TY - JOUR
T1 - Acoustoelectric pumping through a ballistic point contact in the presence of magnetic fields
AU - Entin-Wohlman, O.
AU - Levinson, Y.
AU - Wölfle, P.
PY - 2001/11/15
Y1 - 2001/11/15
N2 - The acoustoelectric current J induced in a ballistic point contact (PC) by a surface acoustic wave is calculated in the presence of a perpendicular magnetic field B. It is found that the dependence of the current on the Fermi energy in the terminals is strongly correlated with that of the PC conductance: J is small at the conductance plateaus and is large at the steps. Like the conductance, the acoustoelectric current has the same functional behavior as in the absence of a field, but with renormalized energy scales, which depend on the strength of the magnetic field B.
AB - The acoustoelectric current J induced in a ballistic point contact (PC) by a surface acoustic wave is calculated in the presence of a perpendicular magnetic field B. It is found that the dependence of the current on the Fermi energy in the terminals is strongly correlated with that of the PC conductance: J is small at the conductance plateaus and is large at the steps. Like the conductance, the acoustoelectric current has the same functional behavior as in the absence of a field, but with renormalized energy scales, which depend on the strength of the magnetic field B.
UR - http://www.scopus.com/inward/record.url?scp=0035891340&partnerID=8YFLogxK
U2 - 10.1103/physrevb.64.195308
DO - 10.1103/physrevb.64.195308
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AN - SCOPUS:0035891340
SN - 0163-1829
VL - 64
SP - 1953081
EP - 1953087
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 19
M1 - 195308
ER -