TY - JOUR
T1 - Scaling between magnetic and lattice fluctuations in iron pnictide superconductors
AU - Fernandes, Rafael M.
AU - Böhmer, Anna E.
AU - Meingast, Christoph
AU - Schmalian, Jörg
PY - 2013/9/24
Y1 - 2013/9/24
N2 - The phase diagram of the iron arsenides is dominated by a magnetic and a structural phase transition, which need to be suppressed in order for superconductivity to appear. The proximity between the two transition temperature lines indicates correlation between these two phases, whose nature remains unsettled. Here, we find a scaling relation between nuclear magnetic resonance and shear modulus data in the tetragonal phase of electron-doped Ba(Fe1-xCox)2As2 compounds. Because the former probes the strength of magnetic fluctuations while the latter is sensitive to orthorhombic fluctuations, our results provide strong evidence for a magnetically driven structural transition.
AB - The phase diagram of the iron arsenides is dominated by a magnetic and a structural phase transition, which need to be suppressed in order for superconductivity to appear. The proximity between the two transition temperature lines indicates correlation between these two phases, whose nature remains unsettled. Here, we find a scaling relation between nuclear magnetic resonance and shear modulus data in the tetragonal phase of electron-doped Ba(Fe1-xCox)2As2 compounds. Because the former probes the strength of magnetic fluctuations while the latter is sensitive to orthorhombic fluctuations, our results provide strong evidence for a magnetically driven structural transition.
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U2 - 10.1103/PhysRevLett.111.137001
DO - 10.1103/PhysRevLett.111.137001
M3 - Article
AN - SCOPUS:84884681796
SN - 0031-9007
VL - 111
JO - Physical review letters
JF - Physical review letters
IS - 13
M1 - 137001
ER -