外磁场中超导约瑟夫森结阵列中冻结起伏的涡旋固相
Vortex solid phase with frozen undulations in superconducting Josephson-junction arrays in external magnetic fields
摘要：
在各向异性耦合的外磁场作用下，从理论上发现了阻挫约瑟夫森结阵列（JJA）中具有自生随机性的涡旋固体。由外部磁场引起的涡旋发展出平行于较弱耦合方向的条纹。分析表明，存在一个连续的、无隙的亚稳态带，其中条纹由横向起伏随机变形。具有处于亚稳态的冻结波动的涡旋固体沿着较强耦合的方向自由滑动，从而即使在零温度下也破坏相的有序性，但是沿着较弱耦合的方向被卡住。
英文摘要：
A vortex solid with self-generated randomness is found theoretically in a frustrated Josephson junction array (JJA) under external magnetic field with anisotropic couplings. Vorticies induced by external magnetic field develop stripes parallel to the direction of weaker coupling. It is shown analytically that there is a continuous, gapless band of metastable states in which stripes are deformed randomly by transverse undulation. The vortex solid with the frozen undulation in a metastable state freely slides along the direction of stronger coupling, thereby destroying ordering of phases even at zero temperature, but is jammed along the direction of weaker coupling.
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