Metamagnetism and Critical Fluctuations in High Quality Single Crystals of the Bilayer Ruthenate <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>Sr</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow><mrow><msub><mrow><mi>Ru</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi>O</mi></mrow><mrow><mn>7</mn></mrow></msub></mrow></math></span>

R. S. Perry; L. M. Galvin; S. A. Grigera; L. Capogna; A. J. Schofield; A. P. Mackenzie; M. Chiao; S. R. Julian; S. I. Ikeda; S. Nakatsuji; Y. Maeno; C. Pfleiderer

doi:10.1103/PhysRevLett.86.2661

Metamagnetism and Critical Fluctuations in High Quality Single Crystals of the Bilayer Ruthenate ${Sr}_{3} {Ru}_{2} O_{7}$

R. S. Perry, L. M. Galvin, S. A. Grigera, L. Capogna, A. J. Schofield, A. P. Mackenzie, M. Chiao, S. R. Julian, S. I. Ikeda, S. Nakatsuji, Y. Maeno, and C. Pfleiderer

Phys. Rev. Lett. 86, 2661 – Published 19 March 2001

Abstract

We report the results of low temperature transport, specific heat, and magnetization measurements on high quality single crystals of the bilayer perovskite ${Sr}_{3} {Ru}_{2} O_{7}$ , which is a close relative of the unconventional superconductor ${Sr}_{2} {RuO}_{4}$ . Metamagnetism is observed, and transport and thermodynamic evidence for associated critical fluctuations is presented. These relatively unusual fluctuations might be pictured as variations in the Fermi surface topography itself.

Received 28 July 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.2661

Authors & Affiliations

R. S. Perry, L. M. Galvin, S. A. Grigera, L. Capogna, A. J. Schofield, and A. P. Mackenzie^*

School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom

M. Chiao and S. R. Julian

Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 OHE, United Kingdom

S. I. Ikeda^1,2, S. Nakatsuji², and Y. Maeno^2,3

¹Electrotechnical Laboratory, Tsukuba, Ibaraki 305-8568, Japan
²Department of Physics, Kyoto University, Kyoto 606-8502, Japan
³CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan

C. Pfleiderer