Differential Conductance Anomaly in Superconducting Quantum Point Contacts

Details Differential Conductance Anomaly in Superconducting Quantum Point Contacts Differential Conductance Anomaly in Superconducting Quantum Point Contacts

2009-12-06

arxiv.org/abs/0912.1086v2

Physics

Condensed Matter

Superconductivity

incomplete paper

Scientific paper

10.1103/PhysRevB.80.184516

We present in this letter a theoretical analysis of the current-voltage (I-V) characteristics of a hybrid normal-superconducting device consisting of a quantum dot and two electrodes that can be either normal or superconducting. We show that voltage drops at two different contacts that have been regarded unimportant in literature play essential roles in the Andreev tunneling process when at least one of electrodes is superconducting. A differential-conductance-anomaly caused by the aforementioned voltage drops is predicted. We also propose a new spectroscopy method to measure the energy levels of a quantum dot as well as voltage drops at contacts between the quantum dot and the two leads. Our findings have potential applications for the next generation of electronic devices at nanoscale.

Affiliated with

Also associated with

No associations

Rating

Differential Conductance Anomaly in Superconducting Quantum Point Contacts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Differential Conductance Anomaly in Superconducting Quantum Point Contacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential Conductance Anomaly in Superconducting Quantum Point Contacts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-83967