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51

Infrared ellipsometry and Raman studies of hexagonal InN films: correlation between strain and vibrational properties

V. Darakchieva, P.P. Paskov, E. Valcheva, T. Paskova, M. Schubert, C. Bundesmann, H. Lu, W.J. Schaff, B. Monemar

Journal:

Superlattices and Microstructures

Year:

2004

Language:

english

File:

PDF, 324 KB

english, 2004

52

Two-domain formation during the epitaxial growth of GaN (0001) on c-plane Al2O3 (0001) by high power impulse magnetron sputtering

Junaid, M., Lundin, D., Palisaitis, J., Hsiao, C.-L., Darakchieva, V., Jensen, J., Persson, P. O. A., Sandstrom, P., Lai, W.-J., Chen, L.-C., Chen, K.-H., Helmersson, U., Hultman, L., Birch, J.

Journal:

Journal of Applied Physics

Year:

2011

Language:

english

File:

PDF, 2.85 MB

english, 2011

53

Very high crystalline quality of thick 4H-SiC epilayers grown from methyltrichlorosilane (MTS)

H. Pedersen, S. Leone, A. Henry, V. Darakchieva, P. Carlsson, A. Gällström, E. Janzén

Journal:

physica status solidi (RRL) - Rapid Research Letters

Year:

2008

Language:

english

File:

PDF, 195 KB

english, 2008

54

Standard-free composition measurements of Alx In1–xN by low-loss electron energy loss spectroscopy

Justinas Palisaitis, Ching-Lien Hsiao, Muhammad Junaid, Mengyao Xie, Vanya Darakchieva, Jean-Francois Carlin, Nicolas Grandjean, Jens Birch, Lars Hultman, Per O. Å. Persson

Journal:

physica status solidi (RRL) - Rapid Research Letters

Year:

2011

Language:

english

File:

PDF, 499 KB

english, 2011

55

Epitaxial CVD growth of sp2-hybridized boron nitride using aluminum nitride as buffer layer

Mikhail Chubarov, Henrik Pedersen, Hans Högberg, Vanya Darakchieva, Jens Jensen, Per O. Å. Persson, Anne Henry

Journal:

physica status solidi (RRL) - Rapid Research Letters

Year:

2011

Language:

english

File:

PDF, 286 KB

english, 2011

56

Temperature dependent effective mass in AlGaN/GaN high electron mobility transistor structures

Hofmann, T., Kühne, P., Schöche, S., Chen, Jr-Tai, Forsberg, U., Janzén, E., Ben Sedrine, N., Herzinger, C. M., Woollam, J. A., Schubert, M., Darakchieva, V.

Journal:

Applied Physics Letters

Year:

2012

Language:

english

File:

PDF, 569 KB

english, 2012

57

Infrared to vacuum-ultraviolet ellipsometry and optical Hall-effect study of free-charge carrier parameters in Mg-doped InN

Schöche, S., Hofmann, T., Darakchieva, V., Ben Sedrine, N., Wang, X., Yoshikawa, A., Schubert, M.

Journal:

Journal of Applied Physics

Year:

2013

Language:

english

File:

PDF, 2.21 MB

english, 2013

58

Infrared dielectric functions and phonon modes of high-quality ZnO films

Ashkenov, N., Mbenkum, B. N., Bundesmann, C., Riede, V., Lorenz, M., Spemann, D., Kaidashev, E. M., Kasic, A., Schubert, M., Grundmann, M., Wagner, G., Neumann, H., Darakchieva, V., Arwin, H., Monemar

Journal:

Journal of Applied Physics

Year:

2003

Language:

english

File:

PDF, 429 KB

english, 2003

59

Anisotropic strain and phonon deformation potentials in GaN

Darakchieva, V., Paskova, T., Schubert, M., Arwin, H., Paskov, P. P., Monemar, B., Hommel, D., Heuken, M., Off, J., Scholz, F., Haskell, B. A., Fini, P. T., Speck, J. S., Nakamura, S.

Journal:

Physical Review B

Year:

2007

Language:

english

File:

PDF, 830 KB

english, 2007

60

Large-area microfocal spectroscopic ellipsometry mapping of thickness and electronic properties of epitaxial graphene on Si- and C-face of 3C-SiC(111)

Darakchieva, V., Boosalis, A., Zakharov, A. A., Hofmann, T., Schubert, M., Tiwald, T. E., Iakimov, T., Vasiliauskas, R., Yakimova, R.

Journal:

Applied Physics Letters

Year:

2013

Language:

english

File:

PDF, 1.72 MB

english, 2013

61

N: From ab initio calculations to experimental implications for the applicability of Vegard's rule

Xie, M.-Y., Tasnádi, F., Abrikosov, I. A., Hultman, L., Darakchieva, V.

Journal:

Physical Review B

Year:

2012

Language:

english

File:

PDF, 990 KB

english, 2012

62

superlattices

Darakchieva, V., Valcheva, E., Paskov, P. P., Schubert, M., Paskova, T., Monemar, B., Amano, H., Akasaki, I.

Journal:

Physical Review B

Year:

2005

Language:

english

File:

PDF, 185 KB

english, 2005

63

Y x Al 1− x N thin films

Žukauskaitė, Agnė, Tholander, Christopher, Palisaitis, Justinas, Persson, Per O Å, Darakchieva, Vanya, Sedrine, Nebiha Ben, Tasnádi, Ferenc, Alling, Björn, Birch, Jens, Hultman, Lars

Journal:

Journal of Physics D Applied Physics

Year:

2012

Language:

english

File:

PDF, 886 KB

english, 2012

64

Free electron behavior in InN: On the role of dislocations and surface electron accumulation

Darakchieva, V., Hofmann, T., Schubert, M., Sernelius, B. E., Monemar, B., Persson, P. O. Å., Giuliani, F., Alves, E., Lu, H., Schaff, W. J.

Journal:

Applied Physics Letters

Year:

2009

Language:

english

File:

PDF, 376 KB

english, 2009

65

Lattice parameters of GaN layers grown on a-plane sapphire: Effect of in-plane strain anisotropy

Darakchieva, V., Paskov, P. P., Paskova, T., Valcheva, E., Monemar, B., Heuken, M.

Journal:

Applied Physics Letters

Year:

2003

Language:

english

File:

PDF, 260 KB

english, 2003

66

Deformation potentials of the E[sub 1](TO) mode in AlN

Darakchieva, V., Paskov, P. P., Paskova, T., Birch, J., Tungasmita, S., Monemar, B.

Journal:

Applied Physics Letters

Year:

2002

Language:

english

File:

PDF, 240 KB

english, 2002

67

Effect of high-temperature annealing on the residual strain and bending of freestanding GaN films grown by hydride vapor phase epitaxy

Paskova, T., Hommel, D., Paskov, P. P., Darakchieva, V., Monemar, B., Bockowski, M., Suski, T., Grzegory, I., Tuomisto, F., Saarinen, K., Ashkenov, N., Schubert, M.

Journal:

Applied Physics Letters

Year:

2006

Language:

english

File:

PDF, 419 KB

english, 2006

68

Morphological and electronic properties of epitaxial graphene on SiC

Yakimova, R., Iakimov, T., Yazdi, G.R., Bouhafs, C., Eriksson, J., Zakharov, A., Boosalis, A., Schubert, M., Darakchieva, V.

Journal:

Physica B: Condensed Matter

Year:

2014

Language:

english

File:

PDF, 2.57 MB

english, 2014

69

Two-dimensional electron gas density in Al[sub 1−x]In[sub x]N/AlN/GaN heterostructures (0.03≤x≤0.23)

Gonschorek, M., Carlin, J.-F., Feltin, E., Py, M. A., Grandjean, N., Darakchieva, V., Monemar, B., Lorenz, M., Ramm, G.

Journal:

Journal of Applied Physics

Year:

2008

Language:

english

File:

PDF, 624 KB

english, 2008

70

Visible to vacuum ultraviolet dielectric functions of epitaxial graphene on 3C and 4H SiC polytypes determined by spectroscopic ellipsometry

Boosalis, A., Hofmann, T., Darakchieva, V., Yakimova, R., Schubert, M.

Journal:

Applied Physics Letters

Year:

2012

Language:

english

File:

PDF, 594 KB

english, 2012

71

[IEEE 2008 Conference on Optoelectronic and Microelectronic Materials and Devices (COMMAD) - Sydney, Australia (2008.07.28-2008.08.1)] 2008 Conference on Optoelectronic and Microelectronic Materials and Devices - Unravelling the free electron behavior in InN

Darakchieva, V., Hofmann, T., Schubert, M., Sernelius, B.E., Giuliani, F., Xie, M.-Y., Persson, P.O.A., Monemar, B., Schaff, W. J., Hsiao, C.-L., Chen, L.-C., Nanishi, Y.

Year:

2008

Language:

english

File:

PDF, 702 KB

english, 2008

72

On the lattice parameters of GaN

Darakchieva, V., Monemar, B., Usui, A.

Journal:

Applied Physics Letters

Year:

2007

Language:

english

File:

PDF, 443 KB

english, 2007

73

Hydrogen in InN: A ubiquitous phenomenon in molecular beam epitaxy grown material

Darakchieva, V., Lorenz, K., Barradas, N. P., Alves, E., Monemar, B., Schubert, M., Franco, N., Hsiao, C. L., Chen, L. C., Schaff, W. J., Tu, L. W., Yamaguchi, T., Nanishi, Y.

Journal:

Applied Physics Letters

Year:

2010

Language:

english

File:

PDF, 484 KB

english, 2010

74

Electron effective mass in Al0.72Ga0.28N alloys determined by mid-infrared optical Hall effect

Schöche, S., Kühne, P., Hofmann, T., Schubert, M., Nilsson, D., Kakanakova-Georgieva, A., Janzén, E., Darakchieva, V.

Journal:

Applied Physics Letters

Year:

2013

Language:

english

File:

PDF, 562 KB

english, 2013

75

Polarization Selection Rules for Inter-Landau-Level Transitions in Epitaxial Graphene Revealed by the Infrared Optical Hall Effect

Kühne, P., Darakchieva, V., Yakimova, R., Tedesco, J. D., Myers-Ward, R. L., Eddy, C. R., Gaskill, D. K., Herzinger, C. M., Woollam, J. A., Schubert, M., Hofmann, T.

Journal:

Physical Review Letters

Year:

2013

Language:

english

File:

PDF, 2.00 MB

english, 2013

76

thin layers prepared by ion-beam synthesis and solid-state reaction

Darakchieva, V., Baleva, M., Surtchev, M., Goranova, E.

Journal:

Physical Review B

Year:

2000

Language:

english

File:

PDF, 89 KB

english, 2000

77

layers

Darakchieva, V., Birch, J., Schubert, M., Paskova, T., Tungasmita, S., Wagner, G., Kasic, A., Monemar, B.

Journal:

Physical Review B

Year:

2004

Language:

english

File:

PDF, 330 KB

english, 2004

78

Assessing structural, free-charge carrier, and phonon properties of mixed-phase epitaxial films: The case of InN

Xie, M.-Y., Schubert, M., Lu, J., Persson, P. O. Å., Stanishev, V., Hsiao, C. L., Chen, L. C., Schaff, W. J., Darakchieva, V.

Journal:

Physical Review B

Year:

2014

Language:

english

File:

PDF, 2.39 MB

english, 2014

79

High-quality bulk a-plane GaN sliced from boules in comparison to heteroepitaxially grown thick films on r-plane sapphire

T. Paskova, R. Kroeger, S. Figge, D. Hommel, V. Darakchieva, B. Monemar, E. Preble, A. Hanser, N. M. Williams, M. Tutor

Year:

2006

Language:

english

File:

PDF, 454 KB

english, 2006

80

Deformation potentials of the E[sub 1](TO) and E[sub 2] modes of InN

V. Darakchieva, P. P. Paskov, E. Valcheva, T. Paskova, B. Monemar, M. Schubert, H. Lu, W. J. Schaff

Year:

2004

Language:

english

File:

PDF, 319 KB

english, 2004

81

Effect of Mg doping on the structural and free-charge carrier properties of InN films

Xie, M.-Y., Ben Sedrine, N., Schöche, S., Hofmann, T., Schubert, M., Hung, L., Monemar, B., Wang, X., Yoshikawa, A., Wang, K., Araki, T., Nanishi, Y., Darakchieva, V.

Journal:

Journal of Applied Physics

Year:

2014

Language:

english

File:

PDF, 2.51 MB

english, 2014

82

Effects of strain and composition on the lattice parameters and applicability of Vegard’s rule in Al-rich Al[sub 1−x]In[sub x]N films grown on sapphire

Darakchieva, V., Beckers, M., Xie, M.-Y., Hultman, L., Monemar, B., Carlin, J.-F., Feltin, E., Gonschorek, M., Grandjean, N.

Journal:

Journal of Applied Physics

Year:

2008

Language:

english

File:

PDF, 1.09 MB

english, 2008

83

Unintentional incorporation of hydrogen in wurtzite InN with different surface orientations

Darakchieva, V., Lorenz, K., Xie, M.-Y., Alves, E., Hsiao, C. L., Chen, L. C., Tu, L. W., Schaff, W. J., Yamaguchi, T., Nanishi, Y.

Journal:

Journal of Applied Physics

Year:

2011

Language:

english

File:

PDF, 1.17 MB

english, 2011

84

Structural anisotropy of nonpolar and semipolar InN epitaxial layers

Darakchieva, V., Xie, M.-Y., Franco, N., Giuliani, F., Nunes, B., Alves, E., Hsiao, C. L., Chen, L. C., Yamaguchi, T., Takagi, Y., Kawashima, K., Nanishi, Y.

Journal:

Journal of Applied Physics

Year:

2010

Language:

english

File:

PDF, 1.08 MB

english, 2010

85

Effect of nitrogen on the GaAs[sub 0.9−x]N[sub x]Sb[sub 0.1] dielectric function from the near-infrared to the ultraviolet

Ben Sedrine, N., Bouhafs, C., Harmand, J. C., Chtourou, R., Darakchieva, V.

Journal:

Applied Physics Letters

Year:

2010

Language:

english

File:

PDF, 762 KB

english, 2010

86

Direct graphene growth on Co 3 O 4 (111) by molecular beam epitaxy

Zhou, Mi, Pasquale, Frank L, Dowben, Peter A, Boosalis, Alex, Schubert, Mathias, Darakchieva, Vanya, Yakimova, Rositza, Kong, Lingmei, Kelber, Jeffry A

Journal:

Journal of Physics Condensed Matter

Year:

2012

Language:

english

File:

PDF, 530 KB

english, 2012

87

reaction: Neutron single-quasiparticle states at

Allmond, J. M., Beausang, C. W., Rasmussen, J. O., Ross, T. J., Basunia, M. S., Bernstein, L. A., Bleuel, D. L., Brooks, W., Brown, N., Burke, J. T., Darakchieva, B. K., Dudziak, K. R., Evans, K. E.,

Journal:

Physical Review C

Year:

2010

Language:

english

File:

PDF, 1019 KB

english, 2010

88

Stress evolution during growth of GaN (0001)/Al 2 O 3 (0001) by reactive dc magnetron sputter epitaxy

Junaid, M, Sandström, P, Palisaitis, J, Darakchieva, V, Hsiao, C-L, Persson, P O Å, Hultman, L, Birch, J

Journal:

Journal of Physics D Applied Physics

Year:

2014

Language:

english

File:

PDF, 1.81 MB

english, 2014

89

Bandgap Engineering and Optical Constants of Y x Al 1- x N Alloys

Sedrine, Nebiha Ben, Zukauskaite, Agne, Birch, Jens, Hultman, Lars, Darakchieva, Vanya

Journal:

Japanese Journal of Applied Physics

Year:

2013

Language:

english

File:

PDF, 762 KB

english, 2013

90

Strain evolution and phonons in AlN/GaN superlattices

Darakchieva, V., Paskov, P. P., Schubert, M., Valcheva, E., Paskova, T., Arwin, H., Monemar, B., Amano, H., Akasaki, I.

Journal:

MRS Proceedings

Year:

2003

Language:

english

File:

PDF, 133 KB

english, 2003

91

(Invited) Challenges of Graphene Growth on Silicon Carbide

Yakimova, R., Yazdi, G. R., Iakimov, T., Eriksson, J., Darakchieva, V.

Journal:

ECS Transactions

Year:

2013

Language:

english

File:

PDF, 1019 KB

english, 2013

92

Infrared ellipsometry and near-infrared-to-vacuum-ultraviolet ellipsometry study of free-charge carrier properties in In-polar p-type InN

Schöche, Stefan, Hofmann, Tino, Ben Sedrine, Nebiha, Darakchieva, Vanya, Wang, Xinqiang, Yoshikawa, Akihiko, Schubert, Mathias

Journal:

MRS Proceedings

Year:

2012

Language:

english

File:

PDF, 954 KB

english, 2012

93

Strain-free Low-defect-density Bulk GaN with Nonpolar Orientations

Paskova, Tanya, Paskov, Plamen P., Darakchieva, Vanya, Kroeger, Roland, Hommel, Detlef, Monemar, Bo, Lourdudoss, Sebastian, Preble, Edward, Hanser, Andrew, Williams, Mark N., Tutor, Michael

Journal:

MRS Proceedings

Year:

2006

Language:

english

File:

PDF, 1.10 MB

english, 2006

94

Very High Growth Rate of 4H-SiC Using MTS as Chloride-Based Precursor

Pedersen, Henke, Leone, Stefano, Henry, Anne, Beyer, Franziska C., Darakchieva, Vanya, Janzén, Erik

Journal:

Materials Science Forum

Year:

2009

Language:

english

File:

PDF, 369 KB

english, 2009

95

Structural properties and dielectric function of graphene grown by high-temperature sublimation on 4H-SiC(000-1)

Bouhafs, C., Darakchieva, V., Persson, I. L., Tiberj, A., Persson, P. O. Å., Paillet, M., Zahab, A.-A., Landois, P., Juillaguet, S., Schöche, S., Schubert, M., Yakimova, R.

Journal:

Journal of Applied Physics

Year:

2015

Language:

english

File:

PDF, 4.71 MB

english, 2015

96

Enhanced dynamic annealing and optical activation of Eu implanted a-plane GaN

Catarino, N., Nogales, E., Franco, N., Darakchieva, V., Miranda, S. M. C., Méndez, B., Alves, E., Marques, J. G., Lorenz, K.

Journal:

EPL (Europhysics Letters)

Year:

2012

Language:

english

File:

PDF, 335 KB

english, 2012

97

Spectroscopic Mapping Ellipsometry of Graphene Grown on 3C SiC

Boosalis, Alexander, Hofmann, Tino, Darakchieva, Vanya, Yakimova, Rositza, Tiwald, Tom, Schubert, Mathias

Journal:

MRS Proceedings

Year:

2012

Language:

english

File:

PDF, 520 KB

english, 2012

98

Europium doping of zincblende GaN by ion implantation

Lorenz, K., Roqan, I. S., Franco, N., O’Donnell, K. P., Darakchieva, V., Alves, E., Trager-Cowan, C., Martin, R. W., As, D. J., Panfilova, M.

Journal:

Journal of Applied Physics

Year:

2009

Language:

english

File:

PDF, 895 KB

english, 2009

99

Polyether Antibiotic Complex Produced by Streptomyces hygroscopicus IM—110–81

Darakchieva, M., Ratchev, Rosen, Sachanekova, Margarita, Tzvetkova, Rousa, Gameyska, Yor danka, Popov, Kiril, Roussev, Pancho, Schlegel, R., Kleinwachter, W., Thrum, H., Даракчиева, М., Рачев, Р., Сах

Journal:

Biotechnology & Bioindustry

Year:

1987

Language:

english

File:

PDF, 520 KB

english, 1987

100

SPIE Proceedings [SPIE SPIE Microtechnologies - Barcelona, Spain (Monday 4 May 2015)] Nanotechnology VII - Atomic layer deposition of Al 2 O 3 on NF 3 -pre-treated graphene

Tiginyanu, Ion M., Junige, Marcel, Oddoy, Tim, Yakimova, Rositsa, Darakchieva, Vanya, Wenger, Christian, Lupina, Grzegorz, Kitzmann, Julia, Albert, Matthias, Bartha, Johann W.

Year:

2015

Language:

english

File:

PDF, 1.49 MB

english, 2015