |
| Keywords |
P1 Proceeding; Condensed Matter Theory (CMT) |
| Abstract |
We study ballistic electron transport through a finite chain of quantum circular rings in the presence of spin-orbit interaction (SOI) of strength alpha. The transmission and reflection coefficients for a single ring, obtained analytical lylead to the conductance for a chain of rings as a function of alpha and of the wave vector k of the incident electron. Due to destructive spin interferences the chain can be totaly opaque for certain ranges of k the width of which depends on the value of alpha. A periodic modulation of a widens up the gaps considerably and produces a nearly binary conductance output. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
New York |
Editor |
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| Language |
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Wos |
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Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0094-243x |
ISBN |
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Additional Links |
UA library record; WoS full record; |
| Impact Factor |
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Times cited |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ lucian @ c:irua:94771 |
Serial |
3113 |
| Permanent link to this record |
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| |
| Author |
Xu, W.; Vasilopoulos, P.; Das, M.P.; Peeters, F.M. |
| Title |
Self-consistent g* factor and spin-split Landau levels in strong magnetic fields and at low temperatures |
Type |
P3 Proceeding |
| Year |
1995 |
Publication |
|
Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
743-746 |
| Keywords |
P3 Proceeding; Condensed Matter Theory (CMT) |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
World Scientific |
Place of Publication |
Singapore |
Editor |
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| Language |
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Wos |
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Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
MATERIALS SCIENCE, MULTIDISCIPLINARY 96/271 Q2 # |
| Call Number |
UA @ lucian @ c:irua:12203 |
Serial |
2974 |
| Permanent link to this record |
