PUBLICATIONS LIST  of  Shikha Varma

  

1. Size Dependant Electronic Structure from InP Nanodots,  D. Paramanik, S. R. Sahoo,

      Subrata Majumder and Shikha Varma, Vacuum 84 (2010) 602. 

 

2.  Formation of self organised Ta nano-structures by Ar+ ion sputtering of Ta foil:

       XPS and AFM study, V.R.R. Medicherla, S. Majumder, D. Paramanik and Shikha Varma,

       The Journal of Electron Spectroscopy and Related Phenomena  (2010) in press.

 

3. Evolution of surface morphology of NiO thin films under swift heavy ion irradiation,

      P. Mallick, Chandana Rath, S. Majumdar, R. Biswal, D. C. Agarwal, Shikha Varma,

      D.K. Avasthi, P.V. Satyam and N. C. Mishra, Appl. Surf. Sci, 256 (2009) 521.

 

4. Surface roughness and power spectral density study of SHI irradiated ultra-thin gold

      films, P. Dash, P. Mallick, H. Rath, A. Tripathi, Jai Prakash, D.K. Avasthi,

       S. Majumder, S.Varma, P.V. Satyam and N.C.Mishra, Appl. Surf. Sci., 256 (2009) 558.

 

5. Observation of semiconductor-magnetic behavior in undoped ZnO nanocrystal at Room

      Temperature, S. Majumder, D. Paramanik, A. Gupta, Shikha Varma,

       Appl. Surf. Sci. 256 (2009) 513.

6. Nano Pattern Formation and Surface Modifications by Ion  Irradiation, Dipak Paramanik,

       Subrata Majumder, S. R. Sahoo, Shikha Varma, Defence Science Journal : Ion Beam

        Technology 59, (2009) 413.

  

7. X-Ray Photoelectron Spectroscopic Investigations of Modifications in Plasmid

      DNA after Interaction with Hg-Nanoparticles, S. Majumder, M. Priyadarshini,

      U. Subudhi, G.B.N. Chainy and Shikha Varma, Appl. Surf. Sci, 256 (2009) 438.

  

 8. Fabrication, photoemission Studies and sensor of Hg nanoparticles templated on

     Plasmid DNA, Subrata Majumder, M. Priyadarshini, U. Subudhi, M. Umananda,

   G.B.N. Chini, P.V. Stayam,  Shikha Varma, Appl. Phys. Lett., 94 (2009)  073110.

 

   Also appeared  in Nature India http://www.nature.com/nindia/2009/090227/full/nindia.2009.68.html

 

    Also appeared in  Virtual Journal of Biological Physics  (Intermolecular Interactions)

 

9. Charge Trapping and Reliability Characteristics of Sputtered Y2O3 high- k

      dielectrics on N- and S- passivated germanium, C. Mahata, M.K. Bera,

       T.Das, S. Mallik, M.K. Hota, B. Majhi, Shikha Varma, P.K. Bose, C.K. Maiti,

       Semicond. Sci. Technol., 24 (2009) 085006.

 

10. Synthesis of Controlled Diluted Magnetic Semiconductor by Ni Implantation in ZnO

       Crystal, D. K. Mishra, P. Kumar, Sandeep Kumar, S. Mohapatra, Indra Sulania,

       A. Tripathi, S. Varma, Manoj Kumar Sharma, Ratnamala Chatterjee, and D. Kanjilal,

        Advanced Science Letters 2,  (2009) 324.

 

11. High Performance TaYOx-based MIM Capacitors, C. Mahata, M.K. Bera,

       M.K. Hota, T.Das, S. Mallik, B. Majhi, Shikha Varma, P.K. Bose, C.K. Maiti,

       Microelectrnic Engineering, 86 (2009) 2180.

 

12. keV ion-induced Effective surface modifications, I Sulania, A. Tripahti, D. Kabiraj,
    Shikha Varma, D.K. Avasthi, J. NanoSci. and Nanotech., 8 (2008) 4163.

13. Scaling Studies of Nano-dots on InP(111) Surfaces after MeV Implantation, D.Paramanik,
    S.R. Sahoo, S. Majumder and Shikha Varma, J. NanoSci. and Nanotech. 8 (2008) 4207.

14. Studies of self-organized Nanostructures on InP(111) surfaces after low energy Ar+ ion
     irradiation, D. Paramanik, S. Majumdar, S.R. Sahoo and Shikha Varma, J. Nanosci. and
      Nanotech. 8 (2008) 4227.

15. Morphological Evolution of InP Nano-Dots and Surface Modifications after keV 
     Irradiation, D. Paramanik, S.N. Sahu, Shikha Varma, J. Phys. D-Appl. Phys.,41 (2008)  125308.

16. Synthesis of Gold Silicon Core shell Nanoparticles with tunable localized Surface
     Plasmon Resonance., S. Mohapatra, Y.K. Mishra, D.K. Avasthi, D. Kabiraj, 
     J. Ghatak, Shikha Varma, Appl. Phys. Lett, 92 (2008) 103105.

17. Thermal Plasma sintered Ti doped Al-Zr oxide composites: X-ray Photoelectron
     spectroscopy study, M. Ray, D.K. Mishra, Shikha Varma, B.K. Roul, J. Materials:
     Design and Applications, 222 (2008) 103.

18. SIMS study of effect of Cr adhesion layer on the thermal stability of silver
     selenide thin films on Si, B.C. Mohanty, A.K. Tyagi, A.K. Balamurugan,
     Shikha Varma, S. Kasiviswanathan, Nucl. Instru. Meth B 266, (2008), 1480.

19. Nonlinear Optical Response of chloroaluminiumphthalocyanine encapsulated silica
     core-shell  K. Sathiyamoorthy, C. Vijayan, Shikha Varma, Langmuir 24 (2008) 7485.

20. Studies of InP Nano dots formation after keV Ar+ irradiation, D. Paramanik and
     Shikha Varma, Nucl. Inst. and Meth.B 266, (2008), 1257.

21. Boron phosphide films prepared by co-evaporation technique: synthesis and characterization,
    S. Dalui, S. Hussain,  Shikha Varma , D. Paramanik and A. K. Pal, Thin Solid Films,               
     516, (2008) 4958.

22. Synthesis of Au nanoparticles in partially oxidized Si matrix by atom beam sputtering
       S. Mohapatra, Y K Mishra, D K Avasthi, D Kabiraj, J Ghatak and Shikha Varma
       J. Phys. D: Appl. Phys.40 ( 2007) 7063

23.  Raman Scattering Characterization and Elcetron Phonon Coupling Strength For MeV
      Implanted InP(111), D. Paramanik, Shikha Varma, J. App. Phys., 101 (2007) 023528.

24.  Raman Scattering Studies of InP Nanostructures created by MeV Sb Implantation,
     D. Paramanik, Shikha Varma,  J. Nanosci. and Nanotech., 07 (2007) 2197.

25. BSb films: Synthesis and Characterization, A.K. Pal, S. Dalui, S. N. Das, S. Hussain,
     D. Paramanik, Shikha Varma, J. Crys. Growth. 305 (2007) 149.

26. Formation of gold nanoparticles in ploymethylemethacrylate by UV irradiation, Mazid
      Kazemian Abyaneh, D. Paramanik, Shikha Varma, S.W. Gosavi, and S.K. Kulkarni.
       J. Phys.D:  Appl Phys. 40 (2007) 3771.

27.  Nanoscale defect formation on InP(111) Surfaces after MeV Sb Implantation, D. Paramanik,
     Asima Pradhan, Shikha Varma, Jour. App. Phys., 99 (2006) 014304-014310.

28.  Formation and Shape Transition of Nanostructures on Si(100) surfaces after MeV Sb
     implantation, Soma Dey, Dipak Paramanik, V. Ganesan, Shikha Varma, Appl. Surf. Sci.,

     253 (2006) 1116-1121.
     
29. Surface Roughening and Radial Separation Distribution Studies on InP(111) Surfaces after
    MeV Sb Implantation, D. Paramanik, Shikha Varma, Nucl. Instru. Meth. B,244 (2006) 81-85.

30. Pattern Formation on  InP(111) Surfaces after MeV Implantation, D. Paramanik,
    Shikha Varma, Nucl. Instru. Meth. B, 244 (2006) 69-73.

31.  Leakage current characteristics and energy band diagram of Al/ZrO2/Si0.3Ge 0.7 hetero
       -MIS structures, S Chakraborty, M K Bera, G K Dalapati, D Paramanik, Shikha Varma, P K
       Bose, S Bhattacharya and C K Maiti, Semiconductor Science & Technology., 21(2006) 467.

  
32. High Frequency Characterization and Continuum Modeling of Ultrathin high-k (ZrO2) gate
     dielectrics on strained-Si, M.K.Bera, S. Chakraborty, S. Saha, D. Paramanik, Shikha Varma,
     S. Bhattacharya and C.K. Maiti. Thin Solid Films 504 (2006) 183.

33. Shape Transition of Nanostructures created on Si(100) surfaces after MeV Implantation,
     D. Pramanik, S.Dey, V. Ganesan, Shikha Varma, Nucl. Instr. Meth. B 244 (2006) 74-77.
  
34. Adsorption and Hetrogeneous reduction of arsenic at the phyllosilicate-water interface, L. Charlet,
    S. Chakraborty, Shikha Varma, C. Tournassat, M. Wolthers, D. Chatterjee, and G. Roman Ross,
    In Advances in Arsenic Research: Integration of Experimental and Observational Studies and
    Implications for Mitigation (Eds. P. A. O'Day, D. Vlassopoulos, X. Ming, L. G. Benning), ACS
    Symposium Series Special Issue on As Geochemistry, 915 (2005) pp 41-59.

35.  Surface Characterization and Electronic Structure of HgTe Nanocrystalline Thin Films, S. Rath,
    D. Paramanik, S.N. Sarangi, Shikha Varma, S.N. Sahu, Phys. Rev. B.  72 (2005) 205410.

36. CVD Growth and Characterization of 3C-SiC thin films, A  Gupta, D.Paramanik, Shikha Varma, and
   C. Jacobs, Bull. Mat. Res. 27 (2004) 445.

37. Electrical Properties of high permittivity ZrO2 gate dielectrics on strained-Si, C.K. Maiti, G.K. Dalapati,
     S. Chatterjee,  S.K. Samata, S. Patil,  S. Varma, Solid State Electronics,  48 (2004) 2235.

38. Scanning Probe Microscopes, Shikha Varma, Physics Education, Spl. Edition on Microscopy,
    20 (2004) 51.

39.   Composition and Optical  Chracteristics of Electrochemically Synthesized GaAs nanocrystals
      J. Nayak, Shikha Varma, D. Paramanik and S.N. Sahu, Intl. Jour.of Nanoscience, 3 (2004) 281.

40.  Electrical Properties of and Conduction Mechanism in Ultrathin ZrO2 Films on Si1-yCy Heterolayers,;
      G.K. Dalapati, S.K. Samata, S. Chatterjee,  P.K. Bose, S. Varma,  Shivaprasad Patil and C.K. Maiti,
      Jap. Jour. of Appl. Phys., 43 (2004) 3498.

41.  Damage and substitution anomalies for MeV Sb implantation in Si(100) after  high energy irradiation
      Soma Dey, Shikha Varma, Nucl. Instr. and Meth. in Phys. Res. B ,  212C (2003) 146.

42.  Substitution and diffusion behaviour of MeV implanted Sb in Si (100) after carbon-irradiation
       Soma Dey, Shikha Varma, Nucl. Instr. and Meth. in Phys. Res. B ,  212C (2003) 228.

43.  Surface Modifications in Silicon(100) due to Antimony Implantation, Shikha Varma, Soma Dey, 
       V. Ganesan,  Physics at Surfaces and Interfaces, Published by World Scientific, Singapore (2003) 171.

44. Resonance scattering and RBS from non-stoichiometric oxides, U. De, K.C. Varma, A. Sarkar, 
        Soma Dey,  Shikha Varma, Nucl. Instr. and Meth. in Phys. Res. B , 212C (2003) 505.

45. Electrical Properties of Ultrathin TiO2 Films on Si1-yCy Heterolayers,; G.K. Dalapati,
    S. Chatterjee, S.K. Samata, S.K. Nandi, P.K. Bose, S. Varma, Shivaprasad Patil and C.K. Maiti,
    Solid State Electronics,  47 (2003) 1793-1798.

46.  Electrical Properties of Ta2O5 Films Deposited on ZnO; S. K. Nandi, S. Chatterjee,
      S. K. Samanta, G. K. Dalapati, P. K. Bose, Shikha Varma, Shivprasad Patil, and
      C. K. Maiti, Bull. Mat. Sci.,  26 (2003) 365.

47.  Anomalous Behaviour of Sb Implanted Si after mega-electron-volt carbon irradiation; Soma Dey,
       Shikha Varma, Journal of Applied Physics, 90 (2001) 2618.

48. Damage studies of MeV Sb Implanted Si(100) by channeling and Raman Spectroscopy; Soma Dey,
      A. Pradhan, Shikha Varma, Jour. of Vacuum Sci and Tech. B 18 (2000) 2457-2462.

49.  Raman Scattering Characterization of Si(100) implanted with Mega electron Volt Sb;  Soma Dey,
      C. Roy, A. Pradhan, Shikha Varma, Jour. Appl. Phys.  87 ,3 ,(2000) 1110-1117.

50.  Raman Spectroscopy Study of Nanostructures of Si in Sb implanted Si(100); Soma Dey, C. Roy,
      A. Pradhan, ShikhaVarma, Physics of Semiconductor Devices, eds. V. Kumar and S.K.  Agarwal
       (Allied Publishers, New Delhi, 1999) 1049.

51. Sb implantation in Si(100) : Channeling and damage studies; Soma Dey, G. Kuri, B.Rout, Shikha Varma,
       Solid State Phys. (University Press Hyderabad, India) 42 (1999) 268.

52. Probing  Gauge String Formation in a  Superconducting Phase Transition; S. Rudaz,
       A.M. Srivastava, Shikha Varma, Int. J. Mod. Phys. A14 (1999) 1591.

53.  Range Profiles and Lattice location of MeV implant of Sb in Si(100); Soma Dey, G. Kuri, B. Rout,
        Shikha Varma,  Nucl. Instr. and Meth. 142 (1998) 35-42.

54.  Characterization of MeV implant of Antimony in Si(100); Soma Dey, G. Kuri, B. Rout, Shikha Varma,
      Solid State Phys. (India) 40C (1997) 395.

55.    InP Islands on InGaP/GaAs(001): Island Separation Distributions; ShikhaVarma, C.M. Reaves,
       V.B. Hill, S.P. DenBaars and W.H. Weinberg, Surface Science 393(1997) 24.

56.  MOCVD Growth of InP on InGaP/GaAs(001): An AFM Study; Shikha Varma, C.M. Reaves,
       V.B. Hill, W.H. Weinberg, and S.P. DenBaars, in Thin Film Characterization and Application,
       edited by Sa. K. Narayandass and D. Mangalaraj, Allied Publishers, (1996) page 252.

57.   RBS Technique as Applicable to Thin Films; Shikha Varma,
        Thin Film Characterization and Application, in edited by Sa. K. Narayandass and D. Mangalaraj,
        Allied Publishers, (1996) page 74.

58.  Scanning Tunneling Microscopy Study of InAs epitaxy on GaAs(001); Shikha Varma, V.B. Hill,
       A. Lorke, P.M. Petroff, and W.H. Weinberg,  Ind. Jour. Phys. 70A (1996) 659.

59. Effects of Strain on Island Scaling by Monte Carlo Simulations; B.Z. Nosho, V.B. Hill, Shikha Varma,
      and W.H. Weinberg, Surface Science 364 (1996) 164.

60. Characterization of InP islands on InGaP/GaAs(001): Effect of Deposition Temperature; V.B. Hill,
      C.M. Reaves, Shikha Varma, S.P. DenBaars,and W.H. Weinberg, Surface Science 341 (1995) 29.

61. Island Scaling in Strained Heteroepitaxy: InAs/GaAs(001); V.B. Hill,  Shikha Varma, Axel Lorke,
      B.Z. Nosho, P.M. Petroff, and W.H. Weinberg, Phys. Rev. Lett., 74 (1995) 3209.

62. Nanoscale Characterization of InP Islands on InGaP(001); V.B. Hill, C.M. Reaves,  Shikha Varma,
      S.P. DenBaars, and W.H. Weinberg, in: Microphysics of surfaces: Nanoscale processing, Vol. 5 (1995),
      Technical Digest Series (Optical Society of America, Washington, DC, 1995) 36-38.

63.  Characterization of MOCVD -grown InP on InGaP/GaAs(001); C.M. Reaves, V.B. Hill,
        Shikha  Varma, W.H. Weinberg, and S.P. DenBaars, Surface Science 326 (1995) 209.

64.  Formation of Coherently Strained Self Assembled InP -quantum Islands on InGaP/GaAs(001);
       S.P. DenBaars, C.M. Reaves, V.B. Hill, Shikha Varma, W.H. Weinberg, and P.M. Petroff,
       J. of Crystal Growth 145 (1994) 721.

65.  Initial Stages of InAs epitaxy on vicinal GaAs(001) -2x4; V.B. Hill, Axel Lorke, Shikha Varma,
       P.M. Petroff, K. Pond, and W.H. Weinberg, Phys. Rev. B50 (1994) 8479.  

66.   The Study of MgO(001) surfaces by Photoelectron Diffraction; Shikha Varma, X. Chen, J. Zhang,
         Ivan Davoli, D.K. Saldin, and B.P. Tonner, Surface Science 314 (1994) 145.

67.  Epitaxy of fcc and bcc Co, Ni, and Cu studied by X-ray Photoelectron Diffraction;
       J. Zhang, Z. -L Han, Shikha Varma, and B.P. Tonner, Surface Science 298 (1993) 351.

68.  Detailed XPS Valence Band and Core Level Studies of Select Metals Oxidations; Terry Barr, M.P.Yin,
        Shikha Varma, J. Vac Sci. Tech. A10 (1992), 2383.

69.   Surface Studies of Al2O3 and the Growth of Thin Films of Cu on Al2O3; Shikha Varma, G. S.Chottiner,
        Mehran Arbab, J. Vac Sci. Tech. A10 (1992), 2857.

70.   Synchrotron Radiation Induced Chemical Vapor Deposition of Thin Films from Metal Hexacarbonyls;
        Derrick Mancini, Shikha Varma, John K. Simons, Richard Rosenberg, P. A. Dowben,
         J. Vac. Sci.Tech., B8 (1990) 1804.

71.   The Effect of Lateral interaction on the Thermal Desorption of N2 from Ni(100); Shikha Varma,
        P. A. Dowben, J. Vac. Sci. Tech., A8 (1990) 2605.

72.   The Deposition of Molybdenum from Mo(CO)6; Shikha Varma, Yoon Gi Kim, Zoran Psenicnik,
         P. A. Dowben,  Robert R. Birge, Protective Coatings: Processing and Characterization. Proceedings
         of 1989 TMS, The Minerals,  Metals and Materials Society; edited by R.M. Yazici, p.101.

73.   The Effect of Crystallography on  the 5d Branching Ratio, Shikha Varma, Y. J. Kime, D. LaGraffe,
         P. A. Dowben, M. Onellion and J. L. Erskine, J. Chem. Phys. 93 (1990) 2819-2826.

74.   Surface Lattice Strain and the Electronic Structure of Thin Mercury Overlayers; Shikha Varma,Y.J. Kime,
        P.A. Dowben, and M. Onellion, Proc. Mat.  Res. Soc. Symp. Proc. 143, Synchrotron Radiation in Materials
        Research, R.  Clarke, J. Gland, and J.H. Weaver (1989) 85-90.

75.   The Influence of  Crystallographic Order Upon the Electronic Structure of Thin Mercury Overlayers;
        P. A. Dowben, M. Onellion, Shikha Varma, Y. J. Kime and J. L. Erskine
          J. Vac. Sci. Tech. A 7 (1989) 2070-2074.

76.   The Correlation Between Strain And Electronic Structure in Monolayer Thick Films; P. A. Dowben,
        Shikha Varma, Y. J. Kime, D. R. Muller and M. Onellion, Z. Phys. B 73 (1988) 247-255.

77.   The Interaction of Hg Overlayers with Ag(100) Surface; P. A. Dowben, Y. J. Kime, Shikha Varma,
        M. Onellion, and J. L. Erskine, Phys. Rev. B. 36 (1987) 2519-2529.

78.  Resonant Photoemission at the 5p and 4f Thresholds of Mercury; Shikha Varma, Y. J. Kime, P. A. Dowben,
      M. Onellion and J. L. Erskine, Phys. Lett. A. 116 (1986) 66-70.

79.   Structure Induced Electronic States For Hg Overlayers on Ag(100); M. Onellion, J. L. Erskine, Y. J. Kime,
        Shikha Varma, and P. A. Dowben,  Phys. Rev. B. (Rapid Communications), 33 (1986) 8833-8836.

80.   Characteristic Electron Energy Loss Studies of Molecular Halogens adsorbed on Fe(100); P.A. Dowben,
        M. Grunze, and Shikha Varma, Solid State Commun. 57 (1986) 631.