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2019

DC and dynamic switching characteristics of field-plated vertical geometry β-Ga 2 O 3 rectifiers

Yang, J., Carey, P., Ren, F., Chen, Y. T., Liao, Y., Chang, C. W., Lin, J., Tadjer, M., Pearton, S. J., Smith, D. & Kuramata, A., Jan 1 2019, Oxide-Based Materials and Devices X. Rogers, D. J., Teherani, F. H. & Look, D. C. (eds.). SPIE, 1091916. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 10919).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

rectifiers
Electric breakdown
Breakdown
Reverse
Diodes

Defects at the surface of β -Ga2O3 produced by Ar plasma exposure

Polyakov, A. Y., Lee, I. H., Smirnov, N. B., Yakimov, E. B., Shchemerov, I. V., Chernykh, A. V., Kochkova, A. I., Vasilev, A. A., Carey, P. H., Ren, F., Smith, D. & Pearton, S. J., Jun 1 2019, In : APL Materials. 7, 6, 061102.

Research output: Contribution to journalArticle

Open Access
Plasmas
Defects
Electron traps
Vapor phase epitaxy
Inductively coupled plasma

Molecular beam epitaxial growth and structural properties of hetero-crystalline and heterovalent PbTe/CdTe/InSb structures

Lassise, M. B., McCarthy, T. T., Tracy, B. D., Smith, D. & Zhang, Y. H., Jul 28 2019, In : Journal of Applied Physics. 126, 4, 045708.

Research output: Contribution to journalArticle

Open Access
molecular beams
halites
zincblende
chalcogenides
photometers
Electron holography
holography
Electrostatics
electrostatics
Charge density

Self-assembled Bismuth Selenide (Bi 2 Se 3 ) quantum dots grown by molecular beam epitaxy

Claro, M. S., Levy, I., Gangopadhyay, A., Smith, D. & Tamargo, M. C., Dec 1 2019, In : Scientific reports. 9, 1, 3370.

Research output: Contribution to journalArticle

Open Access
Quantum Dots
Bismuth
Atomic Force Microscopy
Growth
Selenium

Strain-dependence of χ (2) in thin film barium strontium titanate

Foster, N. D., Edmondson, B. I., Ekerdt, J. G., Smith, D. & Downer, M. C., Feb 1 2019, In : AIP Advances. 9, 2, 025312.

Research output: Contribution to journalArticle

Open Access
strontium
barium
harmonic generations
thin films
electro-optics

Strain relaxation in low-mismatched GaAs/GaAs1-xSbx/GaAs heterostructures

Gangopadhyay, A., Maros, A., Faleev, N. & Smith, D., Jan 1 2019, In : Acta Materialia. 162, p. 103-115 13 p.

Research output: Contribution to journalArticle

Strain relaxation
Heterojunctions
Thick films
Film thickness
High resolution transmission electron microscopy
2018
1 Citation (Scopus)

An EELS signal-from-background separation algorithm for spectral line-scan/image quantification

Lu, S., Kormondy, K. J., Demkov, A. A. & Smith, D., Dec 1 2018, In : Ultramicroscopy. 195, p. 25-31 7 p.

Research output: Contribution to journalArticle

Electron energy loss spectroscopy
line spectra
Energy dissipation
energy dissipation
regression analysis
1 Citation (Scopus)

Atomic structure of dissociated 60° dislocations in GaAs/GaAs0.92Sb0.08/GaAs heterostructures

Gangopadhyay, A., Maros, A., Faleev, N. & Smith, D., Aug 1 2018, In : Scripta Materialia. 153, p. 77-80 4 p.

Research output: Contribution to journalArticle

Stacking faults
atomic structure
Heterojunctions
Strain relaxation
Aberrations

Correlative characterization of dislocation defects and defect clusters in GaAs and CdTe solar cells by spatially resolved optical techniques and high-resolution TEM

Chen, Q., McKeon, B. S., Becker, J., Zhang, S., Hu, C. K., Gfroerer, T. H., Gfroerer, T. H., Zhang, Y-H., Smith, D. & Zhang, Y., Nov 26 2018, 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., p. 3234-3236 3 p. 8548288. (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Solar cells
Transmission electron microscopy
Defects
Electroluminescence
Photoluminescence
3 Citations (Scopus)

Crystalline SrZrO3 deposition on Ge (001) by atomic layer deposition for high-k dielectric applications

Hu, S., Ji, L., Chen, P. Y., Edmondson, B. I., Chang, H. L., Posadas, A., Wu, H. W., Yu, E. T., Smith, D., Demkov, A. A. & Ekerdt, J. G., Jul 28 2018, In : Journal of Applied Physics. 124, 4, 044102.

Research output: Contribution to journalArticle

atomic layer epitaxy
electrical measurement
capacitance
oxygen plasma
metal oxide semiconductors
3 Citations (Scopus)

Effect of SrTiO 3 oxygen vacancies on the conductivity of LaTiO 3 /SrTiO 3 heterostructures

Edmondson, B. I., Liu, S., Lu, S., Wu, H. W., Posadas, A., Smith, D., Gao, X. P. A., Demkov, A. A. & Ekerdt, J. G., Nov 14 2018, In : Journal of Applied Physics. 124, 18, 185303.

Research output: Contribution to journalArticle

conductivity
oxygen
partial pressure
templates
cells
1 Citation (Scopus)

EuO epitaxy by oxygen scavenging on SrTiO 3 (001): Effect of SrTiO 3 thickness and temperature

Guo, W., Posadas, A. B., Lu, S., Smith, D. & Demkov, A. A., Dec 21 2018, In : Journal of Applied Physics. 124, 23, 235301.

Research output: Contribution to journalArticle

scavenging
epitaxy
oxygen
temperature
ferromagnetic materials
1 Citation (Scopus)

Growth of II-VI/III-V heterovalent quantum structures

Lassise, M. B., Wang, P., Tracy, B. D., Chen, G., Smith, D. & Zhang, Y-H., Mar 1 2018, In : Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics. 36, 2, 02D110.

Research output: Contribution to journalArticle

Semiconductor quantum wells
Heterojunctions
Defects
Optical transitions
Epilayers
1 Citation (Scopus)

Impact of metastable phases on electrical properties of Si with different doping concentrations after processing by high-pressure torsion

Chon, B., Ikoma, Y., Kohno, M., Shiomi, J., McCartney, M., Smith, D. & Horita, Z., Dec 1 2018, In : Scripta Materialia. 157, p. 120-123 4 p.

Research output: Contribution to journalArticle

Metastable phases
Torsional stress
torsion
Electric properties
electrical properties
2 Citations (Scopus)

Investigation of defect creation in GaP/Si(0 0 1) epitaxial structures

Zhang, C., Boley, A., Faleev, N., Smith, D. & Honsberg, C., Dec 1 2018, In : Journal of Crystal Growth. 503, p. 36-44 9 p.

Research output: Contribution to journalArticle

Molecular beam epitaxy
Defects
defects
molecular beam epitaxy
Defect density
9 Citations (Scopus)

Large positive linear magnetoresistance in the two-dimensional t 2g electron gas at the EuO/SrTiO3 interface

Kormondy, K. J., Gao, L., Li, X., Lu, S., Posadas, A. B., Shen, S., Tsoi, M., McCartney, M., Smith, D., Zhou, J., Lev, L. L., Husanu, M. A., Strocov, V. N. & Demkov, A. A., Dec 1 2018, In : Scientific Reports. 8, 1, 7721.

Research output: Contribution to journalArticle

electron gas
oxides
proximity
oxygen
leaves
1 Citation (Scopus)

Microstructural Characterization of Defects and Chemical Etching for HgCdSe/ZnTe/Si (211) Heterostructures

Vaghayenegar, M., Doyle, K. J., Trivedi, S., Wijewarnasuriya, P. & Smith, D., Jan 1 2018, (Accepted/In press) In : Journal of Electronic Materials.

Research output: Contribution to journalArticle

etchants
Stacking faults
Heterojunctions
Etching
etching

Surface structure analysis of Eu Zintl template on Ge(001)

Ponath, P., Hamze, A. K., Posadas, A. B., Lu, S., Wu, H. W., Smith, D. & Demkov, A. A., Aug 1 2018, In : Surface Science. 674, p. 94-102 9 p.

Research output: Contribution to journalArticle

Europium
europium
Surface structure
Monolayers
templates
2017
34 Citations (Scopus)

Above 400-K robust perpendicular ferromagnetic phase in a topological insulator

Tang, C., Chang, C. Z., Zhao, G., Liu, Y., Jiang, Z., Liu, C. X., McCartney, M., Smith, D., Chen, T., Moodera, J. S. & Shi, J., Jun 1 2017, In : Science advances. 3, 6, e1700307.

Research output: Contribution to journalArticle

Anisotropy
Temperature
Spectrum Analysis

AlGaN/GaN High electron mobility transistor grown and fabricated on ZrTi metallic alloy buffer layers

Ren, F., Pearton, S. J., Ahn, S., Lin, Y. H., Machuca, F., Weiss, R., Welsh, A., McCartney, M., Smith, D. & Kravchenko, I. I., Jan 1 2017, In : ECS Journal of Solid State Science and Technology. 6, 11, p. S3078-S3080

Research output: Contribution to journalEditorial

High electron mobility transistors
Buffer layers
Transmission electron microscopy
X rays
Full width at half maximum
3 Citations (Scopus)

Band offsets of epitaxial cubic boron nitride deposited on polycrystalline diamond via plasma-enhanced chemical vapor deposition

Shammas, J., Yang, Y., Wang, X., Koeck, F. A. M., McCartney, M., Smith, D. & Nemanich, R., Oct 23 2017, In : Applied Physics Letters. 111, 17, 171604.

Research output: Contribution to journalArticle

boron nitrides
diamonds
vapor deposition
photoelectron spectroscopy
conduction bands
3 Citations (Scopus)

Correlation of Etch Pits and Dislocations in As-grown and Thermal Cycle-Annealed HgCdTe(211) Films

Vaghayenegar, M., Jacobs, R. N., Benson, J. D., Stoltz, A. J., Almeida, L. A. & Smith, D., Apr 14 2017, (Accepted/In press) In : Journal of Electronic Materials. p. 1-13 13 p.

Research output: Contribution to journalArticle

Dislocations (crystals)
Annealing
Burgers vector
cycles
Defects
9 Citations (Scopus)

Epitaxial growth of barium titanate thin films on germanium via atomic layer deposition

Lin, E. L., Posadas, A. B., Wu, H. W., Smith, D., Demkov, A. A. & Ekerdt, J. G., Oct 15 2017, In : Journal of Crystal Growth. 476, p. 6-11 6 p.

Research output: Contribution to journalArticle

Germanium
Barium titanate
Atomic layer deposition
atomic layer epitaxy
Epitaxial growth
9 Citations (Scopus)

High-resolution transmission electron microscopy analysis of bulk nanograined silicon processed by high-pressure torsion

Fukushima, Y., Ikoma, Y., Edalati, K., Chon, B., Smith, D. & Horita, Z., Jul 1 2017, In : Materials Characterization. 129, p. 163-168 6 p.

Research output: Contribution to journalArticle

Silicon
High resolution transmission electron microscopy
Torsional stress
torsion
transmission electron microscopy
6 Citations (Scopus)

High-resolution transmission electron microscopy analysis of nanograined germanium produced by high-pressure torsion

Ikoma, Y., Kumano, K., Edalati, K., McCartney, M., Smith, D. & Horita, Z., Oct 1 2017, In : Materials Characterization. 132, p. 132-138 7 p.

Research output: Contribution to journalArticle

Germanium
High resolution transmission electron microscopy
Torsional stress
torsion
germanium
2 Citations (Scopus)

Integration of ferroelectric BaTiO3 with Ge: The role of a SrTiO3 buffer layer investigated using aberration-corrected STEM

Wu, H., Lu, S., Aoki, T., Ponath, P., Ekerdt, J. G., Demkov, A. A., McCartney, M. & Smith, D., Jun 19 2017, In : Applied Physics Letters. 110, 25, 252901.

Research output: Contribution to journalArticle

aberration
antiphase boundaries
buffers
polarization
molecular beam epitaxy

Microscale magnetic compasses

Shiozawa, H., Zhang, D., Eisterer, M., Ayala, P., Pichler, T., McCartney, M. & Smith, D., Sep 7 2017, In : Journal of Applied Physics. 122, 9, 094301.

Research output: Contribution to journalArticle

magnetic compasses
microbalances
needles
magnetorheological fluids
absorbents
1 Citation (Scopus)

Quaternary BeMgZnO by plasma-enhanced molecular beam epitaxy for BeMgZnO/ZnO heterostructure devices

Ullah, M. B., Toporkov, M., Avrutin, V., Özgür, Smith, D. & Morkoç, H., 2017, Oxide-Based Materials and Devices VIII 2017. SPIE, Vol. 10105. 101050J

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Epitaxy
Heterostructures
Molecular beam epitaxy
Heterojunctions
molecular beam epitaxy
2 Citations (Scopus)

Structural evolution of dilute magnetic (Sn,Mn)Se films grown by molecular beam epitaxy

Kanzyuba, V., Dong, S., Liu, X., Li, X., Rouvimov, S., Okuno, H., Mariette, H., Zhang, X., Ptasinska, S., Tracy, B. D., Smith, D., Dobrowolska, M. & Furdyna, J. K., Feb 21 2017, In : Journal of Applied Physics. 121, 7, 075301.

Research output: Contribution to journalArticle

molecular beam epitaxy
halites
ternary systems
x rays
photoelectron spectroscopy
2 Citations (Scopus)

Substrate-independent analysis of microcrystalline silicon thin films using UV Raman spectroscopy

Carpenter, J. V., Bailly, M., Boley, A., Shi, J., Minjares, M., Smith, D., Bowden, S. & Holman, Z., 2017, (Accepted/In press) In : Physica Status Solidi (B) Basic Research.

Research output: Contribution to journalArticle

Microcrystalline silicon
Silicon
Ultraviolet spectroscopy
Raman spectroscopy
crystallinity
8 Citations (Scopus)

Surface preparation of freestanding GaN substrates for homoepitaxial GaN growth by rf-plasma MBE

Storm, D. F., McConkie, T. O., Hardy, M. T., Katzer, D. S., Nepal, N., Meyer, D. J. & Smith, D., Mar 1 2017, In : Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics. 35, 2, 02B109.

Research output: Contribution to journalArticle

Molecular beam epitaxy
molecular beam epitaxy
Impurities
Plasmas
impurities

The scientific careers of Robert Sinclair and Nestor Zaluzec - A brief sketch

Fraser, H. L., Smith, D. & Wittig, J. E., May 1 2017, In : Ultramicroscopy. 176, p. 2-4 3 p.

Research output: Contribution to journalArticle

leading edges
Electron microscopy
electron microscopy
9 Citations (Scopus)

Zintl layer formation during perovskite atomic layer deposition on Ge (001)

Hu, S., Lin, E. L., Hamze, A. K., Posadas, A., Wu, H., Smith, D., Demkov, A. A. & Ekerdt, J. G., Feb 7 2017, In : Journal of Chemical Physics. 146, 5, 052817.

Research output: Contribution to journalArticle

Atomic layer deposition
atomic layer epitaxy
Dimers
Core levels
Binding energy
2016

Anchorage of γ-Al2O3 nanoparticles on nitrogen-doped multiwalled carbon nanotubes

Rodríguez-Pulido, A., Martínez-Gutiérrez, H., Calderon-Polania, G. A., Lozano, M. A. G., Cullen, D. A., Terrones, H., Smith, D. & Terrones, M., Oct 1 2016, In : Scripta Materialia. 123, p. 17-20 4 p.

Research output: Contribution to journalArticle

Multiwalled carbon nanotubes (MWCN)
Nanotubes
Electron microscopy
bundles
Nitrogen
10 Citations (Scopus)

Anti-phase boundaries at the SrTiO3/Si(001) interface studied using aberration-corrected scanning transmission electron microscopy

Wu, H., Aoki, T., Posadas, A. B., Demkov, A. A. & Smith, D., Feb 29 2016, In : Applied Physics Letters. 108, 9, 091605.

Research output: Contribution to journalArticle

antiphase boundaries
aberration
transmission electron microscopy
scanning electron microscopy
image resolution
3 Citations (Scopus)
Aberrations
aberration
Semiconductor materials
Transmission electron microscopy
Imaging techniques
5 Citations (Scopus)

Characterization of electrical properties in axial Si-Ge nanowire heterojunctions using off-axis electron holography and atom-probe tomography

Gan, Z., Perea, D. E., Yoo, J., He, Y., Colby, R. J., Barker, J. E., Gu, M., Mao, S. X., Wang, C., Picraux, S. T., Smith, D. & McCartney, M., Sep 14 2016, In : Journal of Applied Physics. 120, 10, 104301.

Research output: Contribution to journalArticle

holography
heterojunctions
nanowires
tomography
electrical properties
7 Citations (Scopus)

Characterization of structural defects in SnSe2 thin films grown by molecular beam epitaxy on GaAs (111)B substrates

Tracy, B. D., Li, X., Liu, X., Furdyna, J., Dobrowolska, M. & Smith, D., Nov 1 2016, In : Journal of Crystal Growth. 453, p. 58-64 7 p.

Research output: Contribution to journalArticle

Molecular beam epitaxy
molecular beam epitaxy
Fluxes
Epitaxial growth
Thin films
1 Citation (Scopus)

Continuous control of spin polarization using a magnetic field

Gifford, J. A., Zhao, G. J., Li, B. C., Tracy, B. D., Zhang, J., Kim, D. R., Smith, D. & Chen, T., May 23 2016, In : Applied Physics Letters. 108, 21, 212401.

Research output: Contribution to journalArticle

polarization
magnetic fields
electric potential
spectroscopy
3 Citations (Scopus)

Contradictory nature of Co doping in ferroelectric BaTi O3

Ponath, P., O'Hara, A., Cao, H. X., Posadas, A. B., Vasudevan, R., Okatan, M. B., Jesse, S., Berg, M., Li, Z., Zhang, D., Kellock, A. J., De Lozanne, A., Zhou, J., Kalinin, S., Smith, D. & Demkov, A. A., 2016, In : Physical Review B - Condensed Matter and Materials Physics. 94, 20, 205121.

Research output: Contribution to journalArticle

Oxygen vacancies
Ferroelectric materials
Doping (additives)
x ray spectroscopy
oxygen
12 Citations (Scopus)

Critical issues for homoepitaxial GaN growth by molecular beam epitaxy on hydride vapor-phase epitaxy-grown GaN substrates

Storm, D. F., Hardy, M. T., Katzer, D. S., Nepal, N., Downey, B. P., Meyer, D. J., McConkie, T. O., Zhou, L. & Smith, D., Dec 15 2016, In : Journal of Crystal Growth. 456, p. 121-132 12 p.

Research output: Contribution to journalArticle

Vapor phase epitaxy
Molecular beam epitaxy
Hydrides
vapor phase epitaxy
hydrides
16 Citations (Scopus)

Direct mapping of charge distribution during lithiation of Ge nanowires using off-axis electron holography

Gan, Z., Gu, M., Tang, J., Wang, C. Y., He, Y., Wang, K. L., Wang, C., Smith, D. & McCartney, M., Jun 8 2016, In : Nano Letters. 16, 6, p. 3748-3753 6 p.

Research output: Contribution to journalArticle

Electron holography
Charge distribution
holography
charge distribution
Nanowires
1 Citation (Scopus)

Evaluation of AlGaN/GaN high electron mobility transistors grown on ZrTi buffer layers with sapphire substrates

Ren, F., Pearton, S. J., Ahn, S., Lin, Y. H., Machuca, F., Weiss, R., Welsh, A., McCartney, M., Smith, D. & Kravchenko, I. I., Sep 1 2016, In : Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 34, 5, 051208.

Research output: Contribution to journalArticle

Aluminum Oxide
High electron mobility transistors
Buffer layers
high electron mobility transistors
Sapphire
19 Citations (Scopus)

Evaluation of antimony segregation in InAs/InAs1-xSbx type-II superlattices grown by molecular beam epitaxy

Lu, J., Luna, E., Aoki, T., Steenbergen, E. H., Zhang, Y-H. & Smith, D., Mar 7 2016, In : Journal of Applied Physics. 119, 9, 095702.

Research output: Contribution to journalArticle

antimony
superlattices
molecular beam epitaxy
evaluation
profiles
2 Citations (Scopus)

Impact of dynamical scattering on quantitative contrast for aberration-corrected transmission electron microscope images

Wen, C. & Smith, D., Oct 1 2016, In : Micron. 89, p. 77-86 10 p.

Research output: Contribution to journalArticle

Electrons
14 Citations (Scopus)

Impact of severe plastic deformation on microstructure and hydrogen storage of titanium-iron-manganese intermetallics

Edalati, K., Matsuo, M., Emami, H., Itano, S., Alhamidi, A., Staykov, A., Smith, D., Orimo, S. I., Akiba, E. & Horita, Z., Nov 1 2016, In : Scripta Materialia. 124, p. 108-111 4 p.

Research output: Contribution to journalArticle

Hydrogen storage
Manganese
Titanium
plastic deformation
Intermetallics
5 Citations (Scopus)
Molecular beam epitaxy
Nitrides
nitrides
Solar cells
solar cells
11 Citations (Scopus)

Monolithic integration of perovskites on Ge(001) by atomic layer deposition: A case study with SrHfxTi1-xO3

Hu, S., McDaniel, M. D., Posadas, A., Hu, C., Wu, H., Yu, E. T., Smith, D., Demkov, A. A. & Ekerdt, J. G., Sep 1 2016, In : MRS Communications. 6, 3, p. 125-132 8 p.

Research output: Contribution to journalArticle

Atomic layer deposition
Epitaxial layers
Amorphous films
Crystallization
Chemical analysis
1 Citation (Scopus)

Morphological and microstructural stability of N-polar InAlN thin films grown on free-standing GaN substrates by molecular beam epitaxy

Hardy, M. T., McConkie, T. O., Smith, D., Storm, D. F., Downey, B. P., Katzer, D. S., Meyer, D. J. & Nepal, N., Mar 1 2016, In : Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 34, 2, 021512.

Research output: Contribution to journalArticle

Molecular beam epitaxy
Surface morphology
molecular beam epitaxy
Plasmas
Thin films