, Volume 64, Issue 1, pp 119–128 | Cite as

Electronic and vibrational Raman spectroscopy of Nd0.5Sr0.5MnO3 through the phase transitions

  • Md Motin Seikh
  • A. K. Sood
  • Chandrabhas Narayana


Raman scattering experiments have been carried out on single crystals of Nd0.5Sr0.5MnO3 as a function of temperature in the range of 320–50 K, covering the paramagnetic insulator-ferromagnetic metal transition at 250 K and the charge-ordering antiferromagnetic transition at 150 K. The diffusive electronic Raman scattering response is seen in the paramagnetic phase which continue to exist even in the ferromagnetic phase, eventually disappearing below 150 K. We understand the existence of diffusive response in the ferromagnetic phase to the coexistence of the different electronic phases. The frequency and linewidth of the phonons across the transitions show significant changes, which cannot be accounted for only by anharmonic interactions.


Manganites Jahn-Teller distortion Raman scattering phonon spin excitation spin-phonon coupling electronic Raman scattering 


78.30.-j 75.30.Vn 71.70.Ej 


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  1. [1]
    C N R Rao and B Raveau (Ed.),Colossal magnetoresistance, charge ordering and related properties of manganese oxides (World Scientific, Singapore, 1998)Google Scholar
  2. [2]
    C Zener,Phys. Rev. 82, 403 (1951)CrossRefADSGoogle Scholar
  3. [3]
    A A J B Elemans, K R Van Laar, K R Van der Been and B O Loopstra,J. Solid State Chem. 3, 238 (1971)CrossRefADSGoogle Scholar
  4. [4]
    A J Millis, P B Littlewood and B I Shraiman,Phys. Rev. Lett. 74, 5144 (1995)CrossRefADSGoogle Scholar
  5. [5]
    A J Millis, B I Shraiman and R Mueller,Phys. Rev. Lett. 77, 175 (1996)CrossRefADSGoogle Scholar
  6. [6]
    J B Goodenough and J S Zhou,Nature (London) 386, 229 (1997)CrossRefADSGoogle Scholar
  7. [7]
    S J L Billinge, R G DiFrancesco, G H Kwei, J J Neumeier and J D Thompson,Phys. Rev. Lett. 77, 715 (1996)CrossRefADSGoogle Scholar
  8. [8]
    G Zhao, K Conder, H Keller and K A Muller,Nature (London) 381, 676 (1996)CrossRefADSGoogle Scholar
  9. [9]
    C H Booth, F Bridges, G H Kwei, J M Lawrence, A L Cornelius and J J Neumeier,Phys. Rev. Lett. 80, 853 (1998)CrossRefADSGoogle Scholar
  10. [10]
    M N Iliev, M V Abrashev, H-G Lee, V N Popov, Y Y Sun, C Thomsen, R L Meng and C W Chu,Phys. Rev. B57, 2872 (1998)ADSGoogle Scholar
  11. [11]
    C N R Rao and P V Vanitha,Curr. Opin. Solid State Mater. Sci. 6, 97 (2002)CrossRefGoogle Scholar
  12. [12]
    P M Woodward, D E Cox, T Vogt, C N R Rao and A K Cheetham,Chem. Mater. 11, 3528 (1999)CrossRefGoogle Scholar
  13. [13]
    M Mayr, A Moreo, J A Vergés, J Arispe, A Feiguin and E Dagotto,Phys. Rev. Lett. 86, 135 (2001)CrossRefADSGoogle Scholar
  14. [14]
    S Yoon, H L Liu, G Schollerer, S L Cooper, P D Han, D A Payne, S-W Cheong and Z Fisk,Phys. Rev. B58, 2795 (1998)ADSGoogle Scholar
  15. [15]
    H L Liu, S Yoon, S L Cooper, S-W Cheong, P D Han and D A Payne,Phys. Rev. B58, R10115 (1998)ADSGoogle Scholar
  16. [16]
    V Dediu, C Ferdeghini, F C Matacotta, P Nozar and G Ruani,Phys. Rev. Lett. 84, 4489 (2000)CrossRefADSGoogle Scholar
  17. [17]
    R Gupta, A K Sood, R Mahesh and C N R Rao,Phys. Rev. B54, 14899 (1996)ADSGoogle Scholar
  18. [18]
    E Liarokapis, Th Leventouri, D Lampakis, D Palles, J J Neumeier and D H Goodwin,Phys. Rev. B60, 12758 (1999)ADSGoogle Scholar
  19. [19]
    R Gupta, G V Pai, A K Sood, T V Ramakrishnan and C N R Rao,Euro. Phys. Lett. 58, 778 (2002)CrossRefADSGoogle Scholar
  20. [20]
    E Granado, J A Sanjurjo, C Rettori, J J Neumeier and S B Oseroff,Phys. Rev. B62, 11304 (2000)ADSGoogle Scholar
  21. [21]
    M V Abrashev, A P Litvinchuk, M N Iliev, R L Meng, V N Popov, V G Ivanov, R A Chakalov and C Thomsen,Phys. Rev. B59, 4146 (1999)ADSGoogle Scholar
  22. [22]
    H Kuwahara, Y Tomioka, A Asamitsu, Y Moritomo and Y Tokura,Science 270, 961 (1995)CrossRefADSGoogle Scholar
  23. [23]
    H Kuwahara, Y Moritomo, A Asamitsu, M Kasai, R Kumai and Y Tokura,Science 272, 80 (1996)CrossRefADSGoogle Scholar
  24. [24]
    C Ritter, R Mahendiran, M R Ibarra, L Morellon, A Maignan, B Raveau and C N R Rao,Phys. Rev. B61, 9229 (2000)ADSGoogle Scholar
  25. [25]
    Md M Seikh, N Chandrabhas, S Parashar and A K Sood,Solid State Commun. 127, 209 (2003)CrossRefADSGoogle Scholar
  26. [26]
    G Kavitha, SRC Vivek, A Govindaraj and N Chandrabhas,Proc. Indian Acad. Sci. (Chem. Sci.) 115, 689 (2003)CrossRefGoogle Scholar
  27. [27]
    A Zawadowski and M Cardona,Phys. Rev. B42, 10732 (1990)ADSGoogle Scholar
  28. [28]
    K-Y Choi, P Lemmens, G Guntherodt, M Pattabiraman, G Rangarajan, V P Gnezdilov, G Balakrishnan, D McK Paul and M R Lees,J. Phys.: Condens. Matter 15, 3333 (2003)CrossRefADSGoogle Scholar
  29. [29]
    L Martin Carrón, A de Andrés, M J Martínez-Lope, M T Casais and J A Alonso,Phys. Rev. B66, 174303 (2002)ADSGoogle Scholar

Copyright information

© Indian Academy of Sciences 2005

Authors and Affiliations

  • Md Motin Seikh
    • 1
    • 2
  • A. K. Sood
    • 1
    • 3
  • Chandrabhas Narayana
    • 1
  1. 1.Chemistry and Physics of Materials UnitJawaharlal Nehru Centre for Advanced Scientific ResearchBangaloreIndia
  2. 2.Solid State and Structural Chemistry UnitIndian Institute of ScienceBangaloreIndia
  3. 3.Department of PhysicsIndian Institute of ScienceBangaloreIndia

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