Abstract
We solve the single-impurity Anderson model in a magnetic field and out of equilibrium with an auxiliary master equation approach [1,2,3]. Employing Matrix Product States techniques to solve the many-body Lindblad equation allows us to generate highly accurate results, especially for the spectral functions. In equilibrium we find a remarkable agreement with spectral functions obtained with NRG, cf. [3].
The application of a bias voltage V and a magnetic field B both individually result in a splitting of the Kondo resonance around the Kondo temperature. With our method we can resolve a four-peak structure in the spectral function for nonzero B and V, due to both effects. This four-peak structure manifests itself in the differential conductance, which is very well accessible by experiments.
We finally compare our results to recent experiments [4,5] and draw conclusions about the underlying spectral functions. We find that our results nicely agree with experimental data also outside the Kondo regime.
[1] E. Arrigoni et al., Phys. Rev. Lett. 110, 086403 (2013)
[2] A. Dorda et al., Phys. Rev. B 89, 165105 (2014)
[3] A. Dorda et al., Phys. Rev. B 92, 125145 (2015)
[4] A. V. Kretinin et al., Phys. Rev. B 84, 245316 (2011)
[5] A. V. Kretinin et al., Phys. Rev. B 85, 201301(R) (2012)
The application of a bias voltage V and a magnetic field B both individually result in a splitting of the Kondo resonance around the Kondo temperature. With our method we can resolve a four-peak structure in the spectral function for nonzero B and V, due to both effects. This four-peak structure manifests itself in the differential conductance, which is very well accessible by experiments.
We finally compare our results to recent experiments [4,5] and draw conclusions about the underlying spectral functions. We find that our results nicely agree with experimental data also outside the Kondo regime.
[1] E. Arrigoni et al., Phys. Rev. Lett. 110, 086403 (2013)
[2] A. Dorda et al., Phys. Rev. B 89, 165105 (2014)
[3] A. Dorda et al., Phys. Rev. B 92, 125145 (2015)
[4] A. V. Kretinin et al., Phys. Rev. B 84, 245316 (2011)
[5] A. V. Kretinin et al., Phys. Rev. B 85, 201301(R) (2012)
| Originalsprache | englisch |
|---|---|
| Publikationsstatus | Veröffentlicht - 20 Juni 2017 |
| Veranstaltung | 645. WE-Heraeus-Seminar: Emergent Phenomena and Universality in Correlated Quantum Systems Far Away from Equilibrium - Physikzentrum Bad Honnef, Bad Honnef, Deutschland Dauer: 18 Juni 2017 → 22 Juni 2017 https://indico.ph.tum.de/event/3705/?ovw=True |
Seminar
| Seminar | 645. WE-Heraeus-Seminar: Emergent Phenomena and Universality in Correlated Quantum Systems Far Away from Equilibrium |
|---|---|
| Land/Gebiet | Deutschland |
| Ort | Bad Honnef |
| Zeitraum | 18/06/17 → 22/06/17 |
| Internetadresse |
ASJC Scopus subject areas
- Physik der kondensierten Materie
Fields of Expertise
- Advanced Materials Science