Physics
Document Type
Conference Proceeding
Abstract
We have recently reported the first direct calorimetric observation of a magnetic-field-induced first-order phase transition into a high-field FFLO superconducting state at the Clogston-Chandrasekar 'Pauli' paramagnetic limitHp in a 2D superconductor κ-(BEDT-TTF)2Cu(NCS)2. The high-field state is both higher entropy and strongly paramagnetic, as thermodynamically required for the FFLO state. Here we compare our results with theoretical predictions for the field dependence of the high-field FFLO state in the 2D limit, revealing tentative evidence for transitions between FFLO states of differing order parameter. We also present calorimetric evidence for a 1st order phase transition into the FFLO state for a second 2D organic superconductor: β″-(BEDT-TTF)2SF5(CH)2(CF)2(SO)3.
Publication Title
Journal of Physics: Conference Series
Publication Date
4-19-2018
Volume
969
Issue
1
ISSN
1742-6588
DOI
10.1088/1742-6596/969/1/012072
Keywords
FFLO, superconductivity, magnetic fields
Repository Citation
Fortune, N. A.; Agosta, C. C.; Hannahs, S. T.; and Schleuter, J. A., "Magnetic-field-induced 1st order transition to FFLO state at paramagnetic limit in 2D superconductors" (2018). Physics. 20.
https://commons.clarku.edu/faculty_physics/20
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Copyright Conditions
Fortune, N. A., Agosta, C. C., Hannahs, S. T., & Schleuter, J. A. (2018, March). Magnetic-field-induced 1st order transition to FFLO state at paramagnetic limit in 2D superconductors. In Journal of Physics: Conference Series (Vol. 969, No. 1, p. 012072). IOP Publishing.
