179 citations · 2.1k across the 52 of their papers we have counts for
27 papers · 1 filter
Superconductor-quantum dot hybrid coolers
Sun-Yong Hwang, Björn Sothmann, David Sanchez
We propose a refrigeration scheme in a mesoscopic superconductor-quantum dot hybrid device. The setup can significantly cool down a normal metal coupled to the device by applying a…
Nonlocal quantum heat engines made of hybrid superconducting devices
S. Mojtaba Tabatabaei, David Sanchez, Alfredo Levy Yeyati +1
We discuss a quantum thermal machine that generates power from a thermally driven double quantum dot coupled to normal and superconducting reservoirs. Energy exchange between the d…
Trivial and topological bound states in bilayer graphene quantum dots and rings
Nassima Benchtaber, David Sánchez, Llorenç Serra
We discuss and compare two different types of confinement in bilayer graphene by top and bottom gating with symmetrical microelectrodes. Trivial confinement corresponds to the same…
Beating Carnot efficiency with periodically driven chiral conductors
Sungguen Ryu, Rosa López, Llorenç Serra +1
Classically, the power generated by an ideal thermal machine cannot be larger than the Carnot limit. This profound result is rooted in the second law of thermodynamics. A hot quest…
Andreev-Coulomb Drag in Coupled Quantum Dots
S. Mojtaba Tabatabaei, David Sanchez, Alfredo Levy Yeyati +1
The Coulomb drag effect has been observed as a tiny current induced by both electron-hole asymmetry and interactions in normal coupled quantum dot devices. In the present work we s…
Topologically non-trivial valley states in bilayer graphene quantum point contacts
Hiske Overweg, Angelika Knothe, Thomas Fabian +11
We present measurements of quantized conductance in electrostatically induced quantum point contacts in bilayer graphene. The application of a perpendicular magnetic field leads to…