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与一维体系不同,二维体系费密面的叠套是不完全的,此种叠套的偏离会显著地减弱体系的不稳定性.定量地研究了叠套偏离对Peierls相变的影响,并确定了叠套偏离的限度,超过此值,Peierls相变被抑制,这有利于进入超导态.
Different from one-dimensional system, two-dimensional system Fermi surface of the stack is not complete, such a stack of deviations will significantly reduce the system instability. The influence of stacking deviations on Peierls transformation was studied quantitatively, and the limit of stack deviations was determined. Peierls transition was suppressed beyond this value, which favored the entry of superconductivity.