Real-space imaging of the atomic-scale magnetic structure of Fe1+yTe
Spin-polarized scanning tunneling microscopy (SP-STM) has been used extensively to study magnetic properties of nanostructures. Using SP-STM to visualize magnetic order in strongly correlated materials on an atomic scale is highly desirable, but challenging. We achieved this goal in iron tellurium (...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2014-08, Vol.345 (6197), p.653-656 |
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| creator | Enayat, Mostafa Sun, Zhixiang Singh, Udai Raj Aluru, Ramakrishna Schmaus, Stefan Yaresko, Alexander Liu, Yong Lin, Chengtian Tsurkan, Vladimir Loidl, Alois Deisenhofer, Joachim Wahl, Peter |
| description | Spin-polarized scanning tunneling microscopy (SP-STM) has been used extensively to study magnetic properties of nanostructures. Using SP-STM to visualize magnetic order in strongly correlated materials on an atomic scale is highly desirable, but challenging. We achieved this goal in iron tellurium (Fe1+yTe), the nonsuperconducting parent compound of the iron chalcogenides, by using a STM tip with a magnetic cluster at its apex. Our images of the magnetic structure reveal that the magnetic order in the monoclinic phase is a unidirectional stripe order; in the orthorhombic phase at higher excess iron concentration (y > 0.12), a transition to a phase with coexisting magnetic orders in both directions is observed. It may be possible to generalize the technique to other high-temperature superconductor families, such as the cuprates. |
| doi_str_mv | 10.1126/science.1251682 |
| format | Article |
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Using SP-STM to visualize magnetic order in strongly correlated materials on an atomic scale is highly desirable, but challenging. We achieved this goal in iron tellurium (Fe1+yTe), the nonsuperconducting parent compound of the iron chalcogenides, by using a STM tip with a magnetic cluster at its apex. Our images of the magnetic structure reveal that the magnetic order in the monoclinic phase is a unidirectional stripe order; in the orthorhombic phase at higher excess iron concentration (y > 0.12), a transition to a phase with coexisting magnetic orders in both directions is observed. 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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Clusters High temperature superconductors Magnetic structure Magnetism Materials science Microscopes Microscopy Nanostructured materials Picking Scanning Superconductivity Tunneling |
| title | Real-space imaging of the atomic-scale magnetic structure of Fe1+yTe |
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