Journal
PHYSICAL REVIEW B
Volume 80, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.205201
Keywords
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Funding
- MEXT [16654049, 18684014, 16076207, 20110005]
- Grants-in-Aid for Scientific Research [18684014, 16076207, 16654049, 20110005] Funding Source: KAKEN
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Ferroelectricity in an organic charge-transfer compound, tetrathiafulvalene-p-chloranil (TTF-CA), originating from the one-dimensional valence and lattice instabilities, has been investigated by an electroreflectance (ER) method. Microscopic ER spectroscopy in the visible region enables real-space observations of both ferroelectric domain structures with a few hundred micrometers in size and depinning of the domain walls under strong electric fields. In addition, from ER spectroscopy in the infrared molecular-vibration region, we demonstrate that field-induced changes in the dimeric molecular displacement as well
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