Physics – Condensed Matter – Superconductivity
Scientific paper
2009-05-20
Phys, Rev. B 80, 144519(2009)
Physics
Condensed Matter
Superconductivity
17 pages, 5 figures
Scientific paper
We report studies of in-situ x-ray diffraction (XRD) and electronic properties on the single crystalline of Fe1.05Te compound under high pressure. The results demonstrated that the sample undergoes a pressure-induced lattice collapse in tetragonal phase (cT) at 4 GPa at room temperature. The cT phase in turn transfers to monoclinic (M) phase with increasing pressure to 14 GPa. The resistance measurements under pressures show that the onset temperature of structural phase transition (TSTR) decreases upon transformation from the tetragonal (T) to the cT phase and turns up at the 4 GPa where is the boundary pressure of T-cT phase. The onset of antiferromagnetic transition (TAF) shows little change up to 0.8 GPa by magnetization measurements. In the domain of M phase, the sample behaves like semiconductor at low temperature. No superconductivity is observed under the pressure investigated.
Bai Ligang
Chen Genfu
Dong Xiaoli
Liu Jing
Lu Wei
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