Nernst and Seebeck effects in a graphene nanoribbon

Spin Seebeck Effect and Thermal Colossal Magnetoresistance in Graphene Nanoribbon Heterojunction

Spin caloritronics devices are very important for future development of low-power-consumption technology. We propose a new spin caloritronics device based on zigzag graphene nanoribbon (ZGNR), which is a heterojunction consisting of single-hydrogen-terminated ZGNR (ZGNR-H) and double-hydrogen-terminated ZGNR (ZGNR-H2). We predict that spin-up and spin-down currents flowing in opposite direction...

Josephson Current For a Graphene Nanoribbon Using a Lattice Model

A tight binding approach based on the Bogoliubov-de Gennes approach has been used to calculate the DC Josephson current for a lattice model for S-GNR-S junctions , for short junctions with respect to superconducting coherence length. We calculate the phase, length, width and chemical potential dependence at the Josephson junction and discuss the similarities and differences with regard to the t...

A graphene nanoribbon memory cell.

S D C1 C2 Over the past few years there has been a surge of interest in graphene, a recently isolated [ 1 ] one-atom-thick layer of carbon atoms arranged in a honeycomb lattice. From the application point of view this interest has mainly been driven by the high carrier mobility of graphene [ 2–4 ] which enables fabrication of fi eld-effect transistors (FETs) with much smaller channel resistance...

Selective scattering in a zigzag graphene nanoribbon

Electric transport of a zigzag graphene nanoribbon through a step-like potential or a potential barrier is studied by using the recursive Green’s function method. The results for a step-like potential show that scattering processes in a zigzag graphene nanoribbon obey a following selection rule: when the number of zigzag chains N is even, electrons in the band m are only scattered into the band...

Graphene nanoribbon heterojunctions and heterostructures