Effect of controlled disorder on quasiparticle thermal transport in Bi2Sr2CaCu2O8

Article

关键词: SUPERCONDUCTING STATE;    SURFACE IMPEDANCE;    HEAT;    CONDUCTIVITY;    GAP;   

DOI  :  10.1103/PhysRevB.63.184509

来源: SCIE

【 摘 要 】

Low-temperature thermal conductivity kappa of optimally doped Bi2Sr2CaCu2O8 was studied before and after the introduction of point defects by electron irradiation. The amplitude of the linear component of kappa remains unchanged, confirming the universal nature of heat transport by zero-energy quasiparticles. The induced decrease in the absolute value of kappa at finite temperatures allows us to resolve a nonuniversal term in kappa due to conduction by finite-energy quasiparticles. The magnitude of this term provides an estimate of the quasiparticle lifetime at subkelvin temperatures.

【 授权许可】

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