Observation of vacuum tunneling of spin-polarized electrons with the scanning tunneling microscope
| Autor: | Roland Wiesendanger, Gernot Güntherodt, R. Ruf, H.-J. Güntherodt, Richard Joseph Gambino |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Materials science
Condensed matter physics Scanning tunneling spectroscopy General Physics and Astronomy Electron law.invention Condensed Matter::Materials Science Tunnel effect Ferromagnetism law Condensed Matter::Superconductivity Antiferromagnetism Scanning tunneling microscope Single crystal Quantum tunnelling |
| Zdroj: | Physical Review Letters. 65:247-250 |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.65.247 |
| Popis: | Vacuum tunneling of spin-polarized electrons from a ferromagnetic ${\mathrm{CrO}}_{2}$ tip into a Cr(001) single crystal has been observed by means of a scanning tunneling microscope (STM) operated in UHV. Topographic STM images of the Cr(001) surface using a tungsten tip confirm the model of topological antiferromagnetism between ferromagnetic terraces separated by monatomic steps of 0.144 nm height. With ${\mathrm{CrO}}_{2}$ tips, the measured step-height values alternate around the mean value of 0.144 nm due to an additional contribution from spin-polarized-electron tunneling. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|