Real-space observation of nanoscale inhomogeneities and fluctuations in a phase transition of a surface quasi-one-dimensional system: In/Si(111)

Title
Real-space observation of nanoscale inhomogeneities and fluctuations in a phase transition of a surface quasi-one-dimensional system: In/Si(111)
Authors
Lee, G.; Guo, J.D.; Plummer, E.W.
Keywords
CHARGE-DENSITY-WAVE, QUANTUM CHAINS
Issue Date
2005-09
Publisher
AMERICAN PHYSICAL SOC
Abstract
We report direct visualizations of the fluctuation and condensation phenomena in a phase transition of a one-dimensional (1D) In/Si(111) system using scanning tunneling microscopy. The high-temperature (HT) and low-temperature (LT) phases are found to coexist on the nanometer scale near T-c. Above T-c, 1D LT-phase stripes fluctuate in the HT phase and coalesce into 2D islands with decreasing temperature. They condense to make the LT phase below T-c. Small areas of the HT phase also exist below T-c. The observed temperature-dependent evolution of the nanoscale inhomogeneities is consistent with the theoretical predictions for a second-order phase transition.
URI
http://dspace.inha.ac.kr/handle/10505/1985
ISSN
0031-9007
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
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