Data for "Nematic quantum criticality in an Fe-based superconductor revealed by strain-tuning"

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Abstract/Contents

Abstract: Quantum criticality has been invoked as being essential to the understanding of a wide range of exotic electronic behavior, including heavy Fermion and unconventional superconductivity, but conclusive evidence of quantum critical fluc- tuations has been elusive in many materials of current interest. An expected characteristic fea- ture of quantum criticality is power law behavior of thermodynamic quantities as a function of a non-thermal tuning parameter close to the quan- tum critical point (QCP). In the present work, we observe power law behavior of the critical temperature of the coupled nematic/structural phase transition as a function of uniaxial stress in a representative family of Fe-based supercon- ductors. Our measurements provide direct evi- dence of quantum critical nematic fluctuations in this material. Furthermore, these quantum criti- cal fluctuations are not confined within a narrow regime around the QCP, but extend over a wide range of temperatures and tuning parameters.

Subject	Fe-based superconductor
Subject	Electronic Nematicity
Subject	Quantum Criticality
Subject	Stanford University. Department of Applied Physics
Subject	School of Humanities and Sciences
Genre	Data
Genre	Data sets
Genre	Dataset

Related item	Preferred citation https://arxiv.org/abs/2003.12202
DOI	https://doi.org/10.25740/wg432jy0214
Location	https://purl.stanford.edu/wg432jy0214

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Preferred citation: Worasaran, Thanapat and Ikeda, Matthias S. and Palmstrom, Johanna C. P. and Straquadine, Joshua A. W. and Kivelson, Steven A. and Fisher, Ian R. (2021). Data for "Nematic quantum criticality in an Fe-based superconductor revealed by strain-tuning". Stanford Digital Repository. Available at: https://purl.stanford.edu/wg432jy0214 https://doi.org/10.25740/wg432jy0214

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