Dr. Lutz Geelhaar

Minimizing the influence of surface potentials in axial (In,Ga)N/GaN nanowire heterostructures by reducing their diameter

@article{ author = { O. Marquardt and L. Geelhaar and O. Brandt }, title = { Minimizing the influence of surface potentials in axial (In,Ga)N/GaN nanowire heterostructures by reducing their diameter }, journal = { IEEE }, volume = { IEEE Catalog Nr. CFP14817-PRT }, year = { 2014 }, pages = { 15 } }

TY - JOUR AU - O. Marquardt AU - L. Geelhaar AU - O. Brandt TI - Minimizing the influence of surface potentials in axial (In,Ga)N/GaN nanowire heterostructures by reducing their diameter JF - IEEE JA - IEEE J1 - VL - IEEE Catalog Nr. CFP14817-PRT SP - 15 PY - 2014/09/01

Understanding peculiarities in the optoelectronic characteristics of light emitting diodes based on (In,Ga)N/GaN nanowires

@article{ author = { M. Musolino and A. Tahraoui and F. Limbach and J. Lähnemann and U. Jahn and O. Brandt and L. Geelhaar and H. Riechert }, title = { Understanding peculiarities in the optoelectronic characteristics of light emitting diodes based on (In,Ga)N/GaN nanowires }, journal = { Applied Physics Letters }, volume = { 105 }, year = { 2014 }, pages = { 083505 } }

TY - JOUR AU - M. Musolino AU - A. Tahraoui AU - F. Limbach AU - J. Lähnemann AU - U. Jahn AU - O. Brandt AU - L. Geelhaar AU - H. Riechert TI - Understanding peculiarities in the optoelectronic characteristics of light emitting diodes based on (In,Ga)N/GaN nanowires JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 105 SP - 083505 PY - 2014/08/26

Coaxial multi-shell (In,Ga)As/GaAs nanowires for near-infrared emission on Si substrates

@article{ author = { E. Dimakis and U. Jahn and M. Ramsteiner and A. Tahraoui and J. Grandal and X. Kong and O. Marquardt and A. Trampert and H. Riechert and L. Geelhaar }, title = { Coaxial multi-shell (In,Ga)As/GaAs nanowires for near-infrared emission on Si substrates }, journal = { Nano Letters }, volume = { 14 }, year = { 2014 }, pages = { 2604 } }

TY - JOUR AU - E. Dimakis AU - U. Jahn AU - M. Ramsteiner AU - A. Tahraoui AU - J. Grandal AU - X. Kong AU - O. Marquardt AU - A. Trampert AU - H. Riechert AU - L. Geelhaar TI - Coaxial multi-shell (In,Ga)As/GaAs nanowires for near-infrared emission on Si substrates JF - Nano Letters JA - Nano Lett. J1 - VL - 14 SP - 2604 PY - 2014/05/14

Radiative and nonradiative decay of excitons in GaN nanowires

@article{ author = { C. Hauswald and T. Flissikowski and L. Geelhaar and H. T. Grahn and H. Riechert and O. Brandt }, title = { Radiative and nonradiative decay of excitons in GaN nanowires }, journal = { Proceedings of SPIE }, volume = { 8986 }, year = { 2014 }, pages = { 89860V } }

TY - JOUR AU - C. Hauswald AU - T. Flissikowski AU - L. Geelhaar AU - H. T. Grahn AU - H. Riechert AU - O. Brandt TI - Radiative and nonradiative decay of excitons in GaN nanowires JF - Proceedings of SPIE JA - Proc. SPIE J1 - VL - 8986 SP - 89860V PY - 2014/03/08

High-frequency acoustic charge transport in GaAs nanowires

@article{ author = { S. Büyükköse and A. Hernández-Mínguez and B. Vratzov and C. Somaschini and L. Geelhaar and H. Riechert and W. G. van der Wiel and P. V. Santos }, title = { High-frequency acoustic charge transport in GaAs nanowires }, journal = { Nanotechnology }, volume = { 25 }, year = { 2014 }, pages = { 135204 } }

TY - JOUR AU - S. Büyükköse AU - A. Hernández-Mínguez AU - B. Vratzov AU - C. Somaschini AU - L. Geelhaar AU - H. Riechert AU - W. G. van der Wiel AU - P. V. Santos TI - High-frequency acoustic charge transport in GaAs nanowires JF - Nanotechnology JA - Nanotechnol. J1 - NAN VL - 25 SP - 135204 PY - 2014/03/04

Type-II band alignment of zinc-blende and wurtzite segments in GaAs nanowires: A combined photoluminescence and resonant Raman scattering study

@article{ author = { P. Kusch and E. Grelich and C. Somaschini and E. Luna and M. Ramsteiner and L. Geelhaar and H. Riechert and S. Reich }, title = { Type-II band alignment of zinc-blende and wurtzite segments in GaAs nanowires: A combined photoluminescence and resonant Raman scattering study }, journal = { Physical Review B: Solid State }, volume = { 89 }, year = { 2014 }, pages = { 045310 } }

TY - JOUR AU - P. Kusch AU - E. Grelich AU - C. Somaschini AU - E. Luna AU - M. Ramsteiner AU - L. Geelhaar AU - H. Riechert AU - S. Reich TI - Type-II band alignment of zinc-blende and wurtzite segments in GaAs nanowires: A combined photoluminescence and resonant Raman scattering study JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 89 SP - 045310 PY - 2014/01/27

GaN-based radial heterostructure nanowires grown by MBE and ALD

@article{ author = { L. Lari and I. M. Ross and T. Walther and K. Black and C. Chèze and L. Geelhaar and H. Riechert and P. R. Chalker }, title = { GaN-based radial heterostructure nanowires grown by MBE and ALD }, journal = { Journal of Physics: Conference Series }, volume = { 471 }, year = { 2013 }, pages = { 012039 } }

TY - JOUR AU - L. Lari AU - I. M. Ross AU - T. Walther AU - K. Black AU - C. Chèze AU - L. Geelhaar AU - H. Riechert AU - P. R. Chalker TI - GaN-based radial heterostructure nanowires grown by MBE and ALD JF - Journal of Physics: Conference Series JA - J. Phys.: Conf. Ser. J1 - VL - 471 SP - 012039 PY - 2013/12/05

GaAs-Fe_3Si Core-Shell Nanowires: Nanobar Magnets

@article{ author = { M. Hilse and J. Herfort and B. Jenichen and A. Trampert and M. Hanke and P. Schaaf and L. Geelhaar and H. Riechert }, title = { GaAs-Fe_3Si Core-Shell Nanowires: Nanobar Magnets }, journal = { Nano Letters }, volume = { 13 }, year = { 2013 }, pages = { 6203 } }

TY - JOUR AU - M. Hilse AU - J. Herfort AU - B. Jenichen AU - A. Trampert AU - M. Hanke AU - P. Schaaf AU - L. Geelhaar AU - H. Riechert TI - GaAs-Fe_3Si Core-Shell Nanowires: Nanobar Magnets JF - Nano Letters JA - Nano Lett. J1 - VL - 13 SP - 6203 PY - 2013/11/25

In situ doping of catalyst-free InAs nanowires with Si: Growth, polytypism, and local vibrational modes of Si

@article{ author = { E. Dimakis and M. Ramsteiner and C.-N. Huang and A. Trampert and A. Davydok and A. Biermanns and U. Pietsch and H. Riechert and L. Geelhaar }, title = { In situ doping of catalyst-free InAs nanowires with Si: Growth, polytypism, and local vibrational modes of Si }, journal = { Applied Physics Letters }, volume = { 103 }, year = { 2013 }, pages = { 143121 } }

TY - JOUR AU - E. Dimakis AU - M. Ramsteiner AU - C.-N. Huang AU - A. Trampert AU - A. Davydok AU - A. Biermanns AU - U. Pietsch AU - H. Riechert AU - L. Geelhaar TI - In situ doping of catalyst-free InAs nanowires with Si: Growth, polytypism, and local vibrational modes of Si JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 103 SP - 143121 PY - 2013/10/03

Distribution of zinc-blende twins and wurtzite segments in GaAs nanowires probed by X-ray nanodiffraction

@article{ author = { A. Biermanns and D. Carbone and S. Breuer and V. L. R. Jacques and T. Schulli and L. Geelhaar and U. Pietsch }, title = { Distribution of zinc-blende twins and wurtzite segments in GaAs nanowires probed by X-ray nanodiffraction }, journal = { Physica Status Solidi Rapid Research Letters }, volume = { 7 }, year = { 2013 }, pages = { 860 } }

TY - JOUR AU - A. Biermanns AU - D. Carbone AU - S. Breuer AU - V. L. R. Jacques AU - T. Schulli AU - L. Geelhaar AU - U. Pietsch TI - Distribution of zinc-blende twins and wurtzite segments in GaAs nanowires probed by X-ray nanodiffraction JF - Physica Status Solidi Rapid Research Letters JA - Phys. Status Solidi RRL J1 - VL - 7 SP - 860 PY - 2013/07/04