Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field

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Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field. / Grap, Stephan; Andergassen, Sabine; Paaske, Jens; Meden, Volker.

In: Physical Review B, Vol. 83, No. 11, 11.03.2011, p. 115115 .

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Grap, S, Andergassen, S, Paaske, J & Meden, V 2011, 'Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field', Physical Review B, vol. 83, no. 11, pp. 115115 . https://doi.org/10.1103/PhysRevB.83.115115

APA

Grap, S., Andergassen, S., Paaske, J., & Meden, V. (2011). Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field. Physical Review B, 83(11), 115115 . https://doi.org/10.1103/PhysRevB.83.115115

Vancouver

Grap S, Andergassen S, Paaske J, Meden V. Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field. Physical Review B. 2011 Mar 11;83(11):115115 . https://doi.org/10.1103/PhysRevB.83.115115

Author

Grap, Stephan ; Andergassen, Sabine ; Paaske, Jens ; Meden, Volker. / Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field. In: Physical Review B. 2011 ; Vol. 83, No. 11. pp. 115115 .

Bibtex

@article{2db51bd1340f432e8ec97fd742198142,
title = "Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field",
abstract = "We study electron transport through a serial double quantum dot with Rashba spin-orbit interaction (SOI) and Zeeman field of amplitude B in the presence of local Coulomb repulsion. The linear conductance as a function of a gate voltage Vg equally shifting the levels on both dots shows two B=0 Kondo ridges, which are robust against SOI as time-reversal symmetry is preserved. As a result of the crossing of a spin-up and a spin-down level at vanishing SOI, two additional Kondo plateaus appear at finite B. They are not protected by symmetry and rapidly vanish if the SOI is turned on. Left-right asymmetric level-lead couplings and detuned on-site energies lead to a simultaneous breaking of left-right and bonding-antibonding state symmetry. In this case, the finite-B Kondo ridges in the Vg-B plane are bent with respect to the Vg axis. For the Kondo ridge to develop, different level renormalizations must be compensated by adjusting B.",
author = "Stephan Grap and Sabine Andergassen and Jens Paaske and Volker Meden",
year = "2011",
month = mar,
day = "11",
doi = "10.1103/PhysRevB.83.115115",
language = "English",
volume = "83",
pages = "115115 ",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "11",

}

RIS

TY - JOUR

T1 - Spin-orbit interaction and asymmetry effects on Kondo ridges at finite magnetic field

AU - Grap, Stephan

AU - Andergassen, Sabine

AU - Paaske, Jens

AU - Meden, Volker

PY - 2011/3/11

Y1 - 2011/3/11

N2 - We study electron transport through a serial double quantum dot with Rashba spin-orbit interaction (SOI) and Zeeman field of amplitude B in the presence of local Coulomb repulsion. The linear conductance as a function of a gate voltage Vg equally shifting the levels on both dots shows two B=0 Kondo ridges, which are robust against SOI as time-reversal symmetry is preserved. As a result of the crossing of a spin-up and a spin-down level at vanishing SOI, two additional Kondo plateaus appear at finite B. They are not protected by symmetry and rapidly vanish if the SOI is turned on. Left-right asymmetric level-lead couplings and detuned on-site energies lead to a simultaneous breaking of left-right and bonding-antibonding state symmetry. In this case, the finite-B Kondo ridges in the Vg-B plane are bent with respect to the Vg axis. For the Kondo ridge to develop, different level renormalizations must be compensated by adjusting B.

AB - We study electron transport through a serial double quantum dot with Rashba spin-orbit interaction (SOI) and Zeeman field of amplitude B in the presence of local Coulomb repulsion. The linear conductance as a function of a gate voltage Vg equally shifting the levels on both dots shows two B=0 Kondo ridges, which are robust against SOI as time-reversal symmetry is preserved. As a result of the crossing of a spin-up and a spin-down level at vanishing SOI, two additional Kondo plateaus appear at finite B. They are not protected by symmetry and rapidly vanish if the SOI is turned on. Left-right asymmetric level-lead couplings and detuned on-site energies lead to a simultaneous breaking of left-right and bonding-antibonding state symmetry. In this case, the finite-B Kondo ridges in the Vg-B plane are bent with respect to the Vg axis. For the Kondo ridge to develop, different level renormalizations must be compensated by adjusting B.

U2 - 10.1103/PhysRevB.83.115115

DO - 10.1103/PhysRevB.83.115115

M3 - Journal article

VL - 83

SP - 115115

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 11

ER -

ID: 36141385