دورية أكاديمية
Temperature dependent nanoscale atomic correlations in Ir 1-xPtxTe2 (x=0.0, 0.03 and 0.04) system
| العنوان: | Temperature dependent nanoscale atomic correlations in Ir 1-xPtxTe2 (x=0.0, 0.03 and 0.04) system |
|---|---|
| المؤلفون: | B. Joseph, D. f. Mulato Gomez, L. Simonelli, M. Bendele, L. Maugeri, S. Pyon, K. Kudo, M. Nohara, J. Mustre De Leon, Takashi Mizokawa, PARIS, EUGENIO, IADECOLA, ANTONELLA, SAINI, Naurang Lal |
| المساهمون: | B., Joseph, Paris, Eugenio, D. f., Mulato Gomez, L., Simonelli, M., Bendele, L., Maugeri, Iadecola, Antonella, S., Pyon, K., Kudo, M., Nohara, J., Mustre De Leon, Takashi, Mizokawa, Saini, Naurang Lal |
| بيانات النشر: | Institute of Physics Publishing |
| سنة النشر: | 2014 |
| المجموعة: | Sapienza Università di Roma: CINECA IRIS |
| مصطلحات موضوعية: | inter and intra-layer atomic correlation, structural phase transition, layered superconductor, local structure |
| الوصف: | X-ray absorption near-edge structure (XANES) spectroscopy has been used to investigate the unoccupied electronic states and local geometry of Ir 1-xPtxTe2(x=0.0, 0.03 and 0.04) as a function of temperature. The Ir L3-edge absorption white line, as well as high energy XANES features due to the photoelectron multiple scatterings with near neighbours, reveal clear changes in the unoccupied 5d-electronic states and the local geometry with Pt substitution. We find an anomalous spectral weight transfer across the known first-order structural phase transition from the trigonal to monoclinic phase in IrTe2, which characterizes the reduced atomic structure symmetry below the transition temperature. No such changes with temperature are seen in the Pt substituted superconducting samples. In addition, a gradual increase of the spectral weight transfer is observed in IrTe2 with a further decrease in temperature below the transition, indicating that the low temperature phase is likely to have a symmetry lower than the monoclinic one. The results suggest that the interplay between inter-layer and intra-layer atomic correlations should have a significant role in the properties of an Ir1-xPtxTe2 system. © 2014 IOP Publishing Ltd. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | STAMPA |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/pmid/25164212; info:eu-repo/semantics/altIdentifier/wos/WOS:000341120100004; volume:26; issue:37; firstpage:375702; journal:JOURNAL OF PHYSICS. CONDENSED MATTER; http://hdl.handle.net/11573/620398Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84906751781 |
| DOI: | 10.1088/0953-8984/26/37/375702 |
| الإتاحة: | https://doi.org/10.1088/0953-8984/26/37/375702Test http://hdl.handle.net/11573/620398Test |
| رقم الانضمام: | edsbas.EECC1950 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/0953-8984/26/37/375702 |
|---|