تقرير
Orbital Symmetries of Charge Density Wave Order in YBa2Cu3O6+x
| العنوان: | Orbital Symmetries of Charge Density Wave Order in YBa2Cu3O6+x |
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| المؤلفون: | McMahon, Christopher, Achkar, A. J., Neto, E. H. da Silva, Djianto, I., Menard, J., He, F., Sutarto, R., Comin, R., Liang, Ruixing, Bonn, D. A., Hardy, W. N., Damascelli, A., Hawthorn, D. G. |
| المصدر: | Science Advances, 6 (45), eaay0345 (2020) |
| سنة النشر: | 2019 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Charge density wave (CDW) order has been shown to compete and coexist with superconductivity in underdoped cuprates. Theoretical proposals for the CDW order include an unconventional $d$-symmetry form factor CDW, evidence for which has emerged from measurements, including resonant soft x-ray scattering (RSXS) in YBa$_2$Cu$_3$O$_{6+x}$ (YBCO). Here, we revisit RSXS measurements of the CDW symmetry in YBCO, using a variation in the measurement geometry to provide enhanced sensitivity to orbital symmetry. We show that the $(0\ 0.31\ L)$ CDW peak measured at the Cu $L$ edge is dominated by an $s$ form factor rather than a $d$ form factor as was reported previously. In addition, by measuring both $(0.31\ 0\ L)$ and $(0\ 0.31\ L)$ peaks, we identify a pronounced difference in the orbital symmetry of the CDW order along the $a$ and $b$ axes, with the CDW along the $a$ axis exhibiting orbital order in addition to charge order. Comment: 17 pages, 4 figures + supplementary information |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1126/sciadv.aay0345 |
| URL الوصول: | http://arxiv.org/abs/1904.12929 |
| رقم الأكسشن: | edsarx.1904.12929 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1126/sciadv.aay0345 |
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