Anomalous paramagnetic effects in the mixed state of LuNi2B2C

Tuson Park, A. Malinowski, M. F. Hundley, J. D. Thompson, Y. Sun, M. B. Salamon, Eun Mi Choi, Heon Jung Kim, Sung-Ik Lee, P. C. Canfield, and V. G. Kogan
Phys. Rev. B 71, 054511 – Published 18 February 2005

Abstract

Anomalous paramagnetic effects in dc magnetization were observed in the mixed state of LuNi2B2C, unlike any reported previously. It appears as a kink-like feature for H30kOe and becomes more prominent with increasing field. A specific heat anomaly at the corresponding temperature suggests that the magnetization anomaly is due to a true bulk transition. A magnetic flux transition from a square to an hexagonal lattice is consistent with the anomaly.

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  • Received 3 September 2004

DOI:https://doi.org/10.1103/PhysRevB.71.054511

©2005 American Physical Society

Authors & Affiliations

Tuson Park, A. Malinowski, M. F. Hundley, and J. D. Thompson

  • Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

Y. Sun* and M. B. Salamon

  • Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA

Eun Mi Choi, Heon Jung Kim, and Sung-Ik Lee

  • National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea

P. C. Canfield and V. G. Kogan

  • Ames Laboratory, Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA

  • *Current address: Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA.

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Issue

Vol. 71, Iss. 5 — 1 February 2005

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