Ground-State Phase Diagram of a Model FCC Magnet with Modified RKKY Interaction

• Authors: K. Szałowski , T. Balcerzak
• Languages of publication: EN

Abstracts

EN

The ground-state phase diagram is studied for a diluted model magnet with FCC structure and modified Ruderman-Kittel-Kasuya-Yosida interaction. The modification consists in taking into account the exponential damping for the long-range interaction as well as the nearest-neighbors antiferromagnetic superexchange couplings. The existence of paramagnetic, ordered ferromagnetic and three distinct antiferromagnetic phases is shown. The stability areas of the phases upon the free-carriers concentration are investigated.

Keywords

EN

75.50.Pp; 75.10.-b; 75.30.Hx; 75.30.Kz

Discipline

• 75.10.-b: General theory and models of magnetic ordering(see also 05.50.+q Lattice theory and statistics)
• 75.30.Hx: Magnetic impurity interactions
• 75.50.Pp: Magnetic semiconductors
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 421-424

Dates

published

2008-01

received

2007-07-09

Contributors

author

K. Szałowski

• Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland

author

T. Balcerzak

• Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland

References

• 1. T. Dietl, A. Haury, Y. Merle d'Aubigné, Phys. Rev. B 55, R3347 (1997)
• 2. D.J. Priour, Jr., S. Das Sarma, Phys. Rev. Lett. 97, 127201 (2006)
• 3. O.M. Fedorych, Z. Wilamowski, M. Potemski, M. Byszewski, J. Sadowski, Semicond. Sci. Technol. 19, S492 (2004)
• 4. T. Balcerzak, J.W. Tucker, A. Bobák, M. Jaščur, Czech J. Phys. 54, D643 (2004)
• 5. D.C. Mattis, The Theory of Magnetism I, Springer-Verlag, Berlin 1981
• 6. A.H. Morrish, The Physical Principles of Magnetism, Wiley, New York 1965

Identifiers

DOI

10.12693/APhysPolA.113.421