Thermal transport in the oxygenated magnetic superconductor, Eu1.5Ce0.5RuSr2Cu2O10+ Academic Article uri icon

abstract

  • The thermal conductivity and thermopower are reported for a hole doped Eu1.5Ce0.5RuSr2Cu2O10+ sample that has been annealed at 1100 K under an oxygen pressure of 54 atm. At Tc = 45 K superconductivity and weak ferromagnetism coexist (Tm = 180 K). Weak features in the thermopower, S(T), and thermal conductivity, (T), are observed both at Tm and at T* = 140 K. The thermopower begins to decrease sharply toward zero at Tc, and there is an extremely sharp increase of about 30% in the thermal conductivity at Tc. This "first order" transition may be related to the sudden appearance of a spontaneous vortex phase at Tc. A small shoulder is observed in (T) in the temperature range T = 5-13 K. 2001 Elsevier Science B.V. All rights reserved.

published proceedings

  • Physica C: Superconductivity

author list (cited authors)

  • Hennings, B. D., Rathnayaka, K., Naugle, D. G., & Felner, I.

publication date

  • January 1, 2002 11:11 AM