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Magnetothermal Properties near Quantum Criticality in the Itinerant Metamagnet Sr3Ru2O7 [electronic resource] / by Andreas W. Rost.

By: Rost, Andreas W [author.].
Contributor(s): SpringerLink (Online service).
Material type: materialTypeLabelBookSeries: Springer Theses: Publisher: Berlin, Heidelberg : Springer Berlin Heidelberg, 2010Description: X, 145 p. online resource.Content type: text Media type: computer Carrier type: online resourceISBN: 9783642145247.Subject(s): Physics | Magnetism | Physics | Magnetism, Magnetic MaterialsDDC classification: 538 Online resources: Click here to access online
Contents:
Background Physics -- Thermodynamic Measurements of Entropy -- Design and Characterisation of Novel Experimental Setup -- Experimental Results and Discussion -- Conclusions and Future Work -- Appendices.
In: Springer eBooksSummary: The compound Sr3Ru2O7 of the strontium ruthenate family has been intensely studied because experimental evidence suggests that quantum fluctuations dominate the magnetic phase diagram in the vicinity of a novel low-temperature phase. In order to understand the interplay between the quantum critical fluctuations and the phase formation, comprehensive thermodynamic information is essential. This thesis reports the results of both specific-heat and magnetocaloric experiments carried out with a bespoke experimental apparatus whose design particularly addresses the demanding constraints of the low-temperature, high-magnetic-field environment. The experimental data give evidence for unusual thermodynamic properties of the novel phase and its bounding phase transitions. Furthermore they show that the phase formation takes place against a background of strongly peaking entropy, suggesting that quantum criticality plays a key role in the physics of this system.
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Background Physics -- Thermodynamic Measurements of Entropy -- Design and Characterisation of Novel Experimental Setup -- Experimental Results and Discussion -- Conclusions and Future Work -- Appendices.

The compound Sr3Ru2O7 of the strontium ruthenate family has been intensely studied because experimental evidence suggests that quantum fluctuations dominate the magnetic phase diagram in the vicinity of a novel low-temperature phase. In order to understand the interplay between the quantum critical fluctuations and the phase formation, comprehensive thermodynamic information is essential. This thesis reports the results of both specific-heat and magnetocaloric experiments carried out with a bespoke experimental apparatus whose design particularly addresses the demanding constraints of the low-temperature, high-magnetic-field environment. The experimental data give evidence for unusual thermodynamic properties of the novel phase and its bounding phase transitions. Furthermore they show that the phase formation takes place against a background of strongly peaking entropy, suggesting that quantum criticality plays a key role in the physics of this system.

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