Pressure Effects in the Iron Chalcogenides

In FeSe 1− x Te x , the superconducting and magnetic properties can be tuned not only by the Se-Te ratio  x , but also by application of hydrostatic pressure. It was seen that both parent compounds FeSe and FeTe are extremely sensitive on hydrostatic pressure and show quite unexpected effects. The a...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2014-04, Vol.27 (4), p.965-968
Main Authors: Bendele, M., Pomjakushina, E., Conder, K., Khasanov, R., Keller, H.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Chalcogenides
Characterization and Evaluation of Materials
Condensed Matter Physics
Electronics
Hydrostatic pressure
Iron
Low pressure
Magnetic Materials
Magnetic properties
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
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Summary:In FeSe 1− x Te x , the superconducting and magnetic properties can be tuned not only by the Se-Te ratio  x , but also by application of hydrostatic pressure. It was seen that both parent compounds FeSe and FeTe are extremely sensitive on hydrostatic pressure and show quite unexpected effects. The at ambient pressure superconducting FeSe exhibits at pressures above 1 GPa a phase, where superconductivity and antiferromagnetism seem to coexist on an atomic scale. The antiferromagnetic FeTe, on the other hand, transforms from a low pressure antiferromagnet to a ferromagnet above 2 GPa. These pressure studies underline the close relation of the electronic phases to the crystallographic properties, since in these simple compounds already minor changes in the structure for example by application of pressure lead to a drastic change of the superconducting and magnetic properties.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-013-2419-6