Quantum phase transition inside the superconducting dome of Ba(Fe1−xCox)2As2 from diamond-based optical magnetometry

Unconventional superconductivity often emerges in close proximity to a magnetic instability. Upon suppressing the magnetic transition down to zero temperature by tuning the carrier concentration, pressure, or disorder, the superconducting transition temperature T _c acquires its maximum value. A maj...

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Bibliographic Details

Published in:	New Journal of Physics
Main Authors:	K R Joshi, N M Nusran, M A Tanatar, K Cho, S L Bud’ko, P C Canfield, R M Fernandes, A Levchenko, R Prozorov
Format:	Article
Language:	English
Published:	IOP Publishing 2020-01-01
Subjects:	NV-centers London penetration depth iron-pnictides optical magnetometry quantum phase transition
Online Access:	https://doi.org/10.1088/1367-2630/ab85a9