Institute of Nanotechnology

Quantum Transport and Correlations

Nanoelectronic devices can display spectacular quantum effects in transport. Electron interactions and correlations between electrons and bosonic degrees of freedom often play a crucial role.

At the INT we work on hybrid materials, where superconducting and (ferro-) magnetic materials are combined to allow the tuning of the interfacial superconducting state on transistors where the controllable movement of a single-atom provides the switching mechanism, on spin-polarized transport through molecules contacted via low temperature STM, on nanowire networks which are dominated by electron interactions, or on engineering of quantum states by combining quantum dots with single electron effects localized photon fields.

Sketch of Spiromolecule with STM tip
Quantum Control

Low-temperature STM for transport and electro- luminescence of single molecules

Lukas Gerhard

Wulf Wulfhekel

Crossed Andreev Reflection
Superconductor Hybrid Structures

Devices with applications in spintronics and quantum information processing

Detlef Beckmann

Wulf Wulfhekel

Electron Transport in Nanowires and Nanotubes

Theoretical studies on transport properties of interacting electrons in quantum wires

Dmitry Polyakov

Alexander Mirlin

Multifractal electron wave function at the quantum Hall transition critical state.
Disorder and Correlations in Quantum Transport

Theories of quantum transport and phase transitions in interacting disordered nanostructures with a focus on 2D systems

Igor Gornyi

Dmitry Polyakov

Alexander Mirlin

single atom transistor
The Single-Atom Transistor

Controlling individual atoms in the quantum point contact

Thomas Schimmel

Holium STM Setting
Electron Transport through Quantum Dots and Hybrid Nanostructures

Describing electron transport and current noise using diagrammatic perturbation theory, full counting statistics, and path integral techniques

Andrei Zaikin

Gerd Schön