このエントリーをはてなブックマークに追加
ID 21487
本文ファイル
著者
Matsuda, Kazuhiro
Tamura, Kozaburo
抄録(英)
We have measured x-ray diffraction and small-angle x-ray scattering of fluid rubidium by reducing electron density down to the range where the compressibility of the interacting electron gas has been theoretically predicted to become negative. Negative compressibility is closely associated with a negative value of the static dielectric function, which makes the screened Coulomb interaction among like charges overall attractive. It was clearly observed that the interatomic distance decreases in spite of the fact that mean interatomic distance increases with expansion, suggesting that an attractive interaction among like charges, ions in this case, is enhanced. These findings indicate that the observed structural features are evidence of the compressional instability of the 3D electron gas.
掲載誌名
Physical Review Letters
98巻
開始ページ
096401-1
終了ページ
096401-4
出版年月日
2007
出版者
American Physical Society
ISSN
0031-9007
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2007 The American Physical Society
関連情報URL
部局名
総合科学研究科