Dipolar ordering of molecular magnets

Physical Review B - Condensed Matter and Materials Physics

Volumn 66, Issue 6, 2002, Pages 644231-644237

  Fernández, Julio F ^a  

^a CSIC   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; ARTICLE; DIPOLE; ENERGY; HEAT; LOW TEMPERATURE PROCEDURES; MAGNET; MAGNETISM; MATHEMATICAL ANALYSIS; MODEL; MONTE CARLO METHOD; TIME;

EID: 0036696134     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.66.064423     Document Type: Article

References (53)

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34. How various spin crystalline systems with purely dipolar interactions order at low temperature is a subject of current interest; see, for instance, J.F. Fernández and J.J. Alonso, Phys. Rev. B 62, 53 (2000); 65, 189901(E) (2002).
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41. For specific-heat experiments in Mn6 in which the role played by collective behavior is tested, see A. Morello, F.L. Mettes, F. Luis, J.F. Fernandez, J. Krzystek, G. Aromi, G. Christou, and L.J. de Jongh (unpublished).
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48. c and q depend somewhat on temperature. For more details about their behavior, see Sec. IV.
49. 6 (Ref. 23).
50. A distribution of tunneling energy windows is not considered here. Such distributions occur in some alternative theories of magnetic tunneling at very low temperature, such as in E.M. Chudnovsky and D.A. Garanin, Phys. Rev. Lett. 87, 187203 (2001); D.A. Garanin and E.M. Chudnovsky, Phys. Rev. B 65, 094423 (2002).
51. A distribution of tunneling energy windows is not considered here. Such distributions occur in some alternative theories of magnetic tunneling at very low temperature, such as in E.M. Chudnovsky and D.A. Garanin, Phys. Rev. Lett. 87, 187203 (2001); D.A. Garanin and E.M. Chudnovsky, Phys. Rev. B 65, 094423 (2002).
52. For the effect local magnetic field variations that take place while tunneling occurs have on Landau-Zener-type experiments, see, J. Liu, B. Wu, L.B. Fu, R.B. Diener, and Qian Niu, Phys. Rev. B 65, 224401 (2002).
53. -3 = ζ(3)-1, where ζ is Riemann's zeta function, M. Abramovitz and I. Stegun, Handbook of Mathematical Functions (National Bureau of Standards Applied Mathematics Series, Washington, D. C., 1964), p. 807.