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Current Trends in Science and Technology

an Open Access Publication ISSN: 0976-9730 | 0976-9498

Physics

Impact of NNN Coulomb interaction on the Properties of Mixed-valence Compounds

Piuli Mukherjee, N. K. Ghosh
Department of Physics, University of Kalyani, Kalyani-741235, West Bengal, India Email: piulim2008@gmail.com
Online First: March 28, 2018
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Abstract

The influence of Next Nearest Neighbour (NNN) Coulomb-interation on mixed-valence systems has been investigated. We have considered Falicov-Kimball model ex­tended by the NNN Coulomb interaction. Exact diagonal­ization technique has been used to study the zero and finite temperature properties of the mixed valence compounds. It has been revealed that NNN Coulomb interactions (i) relocates the f-level energy and effects the valence transition,(ii) escalates disorder in the system, (iii) both single peak and double peak structures become prominent in specific heat curves, (iv) raises the growth of antiferromagnetic correlations

Keyword : Mixed-valent systems; Falicov-Kimball model; NNN Coulomb interation.

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Mar 27, 2018
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Mar 28, 2018
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References

T. Kaneko, S. Ejima, H. Fehske and Y. Ohta, Phys. Rev. B 88, 035312,(2013). C. M. Varma, Rev. Mod. Phys. 48, 219, (1976). Yanase, and A. Hasegawa, Electron Correlation and Magnetism in narrow Band Systems. , edited by T. Moriya, Springer- Verlag, Berlin, 230,(1981). Menth, E. Buehler and T.H. Geball, Phys. Rev. Lett.22, 295,(1969). J. C. Nickerson, R. M. White, K. N. Lee, R. Bachmann, T. H. Geballe and G. W. Hull Jr., Phys. Rev. B3, 2030,(1971). M. Konczykowski, F. Lapierre, P. Haen, J. Morillo and J.P. Senateur, J. Magn. Matter. 47-48, 274, (1985). K. Iwasa, T. Kokuyama, M. Kohgi, N.K. Sato and N. Mori, Physica B 359, 148, (2005). Barla, J. P. Sanchez, Y. Haga, G. Lapertot, B.P. Doyle, O. Leupold, R. Rüffer, M. M. Abd- Elmeguid, R. Lengsdorf and J. Flouquet, Phys. Rev. Lett.92,066401,(2004). N. K. Ghosh and R. L. Sarkar, Phys. Stat. Sol.(b), 176, 395, (1993). H. Čenčariková, P. Farkašovský and M. Žonda, Int. J. Of Mod. Phys. B22, 2473, (2008). L. M. Falicov and J. C. Kimball, Phys. Rev. Lett. 22, 997, (1969). T. Portengen, T. Östreich and L.J. Sham, Phys. Rev. B 54, 17452; (1996). T. Kaneko, S. Ejima, H. Fehske and Y. Ohta, Phys. Rev. B 88, 035312,(2013). V. Apinyan, T.K. Kopec and J. Low Temp. Phys., 27, 176, (2014). J. Freericks, and V. Zlatic, Rev. Mod. Phys. 75, 1333, (2003). S. K. Bhowmick and N. K. Ghosh, Armenian J. Phys., 4, 30, (2011). N. K. Ghosh, S. K. Bhowmick and N. S. Mondal, Pramana J. Physics,76, 139, (2011). P. Mukherjee and N. K. Ghosh, Indian J Phys, 90(6), 673, (2016). P. Mukherjee, S. K. Bhowmick and N. K. Ghosh, Armenian J. Phys., 5, 75, (2012). P. Mukherjee and N. K. Ghosh, Bulletin of Pure and Applied Sciences. 36 D , 124 , (2017). P. Mukherjee and N. K. Ghosh, AIP Conference Proceedings, 1728, 020016, (2016). H. Watanabe, K. Seki and S. Yunoki, Phys. Rev. B91, 205135 (2016). S. Ejima, T. Kaneko, Y. Ohta and H. Fehske, Phys. Rev. Lett. 112, 026401,(2014). P. Farkašovský, EPL 110, 47007, (2015).Poteryaev, A. I. Lichtenstein and G. Kotliar, Phys. Rev. Lett. 93, 086401, (2004). H. C ̌enc ̌aikova ́, P. Farkas ̌ovsky ́ and M. Z ̌onda, Int. J. of Mod. Phys. B22, 2473, (2008). H. C ̌enc ̌aikova ́, P. Farkas ̌ovsky ́ and M. Z ̌onda, Acta Phys. Pol. A113, 287, (2008). S. K. Bhowmick and N. K. Ghosh, Pramana J. Phys. 78, 289, (2012).
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References

T. Kaneko, S. Ejima, H. Fehske and Y. Ohta, Phys. Rev. B 88, 035312,(2013).
C. M. Varma, Rev. Mod. Phys. 48, 219, (1976).
Yanase, and A. Hasegawa, Electron Correlation and Magnetism in narrow Band Systems. , edited by T. Moriya, Springer- Verlag, Berlin, 230,(1981).
Menth, E. Buehler and T.H. Geball, Phys. Rev. Lett.22, 295,(1969).
J. C. Nickerson, R. M. White, K. N. Lee, R. Bachmann, T. H. Geballe and G. W. Hull Jr., Phys. Rev. B3, 2030,(1971).
M. Konczykowski, F. Lapierre, P. Haen, J. Morillo and J.P. Senateur, J. Magn. Matter. 47-48, 274, (1985).
K. Iwasa, T. Kokuyama, M. Kohgi, N.K. Sato and N. Mori, Physica B 359, 148, (2005).
Barla, J. P. Sanchez, Y. Haga, G. Lapertot, B.P. Doyle, O. Leupold, R. Rüffer, M. M. Abd- Elmeguid, R. Lengsdorf and J. Flouquet, Phys. Rev. Lett.92,066401,(2004).
N. K. Ghosh and R. L. Sarkar, Phys. Stat. Sol.(b), 176, 395, (1993).
H. Čenčariková, P. Farkašovský and M. Žonda, Int. J. Of Mod. Phys. B22, 2473, (2008).
L. M. Falicov and J. C. Kimball, Phys. Rev. Lett. 22, 997, (1969).
T. Portengen, T. Östreich and L.J. Sham, Phys. Rev. B 54, 17452; (1996).
T. Kaneko, S. Ejima, H. Fehske and Y. Ohta, Phys. Rev. B 88, 035312,(2013).
V. Apinyan, T.K. Kopec and J. Low Temp. Phys., 27, 176, (2014).
J. Freericks, and V. Zlatic, Rev. Mod. Phys. 75, 1333, (2003).
S. K. Bhowmick and N. K. Ghosh, Armenian J. Phys., 4, 30, (2011).
N. K. Ghosh, S. K. Bhowmick and N. S. Mondal, Pramana J. Physics,76, 139, (2011).
P. Mukherjee and N. K. Ghosh, Indian J Phys, 90(6), 673, (2016).
P. Mukherjee, S. K. Bhowmick and N. K. Ghosh, Armenian J. Phys., 5, 75, (2012).
P. Mukherjee and N. K. Ghosh, Bulletin of Pure and Applied Sciences. 36 D , 124 , (2017).
P. Mukherjee and N. K. Ghosh, AIP Conference Proceedings, 1728, 020016, (2016).
H. Watanabe, K. Seki and S. Yunoki, Phys. Rev. B91, 205135 (2016).
S. Ejima, T. Kaneko, Y. Ohta and H. Fehske, Phys. Rev. Lett. 112, 026401,(2014).
P. Farkašovský, EPL 110, 47007, (2015).Poteryaev, A. I. Lichtenstein and G. Kotliar, Phys. Rev. Lett. 93, 086401, (2004).
H. C ̌enc ̌aikova ́, P. Farkas ̌ovsky ́ and M. Z ̌onda, Int. J. of Mod. Phys. B22, 2473, (2008).
H. C ̌enc ̌aikova ́, P. Farkas ̌ovsky ́ and M. Z ̌onda, Acta Phys. Pol. A113, 287, (2008).
S. K. Bhowmick and N. K. Ghosh, Pramana J. Phys. 78, 289, (2012).
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