| Home | << 1 >> |
|
| Record | |||||
|---|---|---|---|---|---|
| Author | Petrovic, M.D.; Peeters, F.M. | ||||
| Title | Quantum transport in graphene Hall bars : effects of side gates | Type | A1 Journal article | ||
| Year | 2017 | Publication | Solid state communications | Abbreviated Journal | Solid State Commun |
| Volume | 257 | Issue | 257 | Pages | 20-26 |
| Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
| Abstract | Quantum electron transport in side-gated graphene Hall bars is investigated in the presence of quantizing external magnetic fields. The asymmetric potential of four side-gates distorts the otherwise flat bands of the relativistic Landau levels, and creates new propagating states in the Landau spectrum (i.e. snake states). The existence of these new states leads to an interesting modification of the bend and Hall resistances, with new quantizing plateaus appearing in close proximity of the Landau levels. The electron guiding in this system can be understood by studying the current density profiles of the incoming and outgoing modes. From the fact that guided electrons fully transmit without any backscattering (similarly to edge states), we are able to analytically predict the values of the quantized resistances, and they match the resistance data we obtain with our numerical (tight-binding) method. These insights in the electron guiding will be useful in predicting the resistances for other side-gate configurations, and possibly in other system geometries, as long as there is no backscattering of the guided states. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | New York, N.Y. | Editor | ||
| Language | Wos | 000401101400005 | Publication Date | 2017-04-02 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0038-1098 | ISBN | Additional Links  |
UA library record; WoS full record | |
| Impact Factor | 1.554 | Times cited | Open Access | ||
| Notes | ; This work was supported by the Methusalem programme of the Flemish government. One of us (F. M. Peeters) acknowledges correspondence with K. Novoselov. ; | Approved | Most recent IF: 1.554 | ||
| Call Number | UA @ lucian @ c:irua:143761 | Serial | 4604 | ||
| Permanent link to this record | |||||