2e or not 2e: Flux Quantization in the Resonating Valence Bond State
2e or not 2e: Flux Quantization in the Resonating Valence Bond State
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2e 或非 2e：共振价键态中的通量量化
DOI：
10.1209/0295-5075/6/4/013
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发表时间：
1988
期刊：
影响因子：
1.8
通讯作者：
J. Sethna
中科院分区：
文献类型：
--
作者：
S. Kivelson;D. Rokhsar;J. Sethna
“共振价键”（RVB）状态被提出作为解释高温超导的基础。最近，我们描述了这种状态下的电荷和自旋激发，并证明它们是孤子，与聚乙炔中的孤子完全相似。由于带电孤子是+ e玻色子，人们自然会问，通量量子化是否会像传统的BCS超导一样，以hc/2e为单位发生，还是只会以更大的hc/e为单位发生。我们在这里表明，除非发生类似于分数量子化霍尔效应中发现的合作环交换的凝聚，否则以hc/2e为单位的通量量子化将会发生。
The "resonating valence bond" (RVB) state has been proposed as the basis for an explanation of high-temperature superconductivity. Recently, we have described the charge and spin excitations about this state, and have shown that they are solitons, precisely analogous to those found in polyacetylene. Since the charged solitons are + e bosons, it is natural to ask whether flux quantization will occur in units of hc/2e, as in traditional BCS superconductivity, or will come only in larger units of hc/e. We show here that flux quantization in units of hc/2e will occur unless a condensation of cooperative ring exchanges occurs analogous to that found in the fractional quantized Hall effect.