Evidence of structural modulations induced by a charge density wave transition in orthorhombic Sm2Ru3Ge5

被引：3

作者：

Sokkalingam, Rajkumar ^{[1
]}

Lingannan, Govindaraj ^{[1
]}

Sundaramoorthy, Muthukumaran ^{[1
,2
]}

Lue, C. S. ^{[3
,4
]}

Kuo, C. N. ^{[3
,4
]}

Joseph, Boby ^{[2
]}

Arumugam, Sonachalam ^{[1
,5
]}

机构：

[1] Bharathidasan Univ, Sch Phys, Ctr High Pressure Res, Tiruchirappalli 620024, India

[2] Elettra Sincrotrone Trieste SCPA, SS 14, Km 163-5, Area Sci Pk, I-34149 Basovizza, Italy

[3] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[4] Natl Sci & Technol Council, Taiwan Consortium Emergent Crystalline Mat, Taipei 10622, Taiwan

[5] Tamil Nadu Open Univ, Chennai, India

来源：

SOLID STATE COMMUNICATIONS | 2023年 / 372卷

关键词：

Orthorhombic ternary Sm2Ru3Ge5; CDW transition; Synchrotron powder diffraction; Temperature dependent lattice parameters; CRYSTAL-STRUCTURE; STANNIDES;

D O I：

10.1016/j.ssc.2023.115293

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the electrical resistivity and x-ray diffraction characterization of ternary Sm2Ru3Ge5 compound with orthorhombic U2Co3Si5-type structure. In agreement with the earlier observations, our electrical resistivity measurements revealed the presence of three anomalies, viz. 239.3, 27.8 and 7 K. The first one is connected to a charge density wave (CDW) transition, while the last one is connected to an antiferromagnetic (AFM) transition. Our systematic synchrotron powder diffraction data in the temperature range 390 to 160 K revealed that the system remains in the orthorhombic symmetry in this temperature range. The data however revealed a clear discontinuity in the lattice parameters below similar to 233 K. This observation indicates a close connection between the CDW transition and structural modulation in this system.

引用

页数：5

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