期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 86, 期 6, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.7566/JPSJ.86.063704
关键词
-
资金
- JSPS
- Japan Society for the Promotion of Science (JSPS) [26287082, 15H01047, 15H05886, 16K05451]
- Grants-in-Aid for Scientific Research [16K05451, 15H05886] Funding Source: KAKEN
The specific heat of two polymorphs of BaPd2As2 was measured. The ThCr2Si2-type polymorph (space group I4/mmm, D-4h(17), No. 139) is a previously reported superconductor with a transition temperature T-c similar or equal to 3: 5 K, while the CeMg2Si2-type polymorph (P4/mmm, D-4h(1), No. 123) is a normal metal and does not exhibit superconductivity down to 1.8 K. Our results revealed that the ThCr2Si2-type has an anomalously low Debye temperature, indicative of soft phonons, compared to the CeMg2Si2-type. Moreover, a large specific-heat jump at T-c indicated that the superconductivity of ThCr2Si2-type is a strong-coupling type, which is likely derived from soft phonons.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据