Aug 28 – 31, 2018
EPFL
Europe/Zurich timezone

【801】 Single Atom Magnets at Surfaces

Aug 29, 2018, 1:30 PM
30m
CE 1 (EPFL)

CE 1

EPFL

Talk Magnetism and Spintronics at the Nanoscale Magnetism and Spintronics at the Nanoscale

Speaker

Harald Brune (EPFL)

Description

Until two years ago, the smallest permanent magnets were single molecule magnets. Surface Science has opened up an alternative approach to this field in studying the magnetic properties of single atoms adsorbed onto surfaces. Very recently a major breakthrough was achieved by identifying systems where a single surface adsorbed atom are stable magnets. Ho atoms on two monolayer thick MgO(100) films grown on Ag(100) where found to exhibit magnetic remanence up to 30 K. Very recent STM experiments show stable magnetization over two hours in external fields of 8 T that are applied opposite to the magnetization of the atoms and at temperatures of 30 K; the first spontaneous switching is observed at 45 K.

Primary author

Harald Brune (EPFL)

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