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Numerical approach to time-dependent quantum transport and dynamical Kondo transition
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10.1063/1.3123526
/content/aip/journal/jcp/130/16/10.1063/1.3123526
http://aip.metastore.ingenta.com/content/aip/journal/jcp/130/16/10.1063/1.3123526
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Contour plot of on the -plane exemplified by the Drude model of with , , , , and . The blue (dark gray), red (gray), and green (light gray) sketches represent the SD, FD, and hybrid scheme for , respectively.

Image of FIG. 2.
FIG. 2.

Line shapes of spectral density functions. The scaling parameters are (in unit of meV) , , and for the Lorentzian, Gaussian, and sinc-square functions, respectively, so that these three functions all assume the value of 1/2 at .

Image of FIG. 3.
FIG. 3.

Steady-state current through the R-lead as a function of . The lines represent different types of as shown in Fig. 2. The other parameters adopted are (in unit of meV) , , , , and . The inset shows vs with a Lorentzian of .

Image of FIG. 4.
FIG. 4.

Differential conductance vs applied bias voltage. The parameters adopted are (in unit of meV) , , , , , and . Circles are calculated results and the connecting line is a guide to the eyes.

Image of FIG. 5.
FIG. 5.

The main panel depicts the differences of transient current in response to a delta voltage at several low temperatures from that at . The voltage amplitude is . Other parameters are the same as those adopted in Fig. 4. The inset exhibits the full transient current profiles at different temperatures.

Image of FIG. 6.
FIG. 6.

(a) Real and (b) imaginary parts of in response to delta-function voltages. The lines represent different temperatures. The voltage amplitude is . Other parameters are the same as those adopted in Fig. 4. The inset in (a) magnifies near .

Image of FIG. 7.
FIG. 7.

(a) Real and (b) imaginary parts of in response to a delta-function voltage at . The voltage amplitude is . Other parameters are the same as those adopted in Fig. 4.

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/content/aip/journal/jcp/130/16/10.1063/1.3123526
2009-04-28
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Numerical approach to time-dependent quantum transport and dynamical Kondo transition
http://aip.metastore.ingenta.com/content/aip/journal/jcp/130/16/10.1063/1.3123526
10.1063/1.3123526
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