Prof. Dr. Holger T. Grahn

Coupling of exciton states as the origin of their biexponential decay dynamics in GaN nanowires

@article{ author = { C. Hauswald and T. Flissikowski and T. Gotschke and R. Calarco and L. Geelhaar and H.T. Grahn and O. Brandt }, title = { Coupling of exciton states as the origin of their biexponential decay dynamics in GaN nanowires }, journal = { Physical Review B: Solid State }, volume = { 88 }, year = { 2013 }, pages = { 075312 } }

TY - JOUR AU - C. Hauswald AU - T. Flissikowski AU - T. Gotschke AU - R. Calarco AU - L. Geelhaar AU - H.T. Grahn AU - O. Brandt TI - Coupling of exciton states as the origin of their biexponential decay dynamics in GaN nanowires JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 88 SP - 075312 PY - 2013/01/01

Lateral distributed-feedback gratings for single-mode, high-power terahertz quantum-cascade lasers

@article{ author = { M. Wienold and A. Tahraoui and L. Schrottke and R. Sharma and X. Lü and K. Biermann and R. Hey and H.T. Grahn }, title = { Lateral distributed-feedback gratings for single-mode, high-power terahertz quantum-cascade lasers }, journal = { Optics Express }, volume = { 20 }, year = { 2012 }, pages = { 11207 } }

TY - JOUR AU - M. Wienold AU - A. Tahraoui AU - L. Schrottke AU - R. Sharma AU - X. Lü AU - K. Biermann AU - R. Hey AU - H.T. Grahn TI - Lateral distributed-feedback gratings for single-mode, high-power terahertz quantum-cascade lasers JF - Optics Express JA - Opt. Express J1 - VL - 20 SP - 11207 PY - 2012/01/01

Noise-induced current switching in semiconductor superlattices: Observation of non-exponential kinetics in a high-dimensional system

@article{ author = { Yu. Bomze and R. Hey and H.T. Grahn and S. W. Teitsworth }, title = { Noise-induced current switching in semiconductor superlattices: Observation of non-exponential kinetics in a high-dimensional system }, journal = { Physical Review Letters }, volume = { 109 }, year = { 2012 }, pages = { 026801 } }

TY - JOUR AU - Yu. Bomze AU - R. Hey AU - H.T. Grahn AU - S. W. Teitsworth TI - Noise-induced current switching in semiconductor superlattices: Observation of non-exponential kinetics in a high-dimensional system JF - Physical Review Letters JA - Phys. Rev. Lett. J1 - PRL VL - 109 SP - 026801 PY - 2012/01/01

Optical switching and related structural properties of epitaxial Ge₂Sb₂Te₅ films

@article{ author = { F. Gericke and T. Flissikowski and J. Lähnemann and F. Katmis and W. Braun and H. Riechert and H.T. Grahn }, title = { Optical switching and related structural properties of epitaxial Ge₂Sb₂Te₅ films }, journal = { Journal of Applied Physics }, volume = { 111 }, year = { 2012 }, pages = { 113524 } }

TY - JOUR AU - F. Gericke AU - T. Flissikowski AU - J. Lähnemann AU - F. Katmis AU - W. Braun AU - H. Riechert AU - H.T. Grahn TI - Optical switching and related structural properties of epitaxial Ge₂Sb₂Te₅ films JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 111 SP - 113524 PY - 2012/01/01

Time-resolved photoluminescence spectroscopy of individual GaN nanowires

@article{ author = { A. Gorgis and T. Flissikowski and O. Brandt and C. Chèze and L. Geelhaar and H. Riechert and H.T. Grahn }, title = { Time-resolved photoluminescence spectroscopy of individual GaN nanowires }, journal = { Physical Review B: Solid State }, volume = { 86 }, year = { 2012 }, pages = { 041302(R) } }

TY - JOUR AU - A. Gorgis AU - T. Flissikowski AU - O. Brandt AU - C. Chèze AU - L. Geelhaar AU - H. Riechert AU - H.T. Grahn TI - Time-resolved photoluminescence spectroscopy of individual GaN nanowires JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 86 SP - 041302(R) PY - 2012/01/01

Terahertz wavefront measurement with a Hartmann sensor

@article{ author = { H. Richter and M. Greiner-Bär and N. Deßmann and J. Pfund and M. Wienold and L. Schrottke and R. Hey and H.T. Grahn and H.-W. Hübers }, title = { Terahertz wavefront measurement with a Hartmann sensor }, journal = { Applied Physics Letters }, volume = { 101 }, year = { 2012 }, pages = { 031103 } }

TY - JOUR AU - H. Richter AU - M. Greiner-Bär AU - N. Deßmann AU - J. Pfund AU - M. Wienold AU - L. Schrottke AU - R. Hey AU - H.T. Grahn AU - H.-W. Hübers TI - Terahertz wavefront measurement with a Hartmann sensor JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 101 SP - 031103 PY - 2012/01/01

Formation of a monocrystalline, M-plane AlN layer by the nitridation of γ-LiAlO₂(100)

@article{ author = { K. R. Wang and C. Mauder and Q. Wan and B. Jenichen and J. F. Woitok and H.T. Grahn and H. Kalisch and M. Heuken and A. Vescan and A. Trampert }, title = { Formation of a monocrystalline, M-plane AlN layer by the nitridation of <span class="math"><em>γ</em></span>-LiAlO₂(100) }, journal = { Applied Physics Express }, volume = { 5 }, year = { 2012 }, pages = { 105501 } }

TY - JOUR AU - K. R. Wang AU - C. Mauder AU - Q. Wan AU - B. Jenichen AU - J. F. Woitok AU - H.T. Grahn AU - H. Kalisch AU - M. Heuken AU - A. Vescan AU - A. Trampert TI - Formation of a monocrystalline, M-plane AlN layer by the nitridation of <span class="math"><em>γ</em></span>-LiAlO₂(100) JF - Applied Physics Express JA - Appl. Phys. Express J1 - VL - 5 SP - 105501 PY - 2012/01/01

Coexistence of quantum-confined Stark effect and localized states in an (In,Ga)N/GaN nanowire heterostructure

@article{ author = { J. Lähnemann and O. Brandt and C. Pfüller and T. Flissikowski and U. Jahn and E. Luna and M. Hanke and M. Knelangen and A. Trampert and H.T. Grahn }, title = { Coexistence of quantum-confined Stark effect and localized states in an (In,Ga)N/GaN nanowire heterostructure }, journal = { Physical Review B: Solid State }, volume = { 84 }, year = { 2011 }, pages = { 155303 } }

TY - JOUR AU - J. Lähnemann AU - O. Brandt AU - C. Pfüller AU - T. Flissikowski AU - U. Jahn AU - E. Luna AU - M. Hanke AU - M. Knelangen AU - A. Trampert AU - H.T. Grahn TI - Coexistence of quantum-confined Stark effect and localized states in an (In,Ga)N/GaN nanowire heterostructure JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 84 SP - 155303 PY - 2011/10/11

Enhanced emission efficiency due to an excited subband resonance in a GaAs-based quantum-well system

@article{ author = { K. Fujiwara and U. Jahn and E. Luna and H.T. Grahn }, title = { Enhanced emission efficiency due to an excited subband resonance in a GaAs-based quantum-well system }, journal = { Journal of Crystal Growth }, volume = { 323 }, year = { 2011 }, pages = { 45 } }

TY - JOUR AU - K. Fujiwara AU - U. Jahn AU - E. Luna AU - H.T. Grahn TI - Enhanced emission efficiency due to an excited subband resonance in a GaAs-based quantum-well system JF - Journal of Crystal Growth JA - J. Cryst. Growth J1 - JGC VL - 323 SP - 45 PY - 2011/01/01

Suitability of Au- and self-assisted GaAs nanowires for optoelectronic applications

@article{ author = { S. Breuer and C. Pfüller and T. Flissikowski and O. Brandt and H.T. Grahn and L. Geelhaar and H. Riechert }, title = { Suitability of Au- and self-assisted GaAs nanowires for optoelectronic applications }, journal = { Nano Letters }, volume = { 11 }, year = { 2011 }, pages = { 1276 } }

TY - JOUR AU - S. Breuer AU - C. Pfüller AU - T. Flissikowski AU - O. Brandt AU - H.T. Grahn AU - L. Geelhaar AU - H. Riechert TI - Suitability of Au- and self-assisted GaAs nanowires for optoelectronic applications JF - Nano Letters JA - Nano Lett. J1 - VL - 11 SP - 1276 PY - 2011/01/01