Multiple charge density wave states and magnetism in NdPt2Si2 against the background of its nonmagnetic analog LaPt2Si2

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...

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Published in:Physical review. B 2020-05, Vol.101 (17), p.1
Main Authors: Falkowski, M, Doležal, P, Duverger-Nédellec, E, Chamoreau, L-M, té, J, Andreev, A V, Havela, L
Format: Article
Language:English
Subjects:
Antiferromagnetism
Charge density waves
Crystal structure
Electron transport
Fermi surfaces
Magnetic moments
Magnetism
Modulation
Neodymium
Phase transitions
Propagation
Single crystals
Temperature dependence
Wave propagation
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container_issue 17
container_start_page 1
container_title Physical review. B
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creator Falkowski, M
Doležal, P
Duverger-Nédellec, E
Chamoreau, L-M
té, J
Andreev, A V
Havela, L
description 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.
doi_str_mv 10.1103/PhysRevB.101.174110
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subjects Antiferromagnetism
Charge density waves
Crystal structure
Electron transport
Fermi surfaces
Magnetic moments
Magnetism
Modulation
Neodymium
Phase transitions
Propagation
Single crystals
Temperature dependence
Wave propagation
title Multiple charge density wave states and magnetism in NdPt2Si2 against the background of its nonmagnetic analog LaPt2Si2
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