Multiple charge density wave states and magnetism in NdPt.sub.2./sub.Si.sub.2./sub. against the background of its nonmagnetic analog LaPt.sub.2./sub.Si.sub.2./sub.

0532152 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
Falkowski, Michal - Doležal, P. - Duverger-Nedellec, E. - Chamoreau, L.M. - Forté, J. - Andreev, Alexander V. - Havela, L.
Multiple charge density wave states and magnetism in NdPt₂Si₂ against the background of its nonmagnetic analog LaPt₂Si₂.
Physical Review B. Roč. 101, č. 17 (2020), s. 1-10, č. článku 174110. ISSN 2469-9950. E-ISSN 2469-9969
Grant CEP: GA ČR(CZ) GA19-00925S; GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: RPt₂Si₂ intermetallics * antiferromagnetism
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.036, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevB.101.174110

Results of structural, magnetic, thermodynamic, and electron transport measurements on single-crystalline NdPt2Si2 are reported. Temperature variations of crystal structure show two different charge density wave states. The structure modulation with the propagation vector q1 = (0.323, 0, 0) arises below T = 300 K. An additional modulation, with propagation vector q2 = (0.163, 0.163, 0.500), appears below T = 50 K in a first-order phase transition. This situation was found analogous to isostructural LaPt2Si2 with similar (but not identical) propagation vectors and characteristic temperatures. Nd magnetic moments order antiferromagnetically at TN= 1.5 K. Temperature dependence of electrical resistivity for current j applied along the a, b, and c axes is strongly affected by the first-order transition, inducing a Fermi surface gapping.
Trvalý link: http://hdl.handle.net/11104/0310745