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2019

60Co gamma ray damage in homoepitaxial β-Ga2O3 Schottky rectifiers

Yang, J., Koller, G. J., Fares, C., Ren, F., Pearton, S. J., Bae, J., Kim, J. & Smith, D., Jan 1 2019, In : ECS Journal of Solid State Science and Technology. 8, 7, p. Q3041-Q3045

Research output: Contribution to journalArticle

Open Access
Gamma rays
Irradiation
Alpha particles
Gate dielectrics
MOSFET devices
5 Citations (Scopus)

Damage recovery and dopant diffusion in Si and Sn ion implanted β-Ga2O3

Tadjer, M. J., Fares, C., Mahadik, N. A., Freitas, J. A., Smith, D., Sharma, R., Law, M. E., Ren, F., Pearton, S. J. & Kuramata, A., Jan 1 2019, In : ECS Journal of Solid State Science and Technology. 8, 7, p. Q3133-Q3139

Research output: Contribution to journalArticle

Open Access
Doping (additives)
Annealing
Ions
Recovery
Lattice constants

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
3 Citations (Scopus)

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
1 Citation (Scopus)

Electron holography

Dunin-Borkowski, R. E., Kovács, A., Kasama, T., McCartney, M. R. & Smith, D. J., Jan 1 2019, Springer Handbooks. Springer, p. 767-818 52 p. (Springer Handbooks).

Research output: Chapter in Book/Report/Conference proceedingChapter

holography
electrons
phase shift
electric fields
magnetic domains

Epitaxial Oxides on Glass: A Platform for Integrated Oxide Devices

Ortmann, J. E., McCartney, M. R., Posadas, A., Smith, D. & Demkov, A. A., Jan 1 2019, (Accepted/In press) In : ACS Applied Nano Materials.

Research output: Contribution to journalArticle

Open Access
Silicon
Oxides
Transition metals
Glass
Crystalline materials

Growth habits of bismuth selenide (bi2se3) layers and nanowires over stranski-krastanov indium arsenide quantum dots

Claro, M. S., Levy, I., Garcia, T. A., Gangopadhyay, A., Smith, D. J. & Tamargo, M. C., Dec 4 2019, In : Crystal Growth and Design. 19, 12, p. 6989-6993 5 p.

Research output: Contribution to journalArticle

Indium arsenide
Bismuth
selenides
habits
bismuth

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. J. & 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
1 Citation (Scopus)
Electron holography
holography
Electrostatics
electrostatics
Charge density
3 Citations (Scopus)

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
1 Citation (Scopus)

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
3 Citations (Scopus)

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

Strategies for Analyzing Noncommon-Atom Heterovalent Interfaces: The Case of CdTe-on-InSb

Luna, E., Trampert, A., Lu, J., Aoki, T., Zhang, Y. H., McCartney, M. R. & Smith, D. J., Jan 1 2019, (Accepted/In press) In : Advanced Materials Interfaces. 1901658.

Research output: Contribution to journalArticle

Open Access
Electron microscopy
Imaging techniques
Atoms
Electron energy loss spectroscopy
Photodetectors
5 Citations (Scopus)

Switching behavior and forward bias degradation of 700V, 0.2a, β-Ga2O3 vertical geometry rectifiers

Yang, J., Fares, C., Ren, F., Chen, Y. T., Liao, Y. T., Chang, C. W., Lin, J., Tadjer, M., Smith, D., Pearton, S. J. & Kuramata, A., Jan 1 2019, In : ECS Journal of Solid State Science and Technology. 8, 7, p. Q3028-Q3033

Research output: Contribution to journalArticle

Open Access
Recovery
Degradation
Geometry
Epitaxial layers
Delamination
2017
44 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
5 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
4 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
10 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
10 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
8 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
9 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
10 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
4 Citations (Scopus)
Aberrations
aberration
Semiconductor materials
Transmission electron microscopy
Imaging techniques
6 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
13 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
18 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
24 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
18 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
12 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
2 Citations (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
2 Citations (Scopus)
Aberrations
aberration
Semiconductor materials
Transmission electron microscopy
Dislocations (crystals)
4 Citations (Scopus)

Recent studies of oxide-semiconductor heterostructures using aberration-corrected scanning transmission electron microscopy

Smith, D., Wu, H. W., Lu, S., Aoki, T., Ponath, P., Fredrickson, K., McDaniel, M. D., Lin, E., Posadas, A. B., Demkov, A. A., Ekerdt, J. & McCartney, M., Aug 1 2016, (Accepted/In press) In : Journal of Materials Research. p. 1-9 9 p.

Research output: Contribution to journalArticle

Aberrations
Oxides
Heterojunctions
aberration
Transmission electron microscopy

Recovery in dc performance of off-state step-stressed AlGaN/GaN high electron mobility transistor with thermal annealing

Kim, B. J., Ahn, S., Kang, T. S., Zhu, J., Ren, F., Pearton, S. J. & Smith, D., 2016, CS MANTECH 2016 - International Conference on Compound Semiconductor Manufacturing Technology. CS Mantech, p. 271-273 3 p.

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

High electron mobility transistors
Drain current
Annealing
Recovery
Degradation
4 Citations (Scopus)

Spectral identification scheme for epitaxially grown single-phase niobium dioxide

Hadamek, T., Posadas, A. B., Dhamdhere, A., Smith, D. & Demkov, A. A., Mar 7 2016, In : Journal of Applied Physics. 119, 9, 095308.

Research output: Contribution to journalArticle

dioxides
niobium
niobium oxides
strontium
metals
5 Citations (Scopus)

Spectrum and phase mapping across the epitaxial γ-Al2O3/SrTiO3 interface

Lu, S., Kormondy, K. J., Ngo, T. Q., Aoki, T., Posadas, A., Ekerdt, J. G., Demkov, A. A., McCartney, M. & Smith, D., Feb 1 2016, In : Applied Physics Letters. 108, 5, 051606.

Research output: Contribution to journalArticle

atomic layer epitaxy
holography
oxidation
electron gas
aberration