Competing Electronic Phases near the Onset of Superconductivity in Hole-doped SrFe2As2
An intriguingly complex phase diagram of Na-doped SrFe2As2 is uncovered using high-resolution thermal-expansion, magnetization, and heat-capacity measurements. The detailed temperature dependence of the orthorhombic distortion and the anisotropy of the uniform magnetic susceptibility provide evidenc...
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| Veröffentlicht in: | Journal of the Physical Society of Japan 2019-10, Vol.88 (10), p.104710-1 |
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| container_issue | 10 |
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| container_title | Journal of the Physical Society of Japan |
| container_volume | 88 |
| creator | Wang, Liran He, Mingquan Scherer, Daniel D Hardy, Frédéric Schweiss, Peter Wolf, Thomas Merz, Michael Andersen, Brian M Meingast, Christoph |
| description | An intriguingly complex phase diagram of Na-doped SrFe2As2 is uncovered using high-resolution thermal-expansion, magnetization, and heat-capacity measurements. The detailed temperature dependence of the orthorhombic distortion and the anisotropy of the uniform magnetic susceptibility provide evidence for nine distinct electronic phases near the transition region between stripe antiferromagnetism and unconventional superconductivity. In particular, we report the finding of a new magnetic phase which competes surprisingly strongly with superconductivity. From theoretical studies we propose that this phase is a double-Q phase consisting of a mixture of symmetry-distinct commensurate magnetic orders with a peculiar temperature-dependent magnetic moment reorientation. |
| doi_str_mv | 10.7566/JPSJ.88.104710 |
| format | Article |
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| ispartof | Journal of the Physical Society of Japan, 2019-10, Vol.88 (10), p.104710-1 |
| issn | 0031-9015 1347-4073 |
| language | eng |
| recordid | cdi_proquest_journals_2298541445 |
| source | Alma/SFX Local Collection |
| subjects | Anisotropy Antiferromagnetism Magnetic moments Magnetic permeability Phase diagrams Temperature dependence Unconventional superconductivity |
| title | Competing Electronic Phases near the Onset of Superconductivity in Hole-doped SrFe2As2 |
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