Magnetic field as a probe of gap energy scales in YBCO

Details Magnetic field as a probe of gap energy scales in YBCO Magnetic field as a probe of gap energy scales in YBCO

1999-11-10

arxiv.org/abs/cond-mat/9911145v1

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.62.15221

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.

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