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Наука и учебаMagnetothermal Properties near Quantum Criticality in the Itinerant Metamagnet Sr3Ru2O7 (Springer Theses)

Magnetothermal Properties near Quantum Criticality in the Itinerant Metamagnet Sr3Ru2O7 (Springer Theses)
Название:Magnetothermal Properties near Quantum Criticality in the Itinerant Metamagnet Sr3Ru2O7 (Springer Theses)
Автор:Andreas W Rost
Издательство:Springer
ISBN:364214523X
Дата издания:2010-11-30
Страниц:145
Язык:Английский
Формат:PDF
Размер: 4.1 MB

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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