期刊
SCIENCE
卷 325, 期 5946, 页码 1360-1363出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1176627
关键词
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资金
- SUPA Graduate School
- UK Engineering and Physical Sciences Research Council
- Royal Society
- EPSRC [EP/G007357/1, EP/F044704/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/C511778/1, EP/F044704/1, EP/G007357/1] Funding Source: researchfish
Low-temperature phase transitions and the associated quantum critical points are a major field of research, but one in which experimental information about thermodynamics is sparse. Thermodynamic information is vital for the understanding of quantum many-body problems. We show that combining measurements of the magnetocaloric effect and specific heat allows a comprehensive study of the entropy of a system. We present a quantitative measurement of the entropic landscape of Sr3Ru2O7, a quantum critical system in which magnetic field is used as a tuning parameter. This allows us to track the development of the entropy as the quantum critical point is approached and to study the thermodynamic consequences of the formation of a novel electronic liquid crystalline phase in its vicinity.
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