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| Hauptseite > Publikationsdatenbank > Chiral magnetic order at surfaces driven by inversion asymmetry > print |
| Hauptseite > Publikationsdatenbank > Chiral magnetic order at surfaces driven by inversion asymmetry > print |
| 001 | 56495 | ||
| 005 | 20180211172429.0 | ||
| 024 | 7 | _ | |2 pmid |a pmid:17495922 |
| 024 | 7 | _ | |2 DOI |a 10.1038/nature05802 |
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| 041 | _ | _ | |a eng |
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| 084 | _ | _ | |2 WoS |a Multidisciplinary Sciences |
| 100 | 1 | _ | |a Bode, M. |b 0 |0 P:(DE-HGF)0 |
| 245 | _ | _ | |a Chiral magnetic order at surfaces driven by inversion asymmetry |
| 260 | _ | _ | |a London [u.a.] |b Nature Publising Group |c 2007 |
| 300 | _ | _ | |a 190 - 193 |
| 336 | 7 | _ | |a Journal Article |0 PUB:(DE-HGF)16 |2 PUB:(DE-HGF) |
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| 440 | _ | 0 | |a Nature |x 0028-0836 |0 4484 |v 447 |
| 500 | _ | _ | |a Record converted from VDB: 12.11.2012 |
| 520 | _ | _ | |a Chirality is a fascinating phenomenon that can manifest itself in subtle ways, for example in biochemistry (in the observed single-handedness of biomolecules) and in particle physics (in the charge-parity violation of electroweak interactions). In condensed matter, magnetic materials can also display single-handed, or homochiral, spin structures. This may be caused by the Dzyaloshinskii-Moriya interaction, which arises from spin-orbit scattering of electrons in an inversion-asymmetric crystal field. This effect is typically irrelevant in bulk metals as their crystals are inversion symmetric. However, low-dimensional systems lack structural inversion symmetry, so that homochiral spin structures may occur. Here we report the observation of magnetic order of a specific chirality in a single atomic layer of manganese on a tungsten (110) substrate. Spin-polarized scanning tunnelling microscopy reveals that adjacent spins are not perfectly antiferromagnetic but slightly canted, resulting in a spin spiral structure with a period of about 12 nm. We show by quantitative theory that this chiral order is caused by the Dzyaloshinskii-Moriya interaction and leads to a left-rotating spin cycloid. Our findings confirm the significance of this interaction for magnets in reduced dimensions. Chirality in nanoscale magnets may play a crucial role in spintronic devices, where the spin rather than the charge of an electron is used for data transmission and manipulation. For instance, a spin-polarized current flowing through chiral magnetic structures will exert a spin-torque on the magnetic structure, causing a variety of excitations or manipulations of the magnetization and giving rise to microwave emission, magnetization switching, or magnetic motors. |
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| 700 | 1 | _ | |a Heide, M. |b 1 |u FZJ |0 P:(DE-Juel1)VDB3766 |
| 700 | 1 | _ | |a von Bergmann, K. |b 2 |0 P:(DE-HGF)0 |
| 700 | 1 | _ | |a Ferriani, P. |b 3 |0 P:(DE-HGF)0 |
| 700 | 1 | _ | |a Heinze, S. |b 4 |0 P:(DE-HGF)0 |
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| 700 | 1 | _ | |a Wiesendanger, R. |b 9 |0 P:(DE-HGF)0 |
| 773 | _ | _ | |a 10.1038/nature05802 |g Vol. 447, p. 190 - 193 |p 190 - 193 |q 447<190 - 193 |0 PERI:(DE-600)1413423-8 |t Nature |v 447 |y 2007 |x 0028-0836 |
| 856 | 7 | _ | |u http://dx.doi.org/10.1038/nature05802 |
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