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Abstract
This paper investigates the temperature-field scale invariance of non-Fermi liquid thermodynamic, transport, and Hall quantities in the non-superconducting iron-pnictide Ba(Fe1/3Co1/3Ni1/3)2As2. The researchers find evidence of quantum criticality at zero temperature and applied magnetic field, characterized by a linear-in-temperature resistivity and a scattering rate obeying a universal scaling relation between temperature and applied magnetic fields. The isotropic field response and lack of pressure sensitivity suggest a unique quantum critical system unaffected by pairing instability.
Publisher
Communications Physics
Published On
Oct 15, 2020
Authors
Yasuyuki Nakajima, Tristin Metz, Christopher Eckberg, Kevin Kirshenbaum, Alex Hughes, Renxiong Wang, Limin Wang, Shanta R. Saha, I-Lin Liu, Nicholas P. Butch, Daniel Campbell, Yun Suk Eo, David Graf, Zhonghao Liu, Sergey V. Borisenko, Peter Y. Zavalij, Johnpierre Paglione
Tags
quantum criticality
Ba(Fe1/3Co1/3Ni1/3)2As2
non-Fermi liquid
temperature-field scale invariance
linear-in-temperature resistivity
scattering rate
isotropic field response
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