ISIS Neutron and Muon Source Data Journal

Probing the dimensional crossover of critical fluctuations in ferromagnetic quantum critical system UCoSi2

Abstract: In recent times, study of quantum critical point(QCP) and quantum phase transition(QPT) has become one of the most appealing research topics. Notably, near the critical point one observes unconventional power-law type divergence of different physical properties such as electrical resistivity or heat capacity. Such unusual behavior solely depend on the dimensionality of the critical spin fluctuations. We have recently investigated UCoSi2 which is proposed to be situated very close to ferromagnetic (FM) quantum critical point. Interestingly, it exhibits a dimensional crossover of critical fluctuations from 2D-FM to 3D-AFM which has not been experimentally observed before. μSR is an excellent technique to probe such spin fluctuations. Therefore, we propose to carry out μSR measurements on UCoSi2 to verify this dimensional crossover and study the spin dynamics.

Principal Investigator: Professor Dariusz Kaczorowski
Local Contact: Dr Mark Telling
Experimenter: Dr Devashi Adroja
Experimenter: Dr Daniel Gnida
Experimenter: Dr Debarchan Das
Experimenter: Dr Grzegorz Chajewski

DOI: 10.5286/ISIS.E.RB1920098

ISIS Experiment Number: RB1920098

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Dariusz Kaczorowski et al; (2020): Probing the dimensional crossover of critical fluctuations in ferromagnetic quantum critical system UCoSi2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920098

Data is released under the CC-BY-4.0 license.