Publications & Proceedings

2009

R. Farshchi, D.A. Hwang, N. Misra, C.C. Julaton III, K.M. Yu, C.P. Grigoropoulos, and O.D. Dubon
Structural, magnetic, and transport properties of laser-annealed GaAs:Mn-H
J. Appl. Phys. 106, 013904 (2009)

2008

M.A. Scarpulla, R. Farshchi, P.R. Stone, R.V. Chopdekar, K.M. Yu, Y. Suzuki, and O.D. Dubon
Electrical transport and ferromagnetism in Ga1-xMnxAs synthesized by ion implantation and pulsed-laser melting
J. Appl. Phys. 103, 073913 (2008)
M.A. Scarpulla, P.R. Stone, I.D. Sharp, E.E. Haller, O.D. Dubon, J.W. Beeman, and K.M. Yu
Nonmagnetic compensation in ferromagnetic Ga1-xMnxAs and Ga1-xMnxP synthesized by ion implantation and pulsed-laser melting
J. Appl. Phys. 103, 123906 (2008)
K. Alberi, K.M. Yu, P.R. Stone, O.D. Dubon, W. Walukiewicz, T. Wojtowicz, X. Liu, and J. Furdyna
Formation of Mn-derived impurity band in III-Mn-V alloys by valence band anticrossing
Phys. Rev. B 78, 075201 (2008)
P.R. Stone, K. Alberi, S.K.Z. Tardif, J.W. Beeman, K.M. Yu, W. Walukiewicz, and O.D. Dubon
Metal-Insulator Transition by Isovalent Anion Substitution in Ga1-xMnxAs: Implications to Ferromagnetism
Phys. Rev. Lett. 101, 087203 (2008)
P.R. Stone, C. Bihler, M. Kraus, M.A. Scarpulla, J.W. Beeman, K.M. Yu, M.S. Brandt, and O.D. Dubon
Compensation-dependent in-plane magnetization reversal processes in Ga1-xMnxP1-ySy
Phys. Rev. B 78, 214421 (2008)
K. Alberi, J. Blacksberg, L.D. Bell, S. Nikzad, K.M. Yu, O.D. Dubon, and W. Walukiewicz
Anticrossing in Highly Mismatched SnxGe1-x Semiconducting Alloys
Phys. Rev. B 77, 073202 (2008)
J.T. Robinson and O.D. Dubon
Ge Island Assembly on Metal-Patterned Si: Truncated Pyramids, Nanorods, and Beyond
J. Nanoscience and Nanotechnology 8, 56 (2008)
R. Farshchi, O.D. Dubon, D.J. Hwang, N. Misra, C.P. Grigoropoulos, and P.D. Ashby
Laser activation of ferromagnetism in hydrogenated Ga1-xMnxAs
Appl. Phys. Lett. 92, 012517 (2008)

2007

P.R. Stone, J.W. Beeman, K.M. Yu, and O.D. Dubon
Tuning of ferromagnetism through anion substitution in Ga-Mn-pnictide ferromagnetic semiconductors
Physica B 401, 454 (2007)
R. Farshchi, P. D. Ashby, D.J. Hwang, C.P. Grigoropoulos, R.V. Chopdekar, Y. Suzuki, and O.D. Dubon
Hydrogen patterning of Ga1-xMnxAs for planar spintronics
Physica B 401, 447 (2007)
J.T. Robinson, F. Ratto, O. Moutanabbir, S. Heun, A. Locatelli, T.O. Mentes, L. Aballe, and O.D. Dubon
Gold-catalyzed oxide nanopatterns for the directed assembly of Ge island arrays on Si
Nano Letters 7, 2655 (2007)
J.T. Robinson, J.A. Liddle, P.G. Evans, and O.D. Dubon
Chemical Nanomachining of Si by Au-catalyzed oxidation
Nano Letters 7, 2009 (2007)
C. Bihler, M. Kraus, H. Huebl, M.S. Brandt, S.T.B. Goennenwein, M. Opel, M.A. Scarpulla, P.R. Stone, R. Farshchi, and O.D. Dubon
Magnetocrystalline anisotropy and magnetization reversal in Ga1-xMnxP synthesized by ion implantation and pulsed-laser melting
Phys. Rev. B 75, 214419 (2007)
M.-H. Kim, G. Acbas, M.-H. Yang, I. Ohkubo, H. Christen, D. Mandrus, M.A. Scarpulla, O.D. Dubon, Z. Schlesinger, P. Khalifah, and J. Cerne
Determination of infrared complex magneto-conductivity tensor from Faraday and Kerr measurements
Phys. Rev. B 75, 214416 (2007)
K. Alberi, O.D. Dubon, W. Walukiewicz, K.M. Yu, K. Bertulis, and A. Krotkus
Valence band anticrossing in GaBixAs1-x alloys
Appl. Phys. Lett. 75, 051909 (2007)
K. Alberi, J. Wu, W. Walukiewicz, K.M. Yu, O.D. Dubon, S.P. Watkins, C.X. Wang, X. Liu, Y.-J. Cho, and J.K. Furdyna
Valence-band anticrossing in mismatched III-V semiconductor alloys
Phys. Rev. B 75, 045203 (2007)
J.T. Robinson, D.A. Walko, D.A. Arms, D.S. Tinberg, P.G. Evans, Y. Cao, J.A. Liddle, A. Rastelli, O.G. Schmidt, and O.D. Dubon
Sculpting semiconductor heteroepitaxial islands: from dots to rods
Phys. Rev. Lett. 98, 106102 (2007)
R. Farshchi, R.V. Chopdekar, Y. Suzuki, P.D. Ashby, I.D. Sharp, J.W. Beeman, E.E. Haller, and O.D. Dubon
2D-patterned ferromagnetic III-Mn-V semiconductors for planar spintronics
Phys. Status Solidi C 4, 1755 (2007)
K. Alberi, J. Wu, W. Walukiewicz, K.M. Yu, O.D. Dubon, S.P. Watkins, C.X. Wang, X. Liu, Y.-J. Cho, and J.K. Furdyna
Valence band anticrossing in mismatched III-V semiconductor alloys
Phys. Status Solidi C 4, 1711 (2007)

2006

O.D. Dubon, J.T. Robinson, and K.M. Itoh
Metallization and oxidation templating of surfaces for directed island assembly
Springer Series on Nanoscience & Technology: Lateral Alignment of Epitaxial Quantum Dots 4, Eds. O.G. Schmidt, P. Avouris, K.v. Klitzing, H. Sakaki, and R. Wiesendanger, in press (2006).
P.R. Stone, M.A. Scarpulla, R. Farshchi, I.D. Sharp, E.E. Haller, O. D. Dubon, K.M. Yu J.W. Beeman, E. Arenholz, J.D. Denlinger, and H. Ohldag
Mn L3,2 X-ray absorption and magnetic circular dichroism in ferromagnetic Ga1-xMnxP
Appl. Phys. Lett. 89, 012504 (2006)
P.R. Stone, M.A. Scarpulla, R. Farshchi, I.D. Sharp, J.W. Beeman, K.M. Yu, E. Arenholz, J. Denlinger, E.E. Haller, and O.D. Dubon
Mn L3,2 X-ray absorption spectroscopy and magnetic circular dichroism in ferromagnetic
Ga1-xMnxP
AIP Conf. Proc. 893, 1177 (2007)
Y.J. Cho, M.A. Scarpulla, X. Liu, Y.Y. Zhou, O.D. Dubon, and J.K. Furdyna
Magnetic cluster phases of Mn-interstitial-free (Ga,Mn)As
AIP Conf. Proc. 893, 1221 (2007)
O.D. Dubon, J.T. Robinson, Y. Cao, and J.A. Liddle
Programming the Shape of Highly Ordered Ge Islands on Si: from Dots to Rods
AIP Conf. Proc. 893, 37 (2007)
J.T. Robinson, J.A. Liddle, A. Minor, V. Radmilovic, and O.D. Dubon
Morphological evolution of Ge islands on Au-patterned Si
J. Cryst. Growth 287, 518 (2006)
J.T. Robinson, Y. Cao, D. Walko, D. Arms, J.A. Liddle, and O.D. Dubon
Ordering and shape tuning of Ge islands on metal-patterned Si
Mat. Res. Soc. Symp. Proc. 958, L03-07 (2007)
I.D. Sharp, Q. Xu, D.O. Yi, C.Y. Liao, J.W. Ager III, J.W. Beeman, K.M. Yu, J.T. Robinson, O.D. Dubon, D.C. Chrzan, and E.E. Haller
A Chemical Approach to 3-D Lithographic Patterning of Si and Ge Nanocrystals
Mat. Res. Soc. Symp. Proc. 901, Rb09-03 (2006)
R. Farshchi, M.A. Scarpulla, P.R. Stone, K.M. Yu, I.D. Sharp, J.W. Beeman, H.H. Silvestri, L.A. Reichertz, E.E. Haller, and O.D. Dubon
Compositional tuning of ferromagnetism in Ga1-xMnxP
Solid State Commun. 140, 443 (2006)
O.D. Dubon, M.A. Scarpulla, R. Farshchi, and K.M. Yu
Doping and defect control of ferromagnetic semiconductors formed by ion implantation and pulsed-laser melting
Physica B 376, 630 (2006)

2005

O.D. Dubon and M.A. Scarpulla, K.M. Yu and W. Walukiewicz
Diluted semiconductors formed from energetic beams
IOP Conference Series 184, 399 (2005)
J.T. Robinson, J.A. Liddle, A. Minor,, V. Radmilovic,, D.O. Yi, P. Alex Greaney, K.N. Long, D.C. Chrzan, and, O.D. Dubon
Metal-Induced Assembly of a Semiconductor Island Lattice: Ge Truncated Pyramids on
Au-Patterned Si
Nano Letters 5, 2070 (2005)
M.A. Scarpulla, B.L. Cardozo, R. Farshchi, W.M. Hlaing Oo, M.D. McCluskey, K.M. Yu, and O.D. Dubon
Ferromagnetism in Ga1-xMnxP: Evidence for inter-Mn exchange mediated by localized holes within a detached impurity band
Phys. Rev. Lett. 95, 207204 (2005)
K.M. Yu, W. Walukiewicz, T. Wojtowicz, J. Denlinger, M.A. Scarpulla, X. Liu, and J.K. Furdyna
Effect of film thickness on the incorporation of Mn interstitials in Ga1-xMnxAs
Appl. Phys. Lett. 86, 042102 (2005)
J.T. Robinson, J.A. Liddle, A. Minor, V. Radmilovic, and O.D. Dubon
Directed assembly of Ge islands grown on Au-patterned Si(100)
AIP Conf. Proc 772, 609 (2005)
K. Alberi, A. Minor, M.A. Scarpulla, S. J. Chung, D.E. Mars, K.M. Yu, W. Walukiewicz, and O. D. Dubon,
Fabrication of GaNxAs1-x Quantum Structures by Focused Ion Beam Patterning
AIP Conf. Proc 772, 223 (2005)
M.A. Scarpulla, K.M. Yu, W. Walukiewicz, and O.D. Dubon
Carrier Concentration Dependencies of Magnetization Transport in Ga1-xMnxAs1-yTey
AIP Conf. Proc 772, 1367 (2005)

2004

K.M. Yu, W. Walukiewicz, M.A. Scarpulla, O.D. Dubon, W. Shan, J. Wu, J.W. Beeman, and P. Becla
Synthesis and properties of highly mismatched II-O-VI alloys
IEE Proc.-Optoelectronics 151, 452 (2004)
K.M. Yu, W. Walukiewicz, W. Shan, J. Wu, J.W. Beeman, M.A. Scarpulla, O.D. Dubon, and P. Becla
Synthesis and properties of highly mismatched II-O-VI alloys
J. Appl. Phys. 95, 6232 (2004)
K.M. Yu, W. Walukiewicz, J. Wu, W. Shan, M.A. Scarpulla, O.D. Dubon, J.W. Beeman, and P. Becla
Diluted ZnMnTe oxide: a multi-band semiconductor for high efficiency solar cells
Phys. Status Solidi B 241, 660 (2004)
W. Shan, K.M. Yu, W. Walukiewicz, J.W. Beeman, J. Wu, J.W. Ager III, M.A. Scarpulla, O.D. Dubon, and E.E. Haller
Effects of pressure on the band structure of highly mismatched Zn1-yMnyOxTe1-x alloys
Appl. Phys. Lett. 84, 924 (2004)

2003

K.M. Yu, J. Wu, W. Walukiewicz, W. Shan, J.W. Beeman, D.E. Mars, D.R. Chamberlin, M.A. Scarpulla, O.D. Dubon, M.C. Ridgway, and J.F. Geisz
Mutual passivation of group IV donors and isovalent nitrogen in diluted GaNxAs1-x alloys
Physica B 340, 389 (2003)
M.A. Scarpulla, U. Daud, K.M. Yu, O. Monteiro, Z. Liliental-Weber, D. Zakharov, W. Walukiewicz, and O.D. Dubon
Diluted magnetic semiconductors formed by ion implantation and pulsed-laser melting
Physica B 340, 908 (2003)
K.M. Yu, W. Walukiewicz, J. Wu, W. Shan, J.W. Beeman, M.A. Scarpulla, O.D. Dubon, and P. Becla
Diluted II-VI Oxide Semiconductors with Multiple Band Gaps
Phys. Rev. Lett. 91, 246403 (2003)
K.M. Yu, W. Walukiewicz, J. Wu, W. Shan, J.W. Beeman, M.A. Scarpulla, O.D. Dubon, M.C. Ridgway, D.E. Mars, and D.R. Chamberlin
Mutual passivation of group IV donors and nitrogen in diluted GaNxAs1-x alloys
Appl. Phys. Lett. 83, 2844 (2004)
K.M. Yu, W. Walukiewicz, M.A. Scarpulla, O.D. Dubon, J. Wu, J. Jasinski, Z. Liliental-Weber, J.W. Beeman, M.R. Pillai, and M.J. Aziz
Synthesis of GaNxAs1-x thin films by pulsed laser melting and rapid thermal annealing of
N+-implanted GaAs
J. Appl. Phys. 94, 1043 (2003)
M.A. Scarpulla, O.D. Dubon, K.M. Yu, O. Monteiro, M.R. Pillai, M.J. Aziz, and M.C. Ridgway
Ferromagnetic Ga1-xMnxAs produced by ion implantation and pulsed-laser melting
Appl. Phys. Lett. 82, 1251 (2003)

2002

K.M. Yu, W. Walukiewicz, J. Wu, D.E. Mars, D.R. Chamberlin, M.A. Scarpulla1, O.D. Dubon, and J.F. Geisz
Mutual passivation of electrically active and isovalent impurities
Nature Mater. 1, 185 (2002)
K.M. Yu, W. Walukiewicz, J.W. Beeman, M.A. Scarpulla, O.D. Dubon, M.R. Pillai, and M.J. Aziz
Enhanced nitrogen incorporation by pulsed laser annealing of GaNxAs1-x formed by N ion implantation
Appl. Phys. Lett. 80, 3958 (2002)