TY - JOUR
T1 - Simultaneous vanishing of nematic electronic state and structural orthorhombicity in NaFe1-x Cox As single crystals
AU - Deng, Qiang
AU - Liu, Jianzhong
AU - Xing, Jie
AU - Yang, Huan
AU - Wen, Hai Hu
N1 - Publisher Copyright:
©2015 American Physical Society
PY - 2015/1/30
Y1 - 2015/1/30
N2 - We have carried out in-plane resistivity measurements under a uniaxial pressure on NaFe1-xCoxAs single crystals. A clear distinction of the in-plane resistivity ρa and ρb with the uniaxial pressure along the b axis was discovered in the parent and underdoped regime with a doping level of up to about x=0.025±0.002. From the deviating point of ρa and ρb, and the unique kinky structure of resistivity, together with the published data, we determined the temperatures for the nematic, structural, and antiferromagnetic transitions. It is clearly shown that the nematic electronic state vanishes simultaneously with the structural transition. The antiferromagnetic state disappears, however, at a lower doping level. Our results, in combination with the data on Ba(Fe1-xCox)2As2, indicate a close relationship between nematicity and superconductivity.
AB - We have carried out in-plane resistivity measurements under a uniaxial pressure on NaFe1-xCoxAs single crystals. A clear distinction of the in-plane resistivity ρa and ρb with the uniaxial pressure along the b axis was discovered in the parent and underdoped regime with a doping level of up to about x=0.025±0.002. From the deviating point of ρa and ρb, and the unique kinky structure of resistivity, together with the published data, we determined the temperatures for the nematic, structural, and antiferromagnetic transitions. It is clearly shown that the nematic electronic state vanishes simultaneously with the structural transition. The antiferromagnetic state disappears, however, at a lower doping level. Our results, in combination with the data on Ba(Fe1-xCox)2As2, indicate a close relationship between nematicity and superconductivity.
UR - http://www.scopus.com/inward/record.url?scp=84922263434&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.91.020508
DO - 10.1103/PhysRevB.91.020508
M3 - Article
AN - SCOPUS:84922263434
SN - 1098-0121
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 2
M1 - 020508
ER -