Peierls instability in a mesoscopic ring threaded by a magnetic flux

1992 ◽  
Vol 45 (7) ◽  
pp. 3499-3506 ◽  
Author(s):  
B. Nathanson ◽  
O. Entin-Wohlman ◽  
B. Mühlschlegel
Keyword(s):  
Magnetic Flux ◽  
Peierls Instability ◽  
Mesoscopic Ring

TRANSPORT THROUGH INTERACTING AHARONOV–BOHM–CASHER INTERFEROMETERS

2011 ◽  
Vol 25 (22) ◽  
pp. 3019-3025
Author(s):  
QING-QIANG XU ◽  
BEN-LING GAO ◽  
SHI-JIE XIONG
Keyword(s):  
Magnetic Flux ◽  
Electronic Transport ◽  
Transport Processes ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Spin Filter ◽  
Rashba Spin ◽  
Mesoscopic Ring ◽  
Universal Regime ◽  
Aharonov Bohm

We investigate the transport properties of an interacting ring threaded by a magnetic flux and with Rashba spin-orbit coupling, based on a recently developed functional renormalized group technique. In the calculations of the electronic transport processes, the Coloumb On-site interactions are taken into account. For an interacting ring connected to two leads, we find that (i) for ΦAC = 0, the behavior of transmission zero at ΦAB = π is generic for the universal regime; (ii) for certain ΦAC and ΦAB, one can use the mesoscopic ring as spin filter even in the presence of the local interaction in the ring.

Energy Spectrum and Persistent Currents in Finite-Width Mesoscopic Ring with Radial Potential Barrier Threading a Magnetic Flux Through its Hole

1998 ◽  
Vol 12 (06) ◽  
pp. 663-672
Author(s):  
Ben-Yuan Gu ◽  
Wei-Dong Sheng ◽  
Jian Wang
Keyword(s):  
Energy Spectrum ◽  
Magnetic Flux ◽  
Potential Barrier ◽  
Coupling Effect ◽  
Finite Width ◽  
Persistent Currents ◽  
Tunneling Barrier ◽  
Radial Potential ◽  
Mesoscopic Ring

The energy spectrum and the persistent currents are calculated for a finite-width mesoscopic annulus with radial potential barrier, threading a magnetic flux through the hole of the ring. Owing to the presence of tunneling barrier, the coupling effect leads to the splitting of each radial energy subband of individual concentrical rings into two one. Thus, total currents and currents carried by single high-lying eigenstate as a function of magnetic flux exhibit complicated patterns. However, periodicity and antisymmetry of current curves in the flux still preserve.

scholarly journals Comment on “Peierls Gap in a Mesoscopic Ring Threaded by a Magnetic Flux”

1998 ◽  
Vol 80 (15) ◽  
pp. 3416-3416 ◽  
Author(s):  
B. Nathanson ◽  
O. Entin-Wohlman ◽  
B. Mühlschlegel
Keyword(s):  
Magnetic Flux ◽  
Mesoscopic Ring

Peierls Gap in a Mesoscopic Ring Threaded by a Magnetic Flux

1997 ◽  
Vol 78 (18) ◽  
pp. 3523-3526 ◽  
Author(s):  
J. Yi ◽  
M. Y. Choi ◽  
K. Park ◽  
E.-H. Lee
Keyword(s):  
Magnetic Flux ◽  
Mesoscopic Ring

NOVEL FLUX INDUCED RESONANT TUNNELING IN THE MESOSCOPIC RING CONFINED BETWEEN POTENTIAL BARRIERS

1995 ◽  
Vol 09 (20) ◽  
pp. 2719-2734 ◽  
Author(s):  
ALMAS F. SADREEV ◽  
VALERY A. VID’MANOV
Keyword(s):  
Magnetic Flux ◽  
Transport Properties ◽  
Resonant Tunneling ◽  
Quantization Condition ◽  
Double Barrier ◽  
One Dimensional ◽  
Potential Barriers ◽  
Mesoscopic Ring ◽  
Aharonov Bohm ◽  
Double Barrier Structure

Transport properties of mesoscopic rings confined between potential barriers are considered. Also considered is the double barrier structure with barriers fabricated of rings connected by a one-dimensional wire. Such structures we define as Aharonov-Bohm diodes with resonant tunneling (ABDRT) because for zero external magnetic flux their transport properties are quite similar to diodes with resonant tunneling (DRT). However, application of external magnetic flux gives rise to new resonant peaks of transmission determined by the quantization condition of the rings. Positions and widths of these novel flux induced resonant peaks extremely depend on the flux.

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