Nonlocal transport in graphene quantum dots coupled by a superconductor

LTL Quantum Physics Seminar (Nanotalo). Speaker: Dr. Zhenbing Tan (Aalto University, Finland).

Graphene quantum dots coupled by a superconductor is an interesting topic. The device can be used to study the Cooper pair splitting effect, which produce entangled pair with potential to be used for the quantum information process. We study the bias dependence of the nonlocal effect in the device. With higher bias, there is strong nonlocal conductance increasing. We contribute that to the heating by the high bias due to the conductance sensitive to the temperature. And we will present our preliminary study on thermopower of the device.