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Extreme sensitivity of superconductivity to stoichiometry inFe1+δSe
Open accessAbstract
The recently discovered iron arsenide superconductors appear to display a universal set of characteristic features, including proximity to a magnetically ordered state and robustness of the superconductivity in the presence of disorder. Here we show that superconductivity in ${\text{Fe}}_{1+\ensuremath{\delta}}\text{Se}$, which can be considered the parent compound of the superconducting arsenide family, is destroyed by very small changes in stoichiometry. Further, we show that nonsuperconducting ${\text{Fe}}_{1+\ensuremath{\delta}}\text{Se}$ is not magnetically ordered down to 5 K. These results suggest that robust superconductivity and immediate instability against an ordered magnetic state should not be considered as intrinsic characteristics of iron-based superconducting systems.
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Cited by
Coupling of electronic and magnetic properties in Fe1+y(Te1−xSex)
Hu, J., Liu, T. J., Qian, B., & Mao, Z. Q. (2013) · Physical Review B · doi:10.1103/physrevb.88.094505 · Cited by 26
Metadata
- Authors
- McQueen, T. M., Huang, Q., Ksenofontov, V., Felser, C., Xu, Q., Zandbergen, H., Hor, Y. S., Allred, J., Williams, A. J., Qu, D., Checkelsky, J., Ong, N. P., & Cava, R. J.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2009-01-29
- Volume
- 79
- Issue
- 1
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2171303374
- Cited by
- 653
- References
- 0
- FWCI
- 30.04
- Type
- journal article
- Language
- en
- Open access
- bronze
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- McQueen, T. M., Huang, Q., Ksenofontov, V., Felser, C., Xu, Q., Zandbergen, H., Hor, Y. S., Allred, J., Williams, A. J., Qu, D., Checkelsky, J., Ong, N. P., & Cava, R. J. (2009). Extreme sensitivity of superconductivity to stoichiometry inFe1+δSe. Physical Review B. https://doi.org/10.1103/physrevb.79.014522
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