Volume 87, Number 3, August 2009
Article Number 37004
Number of page(s) 4
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
Published online 27 August 2009
EPL, 87 (2009) 37004
DOI: 10.1209/0295-5075/87/37004

A new “111” type iron pnictide superconductor LiFeP

Z. Deng, X. C. Wang, Q. Q. Liu, S. J. Zhang, Y. X. Lv, J. L. Zhu, R. C. Yu and C. Q. Jin

Institute of Physics, Chinese Academy of Sciences - Beijing, China

received 23 June 2009; accepted in final form 23 July 2009; published August 2009
published online 27 August 2009

A new iron pnictide LiFeP superconductor was found. The compound crystallizes into a Cu2Sb structure containing an “FeP” layer showing superconductivity with maximum Tc of 6 K. This is the first “111” type iron pnictide superconductor containing no arsenic. The new superconductor is featured with itinerant behavior at normal state that could be helpful to understand the novel superconducting mechanism of iron pnictide compounds.

74.70.-b - Superconducting materials.
74.20.Mn - Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.).
74.25.-q - Properties of type I and type II superconductors.

© EPLA 2009