The itinerant state of carriers in pnictide NaCu2P2: Role of distortion in CuP4 tetrahedraJ. G. Guo, G. Wang, S. F. Jin, K. X. Zhu, S. C. Wang and X. L. ChenEPL, 92 5 (2010) 57002DOI: https://doi.org/10.1209/0295-5075/92/57002