Lattice distortion and stripe-like antiferromagnetic order in Ca10(Pt3As8)(Fe2As2)5
| Autor: | Sapkota, A., Tucker, G. S., Ramazanoglu, M., Tian, W., Ni, N., Cava, R. J., McQueeney, R. J., Goldman, A. I., Kreyssig, A. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Physical Review B 90 (2014) 100504(R) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.90.100504 |
| Popis: | Ca10(Pt3As8)(Fe2As2)5 is the parent compound for a class of Fe-based high-temperature superconductors where superconductivity with transition temperatures up to 30 K can be introduced by partial element substitution. We present a combined high-resolution high-energy x-ray diffraction and elastic neutron scattering study on a Ca10(Pt3As8)(Fe2As2)5 single crystal. This study reveals the microscopic nature of two distinct and continuous phase transitions to be very similar to other Fe-based high-temperature superconductors: an orthorhombic distortion of the high-temperature tetragonal Fe-As lattice below T_S = 110(2) K followed by stripe-like antiferromagnetic ordering of the Fe moments below T_N = 96(2) K. These findings demonstrate that major features of the Fe-based high-temperature superconductors are very robust against variations in chemical constitution as well as structural imperfection of the layers separating the Fe-As layers from each other and confirms that the Fe-As layers primarily determine the physics in this class of material. Comment: 5 pages, 2 figures |
| Databáze: | arXiv |
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