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Resonant Torsion Magnetometry In Anisotropic Quantum Materials

Title: Resonant Torsion Magnetometry In Anisotropic Quantum Materials.
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Name(s): Modic, K. A., author
Bachmann, Maja D., author
Ramshaw, B. J., author
Arnold, F., author
Shirer, K. R., author
Estry, Amelia, author
Betts, J. B., author
Ghimire, Nirmal J., author
Bauer, E. D., author
Schmidt, Marcus, author
Baenitz, Michael, author
Svanidze, E., author
McDonald, Ross D., author
Shekhter, Arkady, author
Moll, Philip J. W., author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2018-09-28
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Unusual behavior in quantum materials commonly arises from their effective low-dimensional physics, reflecting the underlying anisotropy in the spin and charge degrees of freedom. Here we introduce the magnetotropic coefficient k = partial derivative F-2/partial derivative theta(2), the second derivative of the free energy F with respect to the magnetic field orientation theta in the crystal. We show that the magnetotropic coefficient can be quantitatively determined from a shift in the resonant frequency of a commercially available atomic force microscopy cantilever under magnetic field. This detection method enables part per 100 million sensitivity and the ability to measure magnetic anisotropy in nanogram-scale samples, as demonstrated on the Weyl semimetal NbP. Measurement of the magnetotropic coefficient in the spin-liquid candidate RuCl3 highlights its sensitivity to anisotropic phase transitions and allows a quantitative comparison to other thermodynamic coefficients via the Ehrenfest relations.
Identifier: FSU_libsubv1_wos_000445886000001 (IID), 10.1038/s41467-018-06412-w (DOI)
Keywords: transition, phase, order, superconductor, cantilever magnetometry, pseudogap, torque magnetometry
Publication Note: The publisher’s version of record is available at https://doi.org/10.1038/s41467-018-06412-w
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000445886000001
Owner Institution: FSU
Is Part Of: Nature Communications.
2041-1723
Issue: vol. 9

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Modic, K. A., Bachmann, M. D., Ramshaw, B. J., Arnold, F., Shirer, K. R., Estry, A., … Moll, P. J. W. (2018). Resonant Torsion Magnetometry In Anisotropic Quantum Materials. Nature Communications. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000445886000001