| cond-mat/0402016 (February 2004) | | High Resolution Study of Magnetic Ordering at Absolute Zero | | M. Lee, A. Husmann, T. F. Rosenbaum and G. Aeppli | James Franck Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637
London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
Toshiba Research Europe Ltd., 260 Cambridge Science Park, Cambridge, CB4 0WE, UK
| | Abstract. High fidelity pressure measurements in the zero temperature limit provide a unique opportunity to study the behavior of strongly interacting, itinerant electrons with coupled spin and charge degrees of freedom. Approaching the exactitude that has become the hallmark of experiments on classical critical phenomena, we characterize the quantum critical behavior of the model, elemental antiferromagnet chromium, lightly doped with vanadium. We resolve the sharp doubling of the Hall coefficient at the quantum critical point and trace the dominating effects of quantum fluctuations up to surprisingly high temperatures. | | Subject. Strongly Correlated Electrons | | Comment. 5 pages, 4 figures | | Journal-ref. Phys. Rev. Lett. 92, 187201 (2004) | | Article Options | | Full Text (PDF) Full Text (Postscript) Source Files (Gzip / Tar Gzip) Eprint Citation (BibTeX) |
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