Author:
Squillante Lucas,F. Mello Isys,O. Gomes Gabriel,Seridonio A. C.,Lagos-Monaco R. E.,Stanley H. Eugene,de Souza Mariano
Abstract
AbstractIn real paramagnets, there is always a subtle many-body contribution to the system’s energy, which can be regarded as a small effective local magnetic field (Bloc). Usually, it is neglected, since it is very small when compared with thermal fluctuations and/or external magnetic fields (B). Nevertheless, as both the temperature (T) → 0 K and B → 0 T, such many-body contributions become ubiquitous. Here, employing the magnetic Grüneisen parameter (Γmag) and entropy arguments, we report on the pivotal role played by the mutual interactions in the regime of ultra-low-T and vanishing B. Our key results are: i) absence of a genuine zero-field quantum phase transition due to the presence of Bloc; ii) connection between the canonical definition of temperature and Γmag; and iii) possibility of performing adiabatic magnetization by only manipulating the mutual interactions. Our findings unveil unprecedented aspects emerging from the mutual interactions.
Publisher
Springer Science and Business Media LLC
Reference64 articles.
1. Mathur, N. D. et al. Magnetically mediated superconductivity in heavy fermion compounds. Nature 394, 39–43 (1998).
2. Gegenwart, P. et al. Magnetic-Field Induced Quantum Critical Point in YbRh2Si2. Phys. Rev. Lett. 89, 056402 (2002).
3. Kittel, C. Introduction to Solid State Physics 8th ed. (John Wiley & Sons, Hoboken, 2005).
4. Ashcroft, N. W. & Mermim, N. D. Solid State Physics. (Saunders College Publishing, Orlando, 1976).
5. Weiss, P. L. ’hypothèse du champ moléculaire et la propriété ferromagnétique. J. Phys. Theor. Appl 6, 661–690 (1907).
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