Report
Out-of-plane nesting driven spin spiral in ultrathin Fe/Cu(001) films
| العنوان: | Out-of-plane nesting driven spin spiral in ultrathin Fe/Cu(001) films |
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| المؤلفون: | Miyawaki, J., Chainani, A., Takata, Y., Mulazzi, M., Oura, M., Senba, Y., Ohashi, H., Shin, S. |
| سنة النشر: | 2009 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter |
| الوصف: | Epitaxial ultrathin Fe films on fcc Cu(001) exhibit a spin spiral (SS), in contrast to the ferromagnetism of bulk bcc Fe. We study the in-plane and out-of-plane Fermi surfaces (FSs) of the SS in 8 monolayer Fe/Cu(001) films using energy dependent soft x-ray momentum-resolved photoemission spectroscopy. We show that the SS originates in nested regions confined to out-of-plane FSs, which are drastically modified compared to in-plane FSs. From precise reciprocal space maps in successive zones, we obtain the associated real space compressive strain of 1.5+-0.5% along c-axis. An autocorrelation analysis quantifies the incommensurate ordering vector q=(2pi/a)(0,0,~0.86), favoring a SS and consistent with magneto-optic Kerr effect experiments. The results reveal the importance of in-plane and out-of-plane FS mapping for ultrathin films. Comment: 4 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.104.066407 |
| URL الوصول: | http://arxiv.org/abs/0911.2300 |
| رقم الانضمام: | edsarx.0911.2300 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.104.066407 |
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