Conclusion and Future Outlook

The major part of this thesis was dedicated to understanding the edge structures of the integer and fractional quantum Hall (QH) phases realized in hBN-encapsulated “graphene” devices by measuring the quantized thermal and electrical conductance. These works are reported in chapter  4 , 5 , and 6 . In the last two working chapters of this thesis, we study two different problems which are not related to the thermal conductance measurement. In chapter  7 , we have reported the detection of the dispersive edge modes in bernal stacked trilayer graphene using the nonlocal transport measurement. In chapter  8 , we report the enhanced electron-phonon coupling in a doubly aligned hBN/BLG moiré device.