Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 12 October 2001:
Vol. 294. no. 5541, pp. 329 - 332
DOI: 10.1126/science.1063539
Prev | Table of Contents | Next

Research Articles

Magnetic Field-Tuned Quantum Criticality in the Metallic Ruthenate Sr3Ru2O7

S. A. Grigera,12* R. S. Perry,2 A. J. Schofield,2 M. Chiao,3 S. R. Julian,3 G. G. Lonzarich,3 S. I. Ikeda,45 Y. Maeno,5 A. J. Millis,6 A. P. Mackenzie12*

The concept of quantum criticality is proving to be central to attempts to understand the physics of strongly correlated electrons. Here, we argue that observations on the itinerant metamagnet Sr3Ru2O7 represent good evidence for a new class of quantum critical point, arising when the critical end point terminating a line of first-order transitions is depressed toward zero temperature. This is of interest both in its own right and because of the convenience of having a quantum critical point for which the tuning parameter is the magnetic field. The relationship between the resultant critical fluctuations and novel behavior very near the critical field is discussed.

1 School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9SS, UK.
2 School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
3 Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, UK.
4 Nanoelectronics Research Institute, AIST, Tsukuba Central 2, Tsukuba, 305-8568, Japan.
5 Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
6 Center for Materials Theory, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA.
*   To whom correspondence should be addressed. E-mail: s.grigera{at}bham.ac.uk (S.A.G.); apm9{at}st-and.ac.uk (A.P.M.)

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Observation of a multiferroic critical end point.
J. W. Kim, S. Y. Haam, Y. S. Oh, S. Park, S.-W. Cheong, P. A. Sharma, M. Jaime, N. Harrison, J. H. Han, G.-S. Jeon, et al. (2009)
PNAS 106, 15573-15576
   Abstract »    Full Text »    PDF »
Entropy Landscape of Phase Formation Associated with Quantum Criticality in Sr3Ru2O7.
A. W. Rost, R. S. Perry, J.-F. Mercure, A. P. Mackenzie, and S. A. Grigera (2009)
Science 325, 1360-1363
   Abstract »    Full Text »    PDF »
Anomalous Criticality in the Electrical Resistivity of La2-xSrxCuO4.
R. A. Cooper, Y. Wang, B. Vignolle, O. J. Lipscombe, S. M. Hayden, Y. Tanabe, T. Adachi, Y. Koike, M. Nohara, H. Takagi, et al. (2009)
Science 323, 603-607
   Abstract »    Full Text »    PDF »
Formation of a Nematic Fluid at High Fields in Sr3Ru2O7.
R. A. Borzi, S. A. Grigera, J. Farrell, R. S. Perry, S. J. S. Lister, S. L. Lee, D. A. Tennant, Y. Maeno, and A. P. Mackenzie (2007)
Science 315, 214-217
   Abstract »    Full Text »    PDF »
Disorder-Sensitive Phase Formation Linked to Metamagnetic Quantum Criticality.
S. A. Grigera, P. Gegenwart, R. A. Borzi, F. Weickert, A. J. Schofield, R. S. Perry, T. Tayama, T. Sakakibara, Y. Maeno, A. G. Green, et al. (2004)
Science 306, 1154-1157
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)