Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Spin-orbit coupling and anisotropy of spin splitting in quantum dots.
AU - Könemann, J.
AU - Haug, R. J.
AU - Maude, D. K.
AU - Falko, V. I.
AU - Altshuler, B. L.
N1 - Altshuler and Falko predicted that spin-orbit coupling in lateral quantum dots leads to an effective magnetic field acting oppositely on spin up/down electrons. The resulting difference between the spin splitting for dots in a perpendicular and in-plane magnetic field has been observed experimentally by the Hannover group. RAE_import_type : Journal article RAE_uoa_type : Physics
PY - 2005/6/10
Y1 - 2005/6/10
N2 - In lateral quantum dots, the combined effect of both Dresselhaus and Bychkov-Rashba spin-orbit coupling is equivalent to an effective magnetic field ±BSO which has the opposite sign for sz=±1/2 spin electrons. When the external magnetic field is perpendicular to the planar structure, the field BSO generates an additional splitting for electron states as compared to the spin splitting in the in-plane field orientation. The anisotropy of spin splitting has been measured and then analyzed in terms of spin-orbit coupling in several AlGaAs/GaAs quantum dots by means of resonant tunneling spectroscopy. From the measured values and sign of the anisotropy we are able to determine the dominating spin-orbit coupling mechanism.
AB - In lateral quantum dots, the combined effect of both Dresselhaus and Bychkov-Rashba spin-orbit coupling is equivalent to an effective magnetic field ±BSO which has the opposite sign for sz=±1/2 spin electrons. When the external magnetic field is perpendicular to the planar structure, the field BSO generates an additional splitting for electron states as compared to the spin splitting in the in-plane field orientation. The anisotropy of spin splitting has been measured and then analyzed in terms of spin-orbit coupling in several AlGaAs/GaAs quantum dots by means of resonant tunneling spectroscopy. From the measured values and sign of the anisotropy we are able to determine the dominating spin-orbit coupling mechanism.
U2 - 10.1103/PhysRevLett.94.226404
DO - 10.1103/PhysRevLett.94.226404
M3 - Journal article
VL - 94
SP - 226404
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 22
ER -