de Haas van Alphen Effect in ZrZn2 under Pressure: Crossover between Two Magnetic States
Abstract
We report measurements of the de Haas van Alphen effect in ZrZn2 under hydrostatic pressures up to 21kbar where the Curie temperature vanishes. The exchange splitting of a Fermi surface changes in behavior with increasing magnetic field, which is qualitatively consistent with the behavior of the high-field magnetization, suggesting the existence of a crossover between two distinct magnetic states. These and previously unexplained findings may be understood in terms of a p-T-B phase diagram qualitatively similar to that of the ferromagnetic superconductor UGe2.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 2004
- DOI:
- 10.1103/PhysRevLett.92.197002
- Bibcode:
- 2004PhRvL..92s7002K
- Keywords:
-
- 74.70.Ad;
- 71.18.+y;
- 75.30.Kz;
- Metals;
- alloys and binary compounds;
- Fermi surface: calculations and measurements;
- effective mass g factor;
- Magnetic phase boundaries