THEORY OF DISCOMMENSURATIONS AND COMMENSURATE-INCOMMENSURATE CHARGE-DENSITY WAVE-PHASE TRANSITION
THEORY OF DISCOMMENSURATIONS AND COMMENSURATE-INCOMMENSURATE CHARGE-DENSITY WAVE-PHASE TRANSITION
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DOI：
10.1103/physrevb.14.1496
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发表时间：
1976-01-01
影响因子：
3.7
通讯作者：
MCMILLAN, WL
中科院分区：
文献类型：
--
作者：
MCMILLAN, WL
发现锁定相变附近的无公度电荷密度波(CDW)的最低能态是扭曲的平面波。在弱耦合极限下找到了精确解，并且锁定相变是连续的。在公度连续波中发现了一个新的缺陷：相对于完全锁定的连续波，连续波的相位滑移了2π3。锁定相变被解释为在无公度状态下具有有限不公度密度的缺陷熔化相变。
The lowest-energy state of the incommensurate charge density wave (CDW) near the lock-in transition is found to be a distorted plane wave. An exact solution is found in the weak-coupling limit and the lock-in phase transition is continuous. A new defect is found in the commensurate CDW, a discommensuration, in which the phase of the CDW slips by 2 π 3 relative to the perfectly locked in CDW. The lock-in phase transition is interpreted as a defect melting transition with a finite density of discommensurations in the incommensurate state.