Conţinutul numărului revistei |
Articolul precedent |
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660 0 |
SM ISO690:2012 ALURU , Ramakrishna, ZHOU, Haibiao, ESSIG, Antoine, REID, J.-Ph., TSURKAN, Vladimir, LOIDL, Alois, DEISENHOFER, Joachim, WAHL, Peter. Atomic-scale coexistence of short-range magnetic order and superconductivity in Fe1+ySe0.1Te0.9. In: Physical Review Materials, 2019, nr. 3(8), p. 0. ISSN -. DOI: https://doi.org/10.1103/PhysRevMaterials.3.084805 |
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Physical Review Materials | ||||||
Numărul 3(8) / 2019 / ISSN - /ISSNe 2475-9953 | ||||||
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DOI:https://doi.org/10.1103/PhysRevMaterials.3.084805 | ||||||
Pag. 0-0 | ||||||
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Rezumat | ||||||
The ground state of the parent compounds of many high-temperature superconductors is an antiferromagnetically ordered phase, where superconductivity emerges when the antiferromagnetic phase transition is suppressed by doping or application of pressure. This behavior implies a close relation between the two orders. Examining the interplay between them promises a better understanding of how the superconducting condensate forms from the antiferromagnetically ordered background. Here we explore this relation in real space at the atomic scale using low-temperature spin-polarized scanning tunneling microscopy and spectroscopy. We investigate the transition from antiferromagnetically ordered Fe1+yTe via the spin-glass phase in Fe1+ySe0.1Te0.9 to superconducting Fe1+ySe0.15Te0.85. In Fe1+ySe0.1Te0.9 we observe an atomic-scale coexistence of superconductivity and short-ranged bicollinear antiferromagnetic order. However, a direct correlation between the two orders is not observed, supporting the scenario of s± superconducting symmetry in this material. Our work demonstrates a direct probe of the relation between the two orders, which is indispensable for our understanding of high-temperature superconductivity. |
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