ITP OpenIR  > SCI期刊论文
Li, XQ; Su, ZB; Li, XQ , UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 ANTWERP,BELGIUM.
Quantum transport theory for the ac response of interacting resonant-tunneling devices
Source PublicationPHYSICAL REVIEW B
KeywordTime-dependent Transport Wigner-function Anderson Model Frequencies Conductance Equilibrium Inductance Voltage Systems Field
AbstractWe present an analytical approach to the frequency response of the interacting resonant-tunneling devices (RTD's) to a small ac signal voltage. Within the wideband assumption for the lead electrons and Hartree approximation for the tunneling effect, we obtain a compact formula for the sc conductance. This has an interesting structure in that the geometry factor of the device is separated out from the interaction in the device. This feature allows us to get some physical insight into the effect of resonance and interaction on the ac response. In particular, we interpret the ac response in the physical picture of photon-assisted resonance between the Fermi surface and the central electron spectrum. The consistency between our result and other approaches is shown for the noninteracting system. We also apply our formula to the ac response of interacting RTD's, where the Hubbard electron-electron interaction in the resonant region is taken into account, and the remarkable features of charging effects on the ac response are presented.
1996
ISSN0163-1829
Volume54Issue:15Pages:10807-10813
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12574
CollectionSCI期刊论文
Corresponding AuthorLi, XQ , UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 ANTWERP,BELGIUM.
Recommended Citation
GB/T 7714
Li, XQ,Su, ZB,Li, XQ , UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 ANTWERP,BELGIUM.. Quantum transport theory for the ac response of interacting resonant-tunneling devices[J]. PHYSICAL REVIEW B,1996,54(15):10807-10813.
APA Li, XQ,Su, ZB,&Li, XQ , UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 ANTWERP,BELGIUM..(1996).Quantum transport theory for the ac response of interacting resonant-tunneling devices.PHYSICAL REVIEW B,54(15),10807-10813.
MLA Li, XQ,et al."Quantum transport theory for the ac response of interacting resonant-tunneling devices".PHYSICAL REVIEW B 54.15(1996):10807-10813.
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