کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1810911 | 1025574 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Charge-density fluctuations probed by vibronic modes of K0.3MoO3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Polarized reflection measurements have been performed on the charge-density-wave compound K0.3MoO3 from room temperature down to T=50 K. For the first time, the least conducting direction (perpendicular to the planes of MoO6-octahedrons) was investigated in the entire infrared range of frequency. The diatomic MoO stretching vibrations centered around 940 cm−1 exhibit an unusual temperature dependence; below some characteristic temperature T⁎≈200K the line shape changes significantly. The observed features are attributed to change-density-wave fluctuations that are present well above the charge-density-wave transition TCDWTCDW, and start to develop short-range order at T⁎.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 11, 1 June 2012, Pages 1823–1826
Journal: Physica B: Condensed Matter - Volume 407, Issue 11, 1 June 2012, Pages 1823–1826
نویسندگان
Rebecca Beyer, Neven Barišić, Martin Dressel,