Specific heat of CeRhIn5: Pressure-driven evolution of the ground state from antiferromagnetism to superconductivity
Specific heat of CeRhIn5: Pressure-driven evolution of the ground state from antiferromagnetism to superconductivity
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CeRhIn5 的比热：压力驱动的基态从反铁磁性到超导性的演化
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
J. Thompson
中科院分区：
文献类型：
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作者：
R. Fisher;F. Bouquet;N. Phillips;M. Hundley;P. G. Pagliuso;J. Sarrao;Z. Fisk;J. Thompson
对反铁磁CeRhIn{sub 5}的比热测量，从21 kbar到21 kbar，从21 kbar到70 kOe，显示出从低于15 kbar的反铁磁基态到高于15 kbar的超导基态的不连续变化，并表明它伴随着弱的热力学一级跃迁。体超导性出现，显然与d波电子配对，在临界压力，15千巴;随着压力的进一步增加，在比热的剩余温度比例项消失。
Measurements of the specific heat of antiferromagnetic CeRhIn{sub 5}, to 21 kbar, and for 21 kbar to 70 kOe, show a discontinuous change from an antiferromagnetic ground state below 15 kbar to a superconducting ground state above, and suggest that it is accompanied by a weak thermodynamic first-order transition. Bulk superconductivity appears, apparently with d-wave electron pairing, at the critical pressure, 15 kbar; with further increase in pressure a residual temperature-proportional term in the specific heat disappears.