Dr. Lutz Geelhaar

Droplet bulge effect on the formation of nanowire side facets

@article{ author = { S. Breuer and L.-F. Feiner and L. Geelhaar }, title = { Droplet bulge effect on the formation of nanowire side facets }, journal = { Crystal Growth & Design }, volume = { 13 }, year = { 2013 }, pages = { 2749 } }

TY - JOUR AU - S. Breuer AU - L.-F. Feiner AU - L. Geelhaar TI - Droplet bulge effect on the formation of nanowire side facets JF - Crystal Growth & Design JA - Cryst. Growth Des. J1 - VL - 13 SP - 2749 PY - 2013/01/01

Height self-equilibration during the growth of dense nanowire ensembles: Order emerging from disorder

@article{ author = { K. K. Sabelfeld and V. M. Kaganer and F. Limbach and P. Dogan and O. Brandt and L. Geelhaar and H. Riechert }, title = { Height self-equilibration during the growth of dense nanowire ensembles: Order emerging from disorder }, journal = { Applied Physics Letters }, volume = { 103 }, year = { 2013 }, pages = { 133105 } }

TY - JOUR AU - K. K. Sabelfeld AU - V. M. Kaganer AU - F. Limbach AU - P. Dogan AU - O. Brandt AU - L. Geelhaar AU - H. Riechert TI - Height self-equilibration during the growth of dense nanowire ensembles: Order emerging from disorder JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 103 SP - 133105 PY - 2013/01/01

Mono- and few-layer nanocrystalline graphene grown on Al₂O₃(0001) by molecular beam epitaxy

@article{ author = { M. H. Oliveira Jr. and T. Schumann and R. Gargallo-Caballero and F. Fromm and T. Seyller and M. Ramsteiner and A. Trampert and L. Geelhaar and J. M. J. Lopes and H. Riechert }, title = { Mono- and few-layer nanocrystalline graphene grown on Al₂O₃(0001) by molecular beam epitaxy }, journal = { Carbon }, volume = { 56 }, year = { 2013 }, pages = { 339 } }

TY - JOUR AU - M. H. Oliveira Jr. AU - T. Schumann AU - R. Gargallo-Caballero AU - F. Fromm AU - T. Seyller AU - M. Ramsteiner AU - A. Trampert AU - L. Geelhaar AU - J. M. J. Lopes AU - H. Riechert TI - Mono- and few-layer nanocrystalline graphene grown on Al₂O₃(0001) by molecular beam epitaxy JF - Carbon JA - Carbon J1 - VL - 56 SP - 339 PY - 2013/01/01

Room-temperature electron spin amplifier based on Ga(In)NAs alloys

@article{ author = { Y. Puttisong and I. A. Buyanova and A. J. Ptak and C. W. Tu and L. Geelhaar and H. Riechert and W. M. Chen }, title = { Room-temperature electron spin amplifier based on Ga(In)NAs alloys }, journal = { Advanced Materials }, volume = { 25 }, year = { 2013 }, pages = { 738 } }

TY - JOUR AU - Y. Puttisong AU - I. A. Buyanova AU - A. J. Ptak AU - C. W. Tu AU - L. Geelhaar AU - H. Riechert AU - W. M. Chen TI - Room-temperature electron spin amplifier based on Ga(In)NAs alloys JF - Advanced Materials JA - Adv. Mater. J1 - VL - 25 SP - 738 PY - 2013/01/01

Efficient room-temperature nuclear spin hyperpolarization of a defect atom in a semiconductor

@article{ author = { Y. Puttisong and X. J. Wang and I. A. Buyanova and L. Geelhaar and H. Riechert and A. J. Ptak and C. W. Tu and W. M. Chen }, title = { Efficient room-temperature nuclear spin hyperpolarization of a defect atom in a semiconductor }, journal = { Nature Communications }, volume = { 4 }, year = { 2013 }, pages = { 1751 } }

TY - JOUR AU - Y. Puttisong AU - X. J. Wang AU - I. A. Buyanova AU - L. Geelhaar AU - H. Riechert AU - A. J. Ptak AU - C. W. Tu AU - W. M. Chen TI - Efficient room-temperature nuclear spin hyperpolarization of a defect atom in a semiconductor JF - Nature Communications JA - Nat. Commun. J1 - VL - 4 SP - 1751 PY - 2013/01/01

Strain engineering of nanowire multi-quantum wells demonstrated by Raman spectroscopy

@article{ author = { M. Wölz and M. Ramsteiner and V. M. Kaganer and O. Brandt and L. Geelhaar and H. Riechert }, title = { Strain engineering of nanowire multi-quantum wells demonstrated by Raman spectroscopy }, journal = { Nano Letters }, volume = { 13 }, year = { 2013 }, pages = { 4053 } }

TY - JOUR AU - M. Wölz AU - M. Ramsteiner AU - V. M. Kaganer AU - O. Brandt AU - L. Geelhaar AU - H. Riechert TI - Strain engineering of nanowire multi-quantum wells demonstrated by Raman spectroscopy JF - Nano Letters JA - Nano Lett. J1 - VL - 13 SP - 4053 PY - 2013/01/01

Control over the number density and diameter of GaAs nanowires on Si(111) mediated by droplet epitaxy

@article{ author = { C. Somaschini and S. Bietti and A. Trampert and U. Jahn and C. Hauswald and H. Riechert and S. Sanguinetti and L. Geelhaar }, title = { Control over the number density and diameter of GaAs nanowires on Si(111) mediated by droplet epitaxy }, journal = { Nano Letters }, volume = { 13 }, year = { 2013 }, pages = { 3607 } }

TY - JOUR AU - C. Somaschini AU - S. Bietti AU - A. Trampert AU - U. Jahn AU - C. Hauswald AU - H. Riechert AU - S. Sanguinetti AU - L. Geelhaar TI - Control over the number density and diameter of GaAs nanowires on Si(111) mediated by droplet epitaxy JF - Nano Letters JA - Nano Lett. J1 - VL - 13 SP - 3607 PY - 2013/01/01

Luminous efficiency of axial In_xGa_1-xN/GaN nanowire heterostructures: Interplay of polarization and surface potentials

@article{ author = { O. Marquardt and C. Hauswald and M. Wölz and L. Geelhaar and O. Brandt }, title = { Luminous efficiency of axial In_xGa_1-xN/GaN nanowire heterostructures: Interplay of polarization and surface potentials }, journal = { Nano Letters }, volume = { 13 }, year = { 2013 }, pages = { 3298 } }

TY - JOUR AU - O. Marquardt AU - C. Hauswald AU - M. Wölz AU - L. Geelhaar AU - O. Brandt TI - Luminous efficiency of axial In_xGa_1-xN/GaN nanowire heterostructures: Interplay of polarization and surface potentials JF - Nano Letters JA - Nano Lett. J1 - VL - 13 SP - 3298 PY - 2013/01/01

Self-regulated radius of spontaneously formed GaN nanowires in molecular beam epitaxy

@article{ author = { S. Fernández-Garrido and V. M. Kaganer and K. K. Sabelfeld and T. Gotschke and J. Grandal and E. Calleja and L. Geelhaar and O. Brandt }, title = { Self-regulated radius of spontaneously formed GaN nanowires in molecular beam epitaxy }, journal = { Nano Letters }, volume = { 13 }, year = { 2013 }, pages = { 3274 } }

TY - JOUR AU - S. Fernández-Garrido AU - V. M. Kaganer AU - K. K. Sabelfeld AU - T. Gotschke AU - J. Grandal AU - E. Calleja AU - L. Geelhaar AU - O. Brandt TI - Self-regulated radius of spontaneously formed GaN nanowires in molecular beam epitaxy JF - Nano Letters JA - Nano Lett. J1 - VL - 13 SP - 3274 PY - 2013/01/01

Photoelectrochemical properties of (In,Ga)N nanowires for water splitting investigated by in situ electrochemical mass spectroscopy

@article{ author = { J. Kamimura and P. Bogdanoff and J. Lähnemann and C. Hauswald and L. Geelhaar and S. Fiechter and H. Riechert }, title = { Photoelectrochemical properties of (In,Ga)N nanowires for water splitting investigated by in situ electrochemical mass spectroscopy }, journal = { Journal of the American Chemical Society }, volume = { 135 }, year = { 2013 }, pages = { 10242 } }

TY - JOUR AU - J. Kamimura AU - P. Bogdanoff AU - J. Lähnemann AU - C. Hauswald AU - L. Geelhaar AU - S. Fiechter AU - H. Riechert TI - Photoelectrochemical properties of (In,Ga)N nanowires for water splitting investigated by in situ electrochemical mass spectroscopy JF - Journal of the American Chemical Society JA - J. Am. Chem. Soc. J1 - VL - 135 SP - 10242 PY - 2013/01/01