Research

CV and Publication List [pdf]

Personal Profiles at Databases:
> ORCID ID: 0000-0003-0800-1924
> ResearcherID: B-8207-2009
> Scopus Author ID: 7004149010
> ResearchGate
> Google Scholar

Current research interests include:

• First-principles modelling of materials; graphene and other 2D materials; quantum transport; spintronics
Using density-functional-theory-based methods, investigating electronic, magnetic, mechanical, transport and optical properties of various low dimensional systems including carbon nanotubes, graphene, transition-metal-chalcogenides.

• Electron-phonon interactions, theory of polarons, bipolarons, excitons
Investigating Fröhlich polarons and bipolarons in low dimensional systems, exitonic properties and photoluminescence in semiconductors.

Recent Projects:

• Enhancement of Thermoelectric Eficiency in Novel Two-dimensional Materials Through Nanostructuring
(2017 – 2020) TÜBİTAK 117F131, Principle Investigator

• Ultrathin Transition-Metal-Dichalcogenides, III-V Compounds, and their Heterostructures
(2015 – 2017) TÜBİTAK 114F397, Principle Investigator

• Design and Electronic Properties of Graphene-based Nanostructures
(2011 – 2014) TÜBİTAK 111T318, Principle Investigator

• Spin Conductance and Magnetic Properties of Nanowires and Molecular Structures
(2007 – 2010) TÜBİTAK 106T597, Principle Investigator

.

Science Citation Index (SCI) Journal Papers

2022

79. Highly Mobile Excitons in Single Crystal Methylammonium Lead Tribromide Perovskite Microribbons
    L. McClintock, Z. Song, H. C. Travaglini, R. T. Senger, V. Chandrasekaran, H. Htoon, D. Yarotski, D. Yu
    Journal of Physical Chemistry Letters 13, 3698 (2022)

    2021

78. Transport Modeling of Locally Photogenerated Excitons in Halide Perovskites
    K. W. Tang, S. Li, S. Weeden, Z. Song, L. McClintock, R. Xiao, R. T. Senger, D. Yu
    Journal of Physical Chemistry Letters 12, 3951 (2021)

77. Enhancement of thermoelectric efficiency of T-HfSe2 via nanostructuring
    E. Ünsal, R. T. Senger, H. Sevinçli
    Physical Review B 103, 014104 (2021)

    2020

76. Temperature and Gate Dependence of Carrier Diffusion in Single Crystal Methylammonium Lead Iodide Perovskite Microstructures
    L. McClintock, R. Xiao, Y. Hou, C. Gibson, H. C. Travaglini, D. Abramovitch, L. Z. Tan, R. T. Senger, Y. Fu, S. Jin, D. Yu
    Journal of Physical Chemistry Letters 11, 1000 (2020)

    2019

75. Stacking-dependent excitonic properties of bilayer blue phosphorene
    F. Iyikanat, E. Torun, R. T. Senger, H. Sahin
    Physical Review B 100, 125423 (2019)

74. Ballistic thermoelectric properties of monolayer semiconducting transition metal dichalcogenides and oxides
    G. Özbal, R. T. Senger, C. Sevik, H. Sevinçli
    Physical Review B 100, 085415 (2019)

73. Monitoring the characteristic properties of Ga-doped ZnO by Raman spectroscopy and atomic scale calculations
    S. Horzum, F. Iyikanat, R. T. Senger, C. Çelebi, M. Sbeta, A. Yildiz, T. Serin
    Journal of Molecular Structure 1180, 505 (2019)

    2018

72. Hydrogenated Derivatives of Hexacoordinated Metallic Cu2Si Monolayer
    E. Unsal, F. Iyikanat, H. Sahin, R. T. Senger
    RSC Advances 8, 39976 (2018)

71. Directed growth of hydrogen lines on graphene: High-throughput simulations powered by evolutionary algorithm
    G. Özbal, J. T. Falkenberg, M. Brandbyge, R. T. Senger, H. Sevinçli
    Physical Review Materials 2, 073406 (2018)

70. Strain mapping in single-layer two-dimensional crystals via Raman activity
    M. Yagmurcukardes, C. Bacaksiz, E. Unsal, B. Akbali, R. T. Senger, H. Sahin
    Physical Review B 97, 115427 (2018)

69. Tuning Electronic and Magnetic Properties of Monolayer α-RuCl3 by In-plane Strain
    F. Iyikanat, M. Yagmurcukardes, R. T. Senger, H. Sahin
    Journal of Materials Chemistry C 6, 2019 (2018)

68. Experimental and computational investigation of graphene/SAMs/n-Si Schottky diodes
    H. Aydin, C. Bacaksiz, N. Yagmurcukardes, C. Karakaya, O. Mermer, M. Can, R. T. Senger, H. Sahin, Y. Selamet
    Applied Surface Science 428, 1010 (2018)

    2017

67. Stable Monolayer α-Phase of CdTe: Strain-Dependent Properties
    E. Unsal, R. T. Senger, H. Sahin
    Journal of Materials Chemistry C 5, 12249 (2017)

66. Hydrogenation-driven phase transition in single-layer TiSe2
    F. Iyikanat, A. Kandemir, H. D. Ozaydin, R. T. Senger, H. Sahin
    Nanotechnology 28, 495709 (2017)

65. Stable Ultra-thin CdTe Crystal: A Robust Direct Gap Semiconductor
    F. Iyikanat, B. Akbali, J. Kang, R. T. Senger, Y. Selamet, H. Sahin
    Journal of Physics: Condensed Matter 29, 485302 (2017)

64. Hydrogen-Induced Structural Transition in Single Layer ReS2
    M. Yagmurcukardes, C. Bacaksiz, R. T. Senger, H. Sahin
    2D Materials 4, 035013 (2017)

63. Nitrogen doping for facile and effective modification of graphene surfaces
    A. Yanilmaz, A. Tomak, B. Akbali, C. Bacaksiz, E. Ozceri, O. Ari, R. T. Senger, Y. Selamet, H. M. Zareie
    RSC Advances 7, 28383 (2017)

62. Ultra-Thin ZnSe: Anisotropic and Flexible Crystal Structure
    C. Bacaksiz, R. T. Senger, H. Sahin
    Applied Surface Science 409, 426 (2017)

61. h-AlN-Mg(OH)2 van der Waals bilayer heterostructure: Tuning the excitonic characteristics
    C. Bacaksiz, A. Dominguez, A. Rubio, R. T. Senger, H. Sahin
    Physical Review B 95, 075423 (2017)

60. Atomic-scale understanding of dichlorobenzene-assisted poly 3-hexylthiophene-2,5-diyl nanowire formation mechanism
    M. Yagmurcukardes, D. Kiymaz, C. Zafer, R. T. Senger, H. Sahin
    Journal of Molecular Structure 1134, 681 (2017)

    2016

59. Mechanical properties of monolayer GaS and GaSe crystals
    M. Yagmurcukardes, R. T. Senger, F. M. Peeters, H. Sahin
    Physical Review B 94, 245407 (2016)

58. Nanoribbons: from Fundamentals to State-of-the-art Applications
    M. Yagmurcukardes, F. M. Peeters, R. T. Senger , H. Sahin
    Applied Physics Reviews 3, 041302 (2016)

57. Mg(OH)2-WS2 van der Waals heterobilayer: Electric field tunable band-gap crossover
    M. Yagmurcukardes, E. Torun, R. T. Senger, F. M. Peeters, H. Sahin
    . Physical Review B 94, 195403 (2016)

56. Quantum Transport Characteristics of Lateral pn-Junction of Single Layer TiS3
    F. İyikanat, R. T. Senger, F. M. Peeters, H. Sahin
    ChemPhysChem 17, 3985 (2016)

55. Controlled growth mechanism of poly (3-hexylthiophene) nanowires
    D. Kiymaz, M. Yagmurcukardes, A. Tomak, H. Sahin, R. T. Senger, F. M. Peeters, H. M. Zareie, C. Zafer
    Nanotechnology 27, 455604 (2016)

54. Structural Changes in Schiff Base Molecular Assembly Initiated by Scanning Tunneling Microscopy Tip
    A. Tomak, C. Bacaksiz, G. Mendirek, H Sahin, D. Hur, K. Gorgun, R. T. Senger, O. Birer, F. M. Peeters, H. Zareie
    Nanotechnology 27, 335601 (2016)

53. Bilayer SnS2: Easy-tunable stacking sequence by charging and loading pressure
    C. Bacaksiz, S. Cahangirov, A. Rubio, R. T. Senger, F. M. Peeters, H. Sahin
    Physical Review B 93, 125403 (2016)

52. Computing Optical Properties of Ultra-thin Crystals
    H. Sahin, E. Torun, C. Bacaksiz, S. Horzum, J. Kang, R. T. Senger, F. M. Peeters
    WIREs Computational Molecular Science 6, 351 (2016)

51. Nitrogenated, Phosphorated and Arsenicated Monolayer Holey Graphenes
    M. Yagmurcukardes, S. Horzum, E. Torun, F. M. Peeters, R. T. Senger
    Physical Chemistry Chemical Physics 18, 3144 (2016)

    2015

50. Electronic and Magnetic Properties of 1T-TiSe2 Nanoribbons
    H. D. Ozaydin, H. Sahin, J. Kang, F. M. Peeters, R. T. Senger
    2D Materials 2, 044002 (2015) [PDF]

49. Layer and strain-dependent optoelectronic properties of hexagonal AlN
    D. Kecik, C. Bacaksiz, R. T. Senger, E. Durgun
    Physical Review B 92, 165408 (2015) [PDF]

48. Tuning the magnetic anisotropy in single layer crystal structures
    E. Torun, H. Sahin, C. Bacaksiz, R. T. Senger, F. M. Peeters
    Physical Review B 92, 104407 (2015) [PDF]

47. Pentagonal monolayer crystals of carbon, boron nitride, and silver azide
    M. Yagmurcukardes, H. Sahin, J. Kang, E. Torun, F. M. Peeters, R. T. Senger
    Journal of Applied Physics 118, 104303 (2015) [PDF]

46. TiS3 nanoribbons: Width-independent band gap and strain-tunable electronic properties
    J. Kang, H. Sahin, H. D. Ozaydin, R. T. Senger, F. M. Peeters
    Physical Review B 92, 075413 (2015) [PDF]

45. Portlandite crystal: Bulk, bilayer, and monolayer structures
    Y. Aierken, H. Sahin, F. Iyikanat, S. Horzum, A. Suslu, B. Chen, R. T. Senger, S. Tongay, F. M. Peeters
    Physical Review B 91, 245413 (2015) [PDF]

44. Vacancy Formation and Oxidation Characteristics of Single Layer TiS3
    F. Iyikanat, H. Sahin, R. T. Senger, F. M. Peeters
    Journal of Physical Chemistry C 119, 10709 (2015) [PDF]

43. Hexagonal AlN: Dimensional-crossover-driven band-gap transition
    C. Bacaksız, H. Sahin, H. D. Ozaydin, S. Horzum, R. T. Senger, F. M. Peeters
    Physical Review B 91, 085430 (2015) [PDF]

    2014

42. Ag and Au atoms intercalated in bilayer heterostructures of transition metal dichalcogenides and graphene
    F. Iyikanat, H. Sahin, R. T. Senger, F. M. Peeters
    APL Materials 2, 092801 (2014) [PDF]

41. Formation and diffusion characteristics of Pt clusters on Graphene, 1H-MoS2 and 1T-TaS2
    H. D. Ozaydin, H. Sahin, R. T. Senger, F. M. Peeters
    Annalen der Physik 526, 423 (2014) [PDF]

    2013 ... 2008

40. Cleavage induced rows of missing atoms on ZnTe (110) surface
    C. Çelebi, O. Arı, R. T. Senger
    Physical Review B 87, 085308 (2013) [PDF]

39. Hartree-Fock approximation of bipolaron state in quantum dots and wires
    R. T. Senger, B. Kozal, A. Chatterjee, A. Erçelebi
    European Physical Journal B 78, 525 (2010) [PDF]

38. Spintronic properties of zigzag-edged triangular graphene flakes
    H. Şahin, R. T. Senger, S. Ciraci
    Journal of Applied Physics 108, 074301 (2010) [PDF]

37. Monolayer honeycomb structures of group-IV elements and III-V binary compounds: First-principles calculations
    H. Şahin, S. Cahangirov, M. Topsakal, E. Bekaroglu, E. Akturk, R. T. Senger, S. Ciraci
    Physical Review B 80, 155453 (2009) [PDF]

36. First principles calculations of spin-dependent conductance of graphene flakes
    H. Şahin, R. T. Senger
    Physical Review B 78, 205423 (2008) [PDF]

    2007

35. Dynamics of Phononic Dissipation at the Atomic Scale: Dependence on Internal Degrees of Freedom
    H. Seviçli, S. Mukhopadhyay, R. T. Senger, S. Ciraci
    Physical Review B 76, 205430 (2007) [PDF]

34. Nitrogen incorporation and optical studies of GaAsSbN/GaAs single quantum well heterostructures
    K. Nunna, S. Iyer, L. Wu, J. Li, S. Bharatan, X. Wei, R. T. Senger, K. K. Bajaj
    Journal of Applied Physics 102, 053106 (2007) [PDF]

33. Optical Studies of MBE Grown GaAsSbN/GaAs Single Quantum Well Structures
    K. Nunna, S. Iyer, L. Wu, S. Bharatan, J. Li, K. K. Bajaj, X. Wei, R. T. Senger
    Journal of Vacuum Science and Technology B 25, 1113 (2007) [PDF]

32. Oscillatory Exchange Coupling in Linear Magnetic Molecules
    H. Sevinçli, R. T. Senger, E. Durgun, S. Ciraci
    Journal of Physics: Condensed Matter 19, 216205 (2007) [PDF]

    2006

31. Spintronic properties of carbon-based one-dimensional molecular structures
    E. Durgun, R. T. Senger, H. Sevinçli, H. Mehrez, S. Ciraci
    Physical Review B 74, 235413 (2006) [PDF]

30. Size-dependent alternation of magnetoresistive properties in atomic chains
    E. Durgun, R. T. Senger, H. Mehrez, H. Sevinçli, S. Ciraci
    Journal of Chemical Physics 125, 121102 (2006) [PDF]

29. Monte-Carlo simulation of localization dynamics of excitons in ZnO and CdZnO quantum well structures
    T. Makino, K. Saito, A. Ohtomo, M. Kawasaki, R. T. Senger, K. K. Bajaj
    Journal of Applied Physics 99, 066108 (2006) [PDF]

28. Nanospintronic Properties of Carbon-Cobalt Atomic Chains
    E. Durgun, R. T. Senger, H. Mehrez, S. Dag, S. Ciraci
    Europhysics Letters 73, 642 (2006) [PDF]

27. Determination of energy band offsets between GaN and AlN using excitonic luminescence transition in AlGaN alloys
    A. N. Westmeyer, S. Mahajan, K. K. Bajaj, J. Y. Lin, H. X. Jiang, D. D. Koleske, R. T. Senger
    Journal of Applied Physics 99, 013705 (2006) [PDF]

    2005

26. Half-metallic properties of atomic chains of carbon-transition metal compounds
    S. Dag, S. Tongay, T. Yildirim, E. Durgun, R. T. Senger, C. Y. Fong, S. Ciraci
    Physical Review B 72, 155444 (2005) [PDF]

25. Atomic chains of group-IV elements and III-V and II-VI binary compounds studied by a first-principles pseudopotential method
    R. T. Senger, S. Tongay, E. Durgun, S. Ciraci
    Physical Review B 72, 075419 (2005) [PDF]

24. Atomic and electronic structure of carbon strings
    S. Tongay, S. Dag, E. Durgun, R. T. Senger, S. Ciraci
    Journal of Physics: Condensed Matter 17, 3823 (2005) [PDF]

23. Carbon string structures: First-principles calculations of quantum conductance
    R. T. Senger, S. Tongay, S. Dag, E. Durgun, S. Ciraci
    Physical Review B 71, 235406 (2005) [PDF]

    2004

22. Theoretical study of crossed and parallel carbon nanotube junctions and three-dimensional grid structures
    S. Dag, R. T. Senger, S. Ciraci
    Physical Review B 70, 205407 (2004) [PDF]

21. Chiral single-wall gold nanotubes
    R. T. Senger, S. Dag, S. Ciraci
    Physical Review Letters 93, 196707 (2004) [PDF]

20. Ab-initio electron transport calculations of carbon based string structures
    S. Tongay, R. T. Senger, S. Dag, S. Ciraci
    Physical Review Letters 93, 136404 (2004) [PDF]

19. Functionalized carbon nanotubes and device applications
    S. Ciraci, S. Dag, T. Yildirim, O. Gulseren, R. T. Senger
    Journal of Physics: Condensed Matter 16, R901 (2004) [PDF]

18. Binding energies of excitons in II-VI compound-semiconductor-based quantum well structures
    R. T. Senger, K.K. Bajaj
    physica status solidi (b) 241, 1986 (2004) [PDF]

    2003

17. Magnetoluminescence properties of GaAsSbN/GaAs quantum well structures
    R. T. Senger, K. K. Bajaj, E. D. Jones, N. A. Modine, K. E. Waldrip, F. Jalali, J. F. Klem, G. M. Peake, X. Wei, S. W. Tozer
    Applied Physics Letters 83, 5425 (2003) [PDF]

16. Photoluminescence excitonic linewidth in GaAsN alloys
    R. T. Senger, K. K. Bajaj
    Journal of Applied Physics 94, 7505 (2003) [PDF]

15. Binding energies of excitons in polar quantum well heterostructures
    R. T. Senger, K. K. Bajaj
    Physical Review B 68, 205314 (2003) [PDF]

14. Magneto-optical properties of GaAsSb/GaAs quantum wells
    R. T. Senger, K. K. Bajaj, E. D. Jones, N. A. Modine, K. E. Waldrip, F. Jalali, J. F. Klem, G. M. Peake, X. Wei, S. W. Tozer
    Applied Physics Letters 83, 2614 (2003) [PDF]

13. Optical properties of confined polaronic excitons in spherical ionic quantum dots
    R. T. Senger, K. K. Bajaj
    Physical Review B 68, 045313 (2003) [PDF]

12. Polaronic exciton in a parabolic quantum dot
    R. T. Senger, K. K. Bajaj
    physica status solidi (b) 236, 82 (2003) [PDF]

    2002

11. Strong-coupling theory of two dimensional large bipolarons in elliptical quantum dots
    R. T. Senger, A. Erçelebi
    European Physical Journal B 26, 253 (2002) [PDF]

10. On the stability of Fröhlich bipolarons in spherical quantum dots
    R. T. Senger, A. Erçelebi
    Journal of Physics: Condensed Matter 14, 5549 (2002) [PDF]

9. Energy-transfer rate in a double-quantum-well system due to Coulomb coupling
   R. T. Senger, B. Tanatar
   Solid State Communications 121, 61 (2002) [PDF]

   2000 ... 1994

8. Stability of low-dimensionally-confined bipolarons
   R. T. Senger, A. Erçelebi
   European Physical Journal B 16, 439 (2000) [PDF]

7. Path-integral approximation on the stability of large bipolarons in quasi-one-dimensional confinement
   R. T. Senger, A. Erçelebi
   Physical Review B 61, 6063 (2000) [PDF]

6. Quasi-two-dimensional Feynman bipolarons
   R. T. Senger, A. Erçelebi
   Physical Review B 60, 10070 (1999) [PDF]

5. Path Integral Description of Low Dimensional Polarons in Parabolic Confinement Potentials
   R. T. Senger, A. Erçelebi
   Journal of Physics: Condensed Matter 9, 5067 (1997) [PDF]

4. Strong Coupling Characterisation of Quasi-1D Polarons in Cylindrical QW-Wires
   A. Erçelebi, R. T. Senger
   Solid State Communications 97, 509 (1996) [PDF]

3. Ground State Description of Quasi-1D Polarons with Arbitrary Electron-Phonon Coupling Strength
   A. Erçelebi, R. T. Senger
   Physical Review B 53, 11008 (1996) [PDF]

2. A Variational Study of the Ground Landau Level of the 2D-Fröhlich Polaron in a Magnetic Field
   A. Erçelebi, R. T. Senger
   Journal of Physics: Condensed Matter 7, 9989 (1995) [PDF]

1. Energy and Mass of 3D and 2D Polarons in the Overall Range of the Electron-Phonon Coupling Strength
   A. Erçelebi, R. T. Senger
   Journal of Physics: Condensed Matter 6, 5455 (1994) [PDF]