In:
Applied Physics Letters, AIP Publishing, Vol. 100, No. 6 ( 2012-02-06)
Abstract:
We have explored the low-energy excitations in epitaxial thin films of Eu1-xSrxMnO3 [x = 0.50: spin-glass with short range charge-order and x = 0.58: long range charge-order] using terahertz t ime-domain spectroscopy. A finite frequency peak structure in optical conductivity is observed at ∼3.5 meV for both the films. While peak structure of x = 0.58 film possesses distinct properties of low-energy collective excitations of charge-density waves, the same is subtle and shallower with weaker peak conductivity for x = 0.50 film. These data, corroborated by magnetization, provide unambiguous evidence of the effect of range of charge-ordering, pinning, and disorder (induced by spin-glass state) on the manifestation of charge-density waves.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2012
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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