| Description: | [DPS Seminar] Dr. Anindya Das (IISc Bangalore) -- Quantum Transport in Graphene |
| Date: | Thursday, Apr 26, 2018 |
| Time: | 2 p.m. - 3 p.m. |
| Venue: | 113, DPS Meeting Room, RC |
| Details: | The coupling of a quantum Hall state and a superconductor has been proposed as a novel route for creating exotic topological entities, such as non-abelian Majorana, parafermion or Fibbonacci particles. In the first part I will talk about the coexistence of quantum Hall and superconductivity in graphene. We demonstrate the Andreev reflection at the junction of a quantum Hall state in graphene and a superconductor. Furthermore the existence of Andreev process was verified by measuring the enhanced shot noise at the junction. In the second part I will discuss about graphene as a quantum heat conductor. Quantum limit of thermal conductance is a universal phenomenon irrespective of type of carriers and its statistics. In this work we measure the quantum limit of thermal conductance in the integer quantum Hall regime of graphene. This paves the way to investigate the flow of information in exotic systems like twisted bilayer graphene etc. |
| Calendar: | Seminar Calendar (entered by anandamohan) |