Doná Enrico, Loerting Thomas, Penner Simon, Minca Mariana, Menzel Alexander, Bertel Erminald, Schoiswohl Johannes, Berkebile Steven, Netzer Falko P, Zucca Rinaldo, Redinger Josef
Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria.
Phys Rev Lett. 2007 May 4;98(18):186101. doi: 10.1103/PhysRevLett.98.186101. Epub 2007 May 1.
Phase transitions in a quasi-one-dimensional surface system on a metal substrate are investigated as a function of temperature. Upon cooling the system shows a loss of long-range order, fluctuations, and a transition into an inhomogeneous ground state due to competition of local adsorbate-adsorbate interactions with an incommensurate charge density wave. This agrees with a general phase diagram for correlated systems and high-temperature superconductors. The model surface system allows direct imaging of the fluctuations and the glassy inhomogeneous ground state by scanning tunneling microscopy.
研究了金属衬底上准一维表面系统中的相变与温度的函数关系。冷却时，由于局部吸附质 - 吸附质相互作用与非公度电荷密度波的竞争，系统显示出长程序的丧失、涨落，并转变为非均匀基态。这与相关系统和高温超导体的一般相图相符。该模型表面系统允许通过扫描隧道显微镜直接成像涨落和玻璃态非均匀基态。
