Charge density wave like behavior with magnetic ordering in orthorhombic S m2 R u3 G e5

C. N. Kuo, C. J. Hsu, C. W. Tseng, W. T. Chen, S. Y. Lin, W. Z. Liu, Y. K. Kuo, C. S. Lue

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

In order to explore the physical properties of orthorhombic U2Co3Si5-type Sm2Ru3Ge5, we have carried out a combined study by means of the measurements of the magnetic susceptibility χ, electrical resistivity ρ, Seebeck coefficient S, and specific heat Cp. An antiferromagnetic phase transition at the Néel temperature TN≃7K has been identified by all measured physical quantities. Remarkably, another intrinsic phase transition characterized by marked features has been discerned at T∗≃240K. The distinct peak in Cp at T∗ with the lack of thermal hysteresis behavior provides strong evidence for the second-order phase transition in nature. It is noticed that the observations near T∗ are reminiscent of a typical charge density wave (CDW) ordering. We compared the experimental results with those observed in a polymorph of Sm2Ru3Ge5 with the tetragonal Sc2Fe3Si5-type structure which was recently reported to exhibit the coexistence of magnetic and CDW phase transitions. On this basis, the observed features in orthorhombic Sm2Ru3Ge5 have been discussed by comparing with the results in tetragonal Sm2Ru3Ge5 as well as other CDW systems.

原文English
文章編號155140
期刊Physical Review B
101
發行號15
DOIs
出版狀態Published - 2020 四月 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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