Anomalous behavior in the superconducting state of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">CeCo</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>

J.-G. Park; K. A. McEwen; P. C. Canfield; Seok-Hoon Lee

doi:10.1103/PhysRevB.65.014514

Anomalous behavior in the superconducting state of ${CeCo}_{2}$

J.-G. Park, K. A. McEwen, P. C. Canfield, and Seok-Hoon Lee

Phys. Rev. B 65, 014514 – Published 7 December 2001

Abstract

We present experimental evidence of abnormal behavior in the mixed state of ${CeCo}_{2} .$ The temperature dependence of the magnetic anomaly just below $H_{c 2}$ compares very well with that of the superconducting order parameter, which we consider as experimental evidence for a strong correlation between the two quantities. From the sample dependence of the anomaly and an electron probe microanalysis of each sample, we conclude that it is likely to be due to impurities present in the samples.

Received 30 May 2000

DOI:https://doi.org/10.1103/PhysRevB.65.014514

Authors & Affiliations

J.-G. Park^*

Department of Physics and Institute of Basic Science, Sung Kyun Kwan University, Suwon 440-746, Korea;
Department of Physics, Inha University, Incheon 402-751, Korea;
Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-742, Korea

K. A. McEwen