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首页> 外文期刊>Physical Review, B. Condensed Matter >Phase transition from a d(x2-y2) to a d(x2-y2) +d(xy) superconductor
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Phase transition from a d(x2-y2) to a d(x2-y2) +d(xy) superconductor

机译:从d(x2-y2)到d(x2-y2)+ d(xy)超导体的相变

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We study the phase transition from a d(x2-y2) to a d(x2-y2)+d(xy) superconductor using the tight-binding model of two-dimensional cuprates. As the temperature is lowered past the critical temperature T-c, first a d(x2-y2) superconducting phase is created. With further reduction of temperature, the d(x2-y2)+d(xy) phase is created at temperature T = T-cl. We study the temperature dependencies of the order parameter, specific heat, and spin susceptibility in these mixed-angular-momentum states on a square lattice and on a lattice with orthorhombic distortion. The above-mentioned phase transitions are identified by two jumps in specific heat at T-c and T-cl. [S0163-1829(99)09037-2]. [References: 27]
机译:我们使用二维铜酸盐的紧密结合模型研究了从d(x2-y2)到d(x2-y2)+ d(xy)超导体的相变。当温度降低到超过临界温度T-c时,首先会形成d(x2-y2)超导相。随着温度的进一步降低,在温度T = T-cl时产生d(x2-y2)+ d(xy)相。我们研究了正方形晶格和正交畸变晶格上这些混合角动量态中阶参数,比热和自旋磁化率的温度依赖性。上述相变通过在T-c和T-cl处的比热的两次跳跃来识别。 [S0163-1829(99)09037-2]。 [参考:27]

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