تقرير
Crystal anisotropy implications on the intrinsic magnetic and optical properties in van der Waals FePS3
| العنوان: | Crystal anisotropy implications on the intrinsic magnetic and optical properties in van der Waals FePS3 |
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| المؤلفون: | Geraffy, Ellenor, Zuri, Shahar, Rybak, Milosz Marcin, Horani, Faris, Budniak, Adam K., Amouyal, Yaron, Birowska, Magdalena, Lifshitz, Efrat |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | Antiferromagnetic (AFM) FePS3 has gained significant interest recently for its potential applications in spin-related devices. A single layer is comprised of a honeycomb network, stabilized by long-range spin-exchange interactions, with a zigzag or Neel arrangement of the Fe-atoms. This study exposed, for the first time, a strong impact of lateral crystal distortion on the magnetic arrangement and optical properties of FePS3. This impact was deciphered by correlating photoluminescence (PL) observations with single-crystal XRD which uncovered anisotropy in the a/b crystallographic plane. Thus, induceing a breakage in the inversion symmetry in FePS3 causing changes in it's electronic and optical transitions. The MPL observations exhibited an unexpected band-edge circularly polarized recombination emission, while off-band-edge transitions were linearly polarized. Also, temperature-dependent MPL measurements reflected zigzag-AFM at low temperatures and the coexistence of zigzag or Neel at mid temperatures. Theoretical calculation implementing anisotropy in spin-exchange interactions among Fe atom's nearest neighbors revealed stabilized zigzag arrangement tilted away from the a-axis. Furthermore, DFT calculations of the electronic band-edge predicted split states in degenerate symmetric points (K+/K-) for zigzag structure and non-degenerate for the Neel arrangement. Highlighting the importance of the inclusion of a crystallographic anisotropy parameter for the simulation of the experimental observations. Comment: Upon recieving feedback from the journal on this paper, we are undergoing extensive modifications to this work and so would like to withdraw it at this time. We hope to submitted this work once we have finished our modifications |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2208.10890 |
| رقم الأكسشن: | edsarx.2208.10890 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |