Empirical correlation between tc and the temperature dependence of the electronic specific heat of superconducting la2-x3rx.Cuo4 at low temperatures

N. E. Hussey; J. P. Bird; D. F. Brewer; C. S. McMenamin; A. L. Thomson

doi:10.1209/0295-5075/29/5/006

Empirical correlation between t_c and the temperature dependence of the electronic specific heat of superconducting la₂-_x3r_x.Cuo₄ at low temperatures

N. E. Hussey
, J. P. Bird
, D. F. Brewer
, C. S. McMenamin
, A. L. Thomson

Department of Electrical Engineering

University at Buffalo

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

7 Scopus citations

Abstract

We report precise measurements of the specific heat of seven samples of superconducting La₂-_x3r_x.CuO₄ (0.05 0.27) between 0.09K and 1.5K. When phonon and nuclear terms are subtracted, the remaining, electronic, specific heat has the form a.Tn, where n < 1 for all samples and shows a smooth correlation with Tc, having a minimum value in the optimally doped sample, x = 0.15. We discuss the possibility that this unconventional form of the electronic specific heat arises from localisation of the quasi-particles at low temperatures.

Original language	English
Pages (from-to)	383-388
Number of pages	6
Journal	Europhysics Letters
Volume	29
Issue number	5
DOIs	https://doi.org/10.1209/0295-5075/29/5/006
State	Published - Feb 10 1995

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title = "Empirical correlation between tc and the temperature dependence of the electronic specific heat of superconducting la2-x3rx.Cuo4 at low temperatures",

abstract = "We report precise measurements of the specific heat of seven samples of superconducting La2-x3rx.CuO4 (0.05 0.27) between 0.09K and 1.5K. When phonon and nuclear terms are subtracted, the remaining, electronic, specific heat has the form a.Tn, where n < 1 for all samples and shows a smooth correlation with Tc, having a minimum value in the optimally doped sample, x = 0.15. We discuss the possibility that this unconventional form of the electronic specific heat arises from localisation of the quasi-particles at low temperatures.",

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T1 - Empirical correlation between tc and the temperature dependence of the electronic specific heat of superconducting la2-x3rx.Cuo4 at low temperatures

AU - Hussey, N. E.

AU - Bird, J. P.

AU - Brewer, D. F.

AU - McMenamin, C. S.

AU - Thomson, A. L.

PY - 1995/2/10

Y1 - 1995/2/10

N2 - We report precise measurements of the specific heat of seven samples of superconducting La2-x3rx.CuO4 (0.05 0.27) between 0.09K and 1.5K. When phonon and nuclear terms are subtracted, the remaining, electronic, specific heat has the form a.Tn, where n < 1 for all samples and shows a smooth correlation with Tc, having a minimum value in the optimally doped sample, x = 0.15. We discuss the possibility that this unconventional form of the electronic specific heat arises from localisation of the quasi-particles at low temperatures.

AB - We report precise measurements of the specific heat of seven samples of superconducting La2-x3rx.CuO4 (0.05 0.27) between 0.09K and 1.5K. When phonon and nuclear terms are subtracted, the remaining, electronic, specific heat has the form a.Tn, where n < 1 for all samples and shows a smooth correlation with Tc, having a minimum value in the optimally doped sample, x = 0.15. We discuss the possibility that this unconventional form of the electronic specific heat arises from localisation of the quasi-particles at low temperatures.

UR - https://www.scopus.com/pages/publications/84956247438

U2 - 10.1209/0295-5075/29/5/006

DO - 10.1209/0295-5075/29/5/006

M3 - Article

SN - 0295-5075

VL - 29

SP - 383

EP - 388

JO - Europhysics Letters

JF - Europhysics Letters

IS - 5

ER -

Empirical correlation between t_c and the temperature dependence of the electronic specific heat of superconducting la₂-_x3r_x.Cuo₄ at low temperatures

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