Magnetic field as a probe of gap energy scales inYBa2Cu3O7−x Academic Article uri icon

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abstract

  • Among high T_c materials, the YBCO (YBa_2Cu_3O_{7-x}) compounds are special since they have superconducting chains as well as planes. We show that a discontinuity in the density of states as a function of magnetic field may appear at a new energy scale, characteristic of the chain and distinct from that set by the d wave gap. This is observable in experimental studies of the thermodynamical properties of these systems, such as the specific heat.

publication date

  • December 1, 2000