Spectroscopic study of stripe pattern formation induced by current injection in a charge-transfer complex

Physical Review B - Condensed Matter and Materials Physics

Volumn 70, Issue 11, 2004, Pages

  Okimoto, Y ^a   Kumai, R ^a   Saitoh, E ^c,d   Izumi, M ^b,e   Horiuchi, S ^a   Tokura, Y ^a,c  

^a NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY AIST   (Japan)

^b JT RES CENTER FOR ATOM TECHNOLOGY   (Japan)

^c UNIVERSITY OF TOKYO   (Japan)

^d KEIO UNIVERSITY   (Japan)

^e UNIVERSITY OF TOKYO   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

METAL; METHANE; POTASSIUM;

ARTICLE; ATOMIC FORCE MICROSCOPY; CRYSTAL; DIMERIZATION; ELECTRON; ENERGY; PHASE SEPARATION; RAMAN SPECTROMETRY; SPECTROSCOPY;

EID: 19744381360     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.70.115104     Document Type: Article

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22. It was impossible to make the measured area smaller because of the diffraction limit of our microscope in the mid reflectivity measurements.
23. c that can be detected by rapid probes, such as optical spectroscopy.7
24. It is reasonable to consider that the stripe region represents "current path",9 and the reflectance measurements in Figs. 2 and 3 show the difference of the spectra between in-and outside the current path. Under these circumstances, a phonon spectrum beside the stripe region (without the current) might be different from that in the bright purple part in the stripe region (with the current), even though they have the similar color.
25. We assumed the averaged temperature on the stripe is ≈380 K, considering the center of the Raman peak on stripe (see dotted line in Fig. 4).
26. -1 with the 10% change of the Raman intensity). Perhaps this small discrepancy results from the difference of the experimental conditions, e.g., flowing current and/or temperature. Especially, temperature of the sample surface is almost uniform in the stripes, so the temperature in the bright region is the same as in the dark region. Compared with the simple temperature dependence, it is reasonable to consider that the uniformity of temperature makes the difference of the spectra between the bright (dimerized) and dark (less-dimerized) part in the stripes smaller.
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