TY  - JOUR
AU  - Möller, S.
AU  - Banszerus, L.
AU  - Hecker, K.
AU  - Dulisch, H.
AU  - Watanabe, K.
AU  - Taniguchi, T.
AU  - Volk, C.
AU  - Stampfer, C.
TI  - Role of antisymmetric orbitals and electron-electron interactions on the two-particle spin and valley blockade in graphene double quantum dots
JO  - Physical review / B
VL  - 111
IS  - 16
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2025-02652
SP  - 165416
PY  - 2025
AB  - We report on an experimental study of spin and valley blockade in two-electron bilayer graphene (BLG) double quantum dots (DQDs) and explore the limits set by asymmetric orbitals and electron-electron interactions. The results obtained from magnetotransport measurements on two-electron BLG DQDs, where the resonant tunneling transport involves both orbital symmetric and antisymmetric two-particle states, show a rich level spectrum. We observe a magnetic field tunable spin and valley blockade, which is limited by the orbital splitting, the strength of the electron-electron interaction and the difference in the valley 𝑔-factors between the symmetric and antisymmetric two-particle orbital states. Our conclusions are supported by simulations based on rate equations, which allow the identification of prominent interdot transitions associated with the transition from single- to two-particle states observed in the experiment.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001477725400003
DO  - DOI:10.1103/PhysRevB.111.165416
UR  - https://juser.fz-juelich.de/record/1042706
ER  -