Quantum Layered Matter Group TAU

We use layered sheets of atoms, like graphene, to assemble novel artificial materials and explore the quantum world of electrons and other crystal excitations. Beyond fundamental physics, we hope to improve present technologies (like AI) and make a better world (Tfo Tfo).

Research Goals

We aim to observe/understand/control the way electrons/photons/phonons and additional “crystal-induced” particles act in pure mediums that we confine into tiny artificial devices.

Since they make the building blocks of the current electronic revolution, by extending the library of these “quasi-particles”, our fundamental knowledge of their interactions and the concepts to control their properties could impact all fields of life.

Electro – mechanical coupling

Electromechanical coupling

The unit cell of layered materials can stretch by ~ 20% without breaking, which is much more than the typical breaking strain of other crystals.

QHE

Interfacial ladder ferroelectrics

The quantum Hall effect and superconductivity are two remarkable examples of matter excitation traveling over macroscopic distance with no dissipation.

Quantum transport

Superconducting quantum interference devices are made by coupling two superconductors across a non-superconducting medium. In a previous work graphene was demonstrated to serve as an excellent such medium.

Background

Layered crystals like graphite form strong covalent bonds in one plane and a relatively weak “van-der-Waals” attraction between the different planes.

We isolate the atomically thin layers and then stack them together like LEGO blocks to make new artificial materials and pursue our (hopefully innovative) ideas.

The LEGO concept in artificial vdW structures revealed new quasi-particles and correlated phenomena. Recently, we showed that switching between different crystals is possible by sliding the layers