Designer Quantum Materials Out of Equilibrium

Projektinformationen

AlterMateria

ID Finanzhilfevereinbarung: 677458

DOI

10.3030/677458

Projekt abgeschlossen

EK-Unterschriftsdatum 26 Februar 2016

Startdatum 1 Juni 2016

Enddatum 31 Mai 2021

Finanziert unter

• EXCELLENT SCIENCE - European Research Council (ERC)

Gesamtkosten

€ 1 499 982,00

EU-Beitrag

€ 1 499 982,00

Koordiniert durch

TECHNISCHE UNIVERSITEIT DELFT
Netherlands

Periodic Reporting for period 4 - AlterMateria (Designer Quantum Materials Out of Equilibrium)

Berichtszeitraum: 2020-12-01 bis 2021-05-31

Zusammenfassung vom Kontext und den Gesamtzielen des Projekts

The energy consumption associated with information processing and storage is rapidly becoming unsustainable. The manipulation of magnetism and other collective quantum phenomena in solids using ultrashort pulses of light is a promising route towards implementing non-volatile and low-dissipation storage of information. In this project we address these questions in a class of materials recently discovered. We have demonstrated ultraefficient magnetic switching obtained by ultrafast control of the crystal lattice. In order to reach this goal, we developed bespoke materials engineered at the atomic scale.

Arbeit, die ab Beginn des Projekts bis zum Ende des durch den Bericht erfassten Berichtszeitraums geleistet wurde, und die wichtigsten bis dahin erzielten Ergebnisse

For this project we have designed a new class of magnetic materials controlled at the atomic scale, where magnetism is strongly coupled to the exact atomic configuration of the crystal lattice. Such an unstable landscape is produced by design, in order to create a magnetic system susceptible to switching with ultralow dissipation.

Fortschritte, die über den aktuellen Stand der Technik hinausgehen und voraussichtliche potenzielle Auswirkungen (einschließlich der bis dato erzielten sozioökonomischen Auswirkungen und weiter gefassten gesellschaftlichen Auswirkungen des Projekts)

Our ever-growing demand for data processing calls for new methods to manipulate and control the state of magnetic materials on short timescales. These materials host elementary magnetic moments, called spins, whose arrangement is mainly determined by the arrangement of the atoms in the crystal lattice. Therefore, the most natural route towards control of the magnetic state is to change the crystal configuration. High mechanical pressure is normally required to make a sufficient impact on magnetic properties,. However, applying a mechanical strain is intrinsically a very slow process. In our experiments we have found a solution to this problem. Using light to optically shake a magnet by resonantly stimulating specific atomic vibrations of the lattice, we were able to change its magnetic state.

Ligth control of magnatic interactions