Nitride semiconductors free of electrostatic fields for efficient white light-emitting diodes P Waltereit, O Brandt, A Trampert, HT Grahn, J Menniger, M Ramsteiner, ...
Nature 406 (6798), 865-868, 2000
1957 2000 Surface generation and detection of phonons by picosecond light pulses C Thomsen, HT Grahn, HJ Maris, J Tauc
Physical Review B 34 (6), 4129, 1986
1633 1986 Electronic band structure of wurtzite GaN under biaxial strain in the M plane investigated with photoreflectance spectroscopy S Ghosh, P Waltereit, O Brandt, HT Grahn, KH Ploog
Physical Review B 65 (7), 075202, 2002
291 2002 Picosecond ultrasonics HT Grahn, HJ Maris, J Tauc
IEEE Journal of Quantum Electronics 25 (12), 2562-2569, 1989
284 1989 Non-linear dynamics of semiconductor superlattices LL Bonilla, HT Grahn
Reports on Progress in Physics 68 (3), 577, 2005
246 2005 Electrical spin injection from ferromagnetic MnAs metal layers into GaAs M Ramsteiner, HY Hao, A Kawaharazuka, HJ Zhu, M Kästner, R Hey, ...
Physical Review B 66 (8), 081304, 2002
217 2002 Introduction to semiconductor physics HT Grahn
World Scientific Publishing Company, 1999
216 1999 Suitability of Au-and self-assisted GaAs nanowires for optoelectronic applications S Breuer, C Pfuller, T Flissikowski, O Brandt, HT Grahn, L Geelhaar, ...
Nano letters 11 (3), 1276-1279, 2011
208 2011 Electric-field domains in semiconductor superlattices: a novel system for tunneling between 2D systems HT Grahn, RJ Haug, W Müller, K Ploog
Physical review letters 67 (12), 1618, 1991
192 1991 Electrical transport in narrow-miniband semiconductor superlattices HT Grahn, K Von Klitzing, K Ploog, GH Döhler
Physical Review B 43 (14), 12094, 1991
178 1991 Electrically tunable GHz oscillations in doped GaAs-AlAs superlattices J Kastrup, R Hey, KH Ploog, HT Grahn, LL Bonilla, M Kindelan, ...
Physical Review B 55 (4), 2476, 1997
172 1997 Semiconductor superlattices: growth and electronic properties HT Grahn
World Scientific, 1995
171 1995 Optical communication of spin information between light emitting diodes R Farshchi, M Ramsteiner, J Herfort, A Tahraoui, HT Grahn
Applied Physics Letters 98 (16), 162508, 2011
168 2011 Picosecond interferometric technique for study of phonons in the Brillouin frequency range C Thomsen, HT Grahn, HJ Maris, J Tauc
Optics communications 60 (1-2), 55-58, 1986
151 1986 Synchronization and chaos induced by resonant tunneling in GaAs/AlAs superlattices Y Zhang, J Kastrup, R Klann, KH Ploog, HT Grahn
Physical review letters 77 (14), 3001, 1996
148 1996 Self-oscillations of domains in doped GaAs-AlAs superlattices J Kastrup, R Klann, HT Grahn, K Ploog, LL Bonilla, J Galán, M Kindelan, ...
Physical Review B 52 (19), 13761, 1995
135 1995 Multistability of the current‐voltage characteristics in doped GaAs‐AlAs superlattices J Kastrup, HT Grahn, K Ploog, F Prengel, A Wacker, E Schöll
Applied physics letters 65 (14), 1808-1810, 1994
134 1994 Optical studies of electric field domains in GaAs- HT Grahn, H Schneider, K Von Klitzing
Physical Review B 41 (5), 2890, 1990
134 1990 Resonance-induced delocalization of electrons in GaAs-AlAs superlattices H Schneider, HT Grahn, K Klitzing, K Ploog
Physical review letters 65 (21), 2720, 1990
133 1990 Time-resolved study of vibrations of a -Ge:H/a -Si:H multilayers HT Grahn, HJ Maris, J Tauc, B Abeles
Physical Review B 38 (9), 6066, 1988
126 1988 