Direct observations of structural phase transitions in planar crystallized ion plasmas

被引：192

作者：

Mitchell, TB ^{[1
]}

Bollinger, JJ

Dubin, DHE

Huang, XP

Itano, WM

Baughman, RH

机构：

[1] Natl Inst Stand & Technol, Div Time & Frequency, Boulder, CO 80303 USA

[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[3] Allied Signal Inc, Res & Technol, Morristown, NJ 07962 USA

来源：

SCIENCE | 1998年 / 282卷 / 5392期

关键词：

D O I：

10.1126/science.282.5392.1290

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Laser-cooled Be-9(+) ions confined in two-dimensionally extended Lattice planes were directly observed, and the images were used to characterize the structural phases of the ions. Five different stable crystalline phases were observed, and the energetically favored structure could be sensitively tuned by changing the areal density of the confined ions. The experimental results are in good agreement with theoretical predictions for the planar (infinite in two dimensions) one-component plasma. Qualitatively similar structural phase transitions occur, or are predicted to occur, in other experimentally realizable planar systems.

引用

页码：1290 / 1293

页数：4

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