Thermal transport in the oxygenated magnetic superconductor, Eu1.5Ce0.5RuSr2Cu2O10+δ

B. D. Hennings; K. D.D. Rathnayaka; D. G. Naugle; I. Felner

doi:10.1016/S0921-4534(01)00955-8

Thermal transport in the oxygenated magnetic superconductor, Eu_1.5Ce_0.5RuSr₂Cu₂O_10+δ

B. D. Hennings
, K. D.D. Rathnayaka
, D. G. Naugle^*
, I. Felner

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The thermal conductivity and thermopower are reported for a hole doped Eu_1.5Ce_0.5RuSr₂Cu₂O_10+δ sample that has been annealed at 1100 K under an oxygen pressure of 54 atm. At T_c = 45 K superconductivity and weak ferromagnetism coexist (T_m = 180 K). Weak features in the thermopower, S(T), and thermal conductivity, κ(T), are observed both at T_m and at T* = 140 K. The thermopower begins to decrease sharply toward zero at T_c, and there is an extremely sharp increase of about 30% in the thermal conductivity at T_c. This "first order" transition may be related to the sudden appearance of a spontaneous vortex phase at T_c. A small shoulder is observed in κ(T) in the temperature range T = 5-13 K.

Original language	English
Pages (from-to)	253-258
Number of pages	6
Journal	Physica C: Superconductivity and its Applications
Volume	370
Issue number	4
DOIs	https://doi.org/10.1016/S0921-4534(01)00955-8
State	Published - May 2002

Keywords

Coexistence of superconductivity and magnetism
Magnetism
Ru-2122 compounds
Spontaneous vortex state
Transport properties

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10.1016/S0921-4534(01)00955-8

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title = "Thermal transport in the oxygenated magnetic superconductor, Eu1.5Ce0.5RuSr2Cu2O10+δ ",

abstract = "The thermal conductivity and thermopower are reported for a hole doped Eu1.5Ce0.5RuSr2Cu2O10+δ 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, κ(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 κ(T) in the temperature range T = 5-13 K.",

keywords = "Coexistence of superconductivity and magnetism, Magnetism, Ru-2122 compounds, Spontaneous vortex state, Transport properties",

author = "Hennings, \{B. D.\} and Rathnayaka, \{K. D.D.\} and Naugle, \{D. G.\} and I. Felner",

year = "2002",

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doi = "10.1016/S0921-4534(01)00955-8",

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T1 - Thermal transport in the oxygenated magnetic superconductor, Eu1.5Ce0.5RuSr2Cu2O10+δ

AU - Hennings, B. D.

AU - Rathnayaka, K. D.D.

AU - Naugle, D. G.

AU - Felner, I.

PY - 2002/5

Y1 - 2002/5

N2 - The thermal conductivity and thermopower are reported for a hole doped Eu1.5Ce0.5RuSr2Cu2O10+δ 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, κ(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 κ(T) in the temperature range T = 5-13 K.

AB - The thermal conductivity and thermopower are reported for a hole doped Eu1.5Ce0.5RuSr2Cu2O10+δ 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, κ(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 κ(T) in the temperature range T = 5-13 K.

KW - Coexistence of superconductivity and magnetism

KW - Magnetism

KW - Ru-2122 compounds

KW - Spontaneous vortex state

KW - Transport properties

UR - https://www.scopus.com/pages/publications/0036569721

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SN - 0921-4534

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 4

ER -

Thermal transport in the oxygenated magnetic superconductor, Eu_1.5Ce_0.5RuSr₂Cu₂O_10+δ

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Keywords

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