Phonon anomalies within the polar charge density wave phase of the structurally chiral superconductor Mo$_3$Al$_2$C

We employ polarization-resolved Raman spectroscopy to study the lattice dynamics of the polar charge density wave phase of the superconductor Mo $_{3}$ Al $_{2}$ C with structural chirality. We show the phononic signatures of the charge density wave transition at $T^{*}$ = 155,K in Mo $_{3}$ Al $_{2}$ C. The detailed temperature dependence of these phonon modes’ frequency, half width at half maximum, and integrated area below $T^{*}$ reveal anomalies at an intermediate temperature $T^{'} \sim$ 100,K, especially for the low-energy modes at 130 and 180,\cm-1. We discuss the origin of these phonon anomalies within the polar charge density wave phase of Mo $_{3}$ Al $_{2}$ C.

Phonon anomalies within the polar charge density wave phase of the structurally chiral superconductor Mo $_{3}$ Al $_{2}$ C

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Phonon anomalies within the polar charge density wave phase of the structurally chiral superconductor Mo $_{3}$ Al $_{2}$ C

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Phonon anomalies within the polar charge density wave phase of the structurally chiral superconductor Mo33​Al22​C

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Phonon anomalies within the polar charge density wave phase of the structurally chiral superconductor Mo33​Al22​C

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Phonon anomalies within the polar charge density wave phase of the structurally chiral superconductor Mo $_{3}$ Al $_{2}$ C

讲解博客

AI智能校验

Phonon anomalies within the polar charge density wave phase of the structurally chiral superconductor Mo $_{3}$ Al $_{2}$ C

讲解博客

AI智能校验