59 datasets found

Electrical and physical properties of low-dimensional structures have been studied for the various applications such as electronics, sensors, and etc. Low-frequency...

International audience

This thesis is about the magnetic properties of two different two dimensional systems. The first one corresponds to vanadates or cuprate crystals, which can be studied...

International audience

This thesis presents a study of electronic transport in exfoliated graphene at low temperature. A first set of experiment at 4K on samples connected by titanium/gold...

Graphene refers to a two-dimensional crystal made of carbon atoms arranged on a honeycomb lattice. This material presents interesting electronic properties regarding...

Rapidly changing market of electronic devices sets up a lot of challenges for the manufacturing and design technologies. When electronic circuit elements get smaller,...

Spintronic phenomena in magnetic tunnel junctions and thin films are very promising from both fundamental and application points of view. They are based on exploring...

Since its experimental discovery in 2004, graphene (a single layer of graphite) has attracted a lot of attention. It also leads to a renewed interest in graphite....

International audience

This thesis discusses the elastic and inelastic scattering in monolayer graphene, investigated by means of microwave carrier dynamics and noise. We study in a first...

15 pages

In this thesis manuscript, we present a theory describing the coupling between the quantized electromagnetic field of a cavity resonator and the cyclotron transition...

This paper reviews recent advances in emission of terahertz radiation from two-dimensional (2D) electron systems in semiconductor nano-heterostructures. 2D plasmon...

We demonstrate two different THz rectification mechanisms by graphene field effect transistors: a mesoscopic rectification due to the existence of 2nd-order...

Antenna-coupled field effect transistors have been developed as plasma-wave THz detectors in both InAs nanowire and graphene channel material. Room temperature...

The works of this thesis have helped contribute to the understanding and development of the physics and chemistry of materials. In this study, new high-performance...

International audience

Graphene is a candidate for next generation spintronics devices exploiting its long spin transport length and high carrier mobility. Besides, when put in interaction...

Mesoscopic physic is currently dominated by transport measurements that extract overall electronic properties of the studied sytstems. Tunneling spectroscopy gives...