TY - JOUR
T1 - Quantized pumped charge due to surface acoustic waves in a one-dimensional channel
AU - Entin-Wohlman, O.
PY - 2002
Y1 - 2002
N2 - The quantum-mechanical adiabatic current, pumped through an unbiased one-dimensional (1D) channel, connected to two 1D leads and subject to surface acoustic waves (SAW), is calculated exactly for noninteracting electrons. The resulting pumped charge (during each period of the SAW) exhibits a staircase structure, with integer values (in units of electronic charge). We also find staircases for higher harmonics of the current. The qualitative dependence of these staircases on many parameters is reminiscent of experimental observations.
AB - The quantum-mechanical adiabatic current, pumped through an unbiased one-dimensional (1D) channel, connected to two 1D leads and subject to surface acoustic waves (SAW), is calculated exactly for noninteracting electrons. The resulting pumped charge (during each period of the SAW) exhibits a staircase structure, with integer values (in units of electronic charge). We also find staircases for higher harmonics of the current. The qualitative dependence of these staircases on many parameters is reminiscent of experimental observations.
UR - http://www.scopus.com/inward/record.url?scp=85038307688&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.65.241401
DO - 10.1103/PhysRevB.65.241401
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AN - SCOPUS:85038307688
SN - 1098-0121
VL - 65
SP - 1
EP - 4
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 24
ER -