2013
Harmonic Oscillator Wave Functions of a Self-Assembled InAs Quantum Dot Measured by Scanning Tunneling Microscopy
K. Teichmann, M. Wenderoth, H. Prüser, K. Pierz, H. W. Schumacher, and R. G. Ulbrich
Nano Lett. 13, 3571 (2013).
Counting Statistics for Electron Capture in a Dynamic Quantum Dot
Lukas Fricke, Michael Wulf, Bernd Kaestner, Vyacheslavs Kashcheyevs, Janis Timoshenko, Pavel Nazarov, Frank Hohls, Philipp Mirovsky, Brigitte Mackrodt, Ralf Dolata, Thomas Weimann, Klaus Pierz, and Hans W. Schumacher
Phys. Rev. Lett. 110 126803 (2013).
Towards quantized current arbitrary wave form synthesis
P. Mirovsky, L. Fricke, F. Hohls, B. Kaestner, C. Leicht, K. Pierz, J. Melcher, and H. W. Schumacher
J. Appl. Phys. 113 213704 (2013).
Error accounting algorithm for electron counting experiments
Michael Wulf
Phys. Rev. B 87 035312 (2013).
2012
Measurement of heavy-hole spin dephasing in (InGa)As quantum dots
R. Dahbashi, J. Hubner, F. Berski, J. Wiegand, X. Marie, K. Pierz, H. W. Schumacher, and M. Oestreich
Appl. Phys. Lett. 100 031906 (2012).
Precision quantization of Hall resistance in transferred graphene
M. Woszczyna, M. Friedemann, M. Götz, E. Pesel, K. Pierz, T. Weimann, and F. J. Ahlers
Appl. Phys. Lett. 100 164106 (2012).
Magnetic and transport properties of as-grown and annealed GaMnAs thick layers
A. Ben-Hamida, N. Liebig, S. Serrano-Guisan, S. Sievers, K. Pierz, H. W. Schumacher
Journal of the Magnetics Society of Japan 36 49 (2012).
Optoelectronic time-domain characterization of a 100 GHz sampling oscilloscope
H. Füser, S. Eichstädt, K. Baaske, C. Elster, K. Kuhlmann, R. Judaschke, K. Pierz, and M. Bieler
Measurement Science and Technology 23 025201 (2012).
Integrated quantized electronics: a semiconductor quantized voltage source
Frank Hohls, Armin C. Welker, Christoph Leicht, Lukas Fricke, Bernd Kaestner, Philipp Mirovsky, Andre Müller, Klaus Pierz, Uwe Siegner and Hans Werner Schumacher
Phys. Rev. Lett. 109, 056802 (2012).
2011
Generation of energy selective excitations in quantum Hall edge states
C. Leicht, P. Mirovsky, B. Kaestner, F. Hohls, V. Kashcheyevs, E. V. Kurganova, U. Zeitler, T. Weimann, K. Pierz and H. W. Schumacher
Semiconductor Science and Technology 26, 055010 (2011).
Quantized current source with mesoscopic feedback
L. Fricke, F. Hohls, N. Ubbelohde, B. Kaestner, V. Kashcheyevs, C. Leicht, P. Mirovsky, K. Pierz, H. W. Schumacher and R. Haug
Phys. Rev. B 83, 193306 (2011).
The quantum Hall impedance standard
J. Schurr, J. Kucera, K. Pierz and B. Kibble
Metrologia 48, 47 (2011).
2010
A Molecular Quantized Charge Pump
V. Siegle, C.-W. Liang, B. Kaestner, H. W. Schumacher, F. Jessen, D. Koelle, R. Kleiner and S. Roth
Nano Letters 10, 3841 (2010).
Universal decay cascade model for dynamical quantum dot initialization
V. Kashcheyevs and B. Kaestner:
Phys. Rev. Lett. 104, 186805 (2010).
The effect of structural parameters and growth temperature on the electron density in asymmetric double-2DEGs
K. Pierz, G. Hein, B. Schumacher, E. Pesel, H. W. Schumacher
Semiconductors, Science & Technology 25 (2010) 035014
Synchronized single electron emission from dynamical quantum dots
P. Mirovsky, B. Kästner, C. Leicht, A.C. Welker, T. Weimann, K. Pierz and H.W. Schumacher
Applied Physics Letters 97, 252104 (2010)
Reversal of coherently controlled ultrafast photocurrents by band mixing in undoped GaAs quantum wells
S. Priyadarshi, A. M. Racu, K. Pierz, U. Siegner, M. Bieler, H. T. Duc, J. Förstner, T. Meier
Physical Review Letters 104 (2010) 217401
All-optical generation of coherent in-plane charge oscillations in GaAs quantum wells
S. Priyadarshi, K. Pierz, U. Siegner, P. Dawson, M. Bieler
Physical Review B 83 (2011) 121307(R)
2009
Single-parameter quantized charge pumping in high magnetic fields
B. Kaestner, C. Leicht, V. Kashcheyevs, K. Pierz, U. Siegner and H. W. Schumacher
Appl. Phys. Lett. 94, 012106 (2009).
Non-adiabatic pumping of single electrons affected by magnetic fields
C. Leicht, B. Kaestner, V. Kashcheyevs, P. Mirovsky, T. Weimann, K. Pierz and H. W. Schumacher
Physica E 42, 911 (2009).
Spatially resolved measurements of depletion properties of large gate two-dimensional electron gas semiconductors terahetz modulators
T. Kleine-Ostmann, K. Pierz, G. Hein, P. Dawson, M. Marso, and M. Koch
Journal of Applied Physics 105 (2009) 093707
Improved optoelectronic technique for the time-domain characterization of sampling oscilloscopes
M. Bieler, M. Spitzer, K. Pierz, and U. Siegner
IEEE Transactions on Instrumentation and Measurement: 58, 4 (2009) 1065 – 1071
Controlling losses with gates and shields to perfect a quantum Hall impedance standard
J. Schurr, B.P. Kibble, G. Hein, K. Pierz
IEEE Transactions on Instrumentation and Measurement: 58, 4 (2009) 973 – 979
Simultaneous generation and detection of ultrashort voltage pulses in low-temperature grown GaAs with below-bandgab laser pulses
M. Bieler, K. Pierz, and U. Siegner
Applied Physics Letters 94 (2009) 051108
Graphene on gallium arsenide: Engeneering the visibility
M. Friedemann, K. Pierz, R. Stosch, and F.J. Ahlers
Applied Physics Letters 95 (2009) 102103
THz spectroscopy of shift currents resulting from asymmetric (110)-oriented GaAs/AlGaAs quantum wells
S. Priyadarshi, M. Leidinger, K. Pierz, A. M. Racu, U. Siegner, M. Bieler, P. Dawson
Applied Physics Letters 95 (2009) 151110
2008
Robust single-parameter quantized charge pumping
B. Kaestner, V. Kashcheyevs, G. Hein, K. Pierz, U. Siegner, H. W. Schumacher
Appl. Phys. Lett. 92, 192106 (2008).
Non-adiabatic single-parameter quantized charge pumping
B. Kaestner, V. Kashcheyevs, S. Amakawa, M.D. Blumenthal, L. Li, T.J.B.M. Janssen, G. Hein, K. Pierz, T. Weimann, U. Siegner, H.W. Schumacher
Phys. Rev. B 77, 153301 (2008).
Electron pumping through quantum dots defined in parallel etched quantum wires
M. D. Blumenthal, B. Kaestner, L. Li, S. Giblin, T.J.B.M. Janssen, M. Pepper, D. Anderson, G. Jones and D.A. Ritchie:
Microelectronics Journal 39, 365 (2008).
Noise measurements of a quantized charge pump
N. Maire, F. Hohls, B. Kaestner, K. Pierz, H. W. Schumacher, and R. J. Haug:
Appl. Phys. Lett. 92, 082112 (2008).
Theoretical and experimental investigations of Coulomb blockade in coupled quantum dot systems
F. J. Kaiser, S. Kohler, P. Hänggi, M. Malecha, J. Ebbecke, A. Wixforth, H. W. Schumacher, B. Kaestner, D. Reuter and A. D. Wieck:
J. Phys.: Condens. Matter 20, 374108 (2008).
Asymmetric double two-dimensional electron gas structures for electrical quantum metrology
K. Pierz, G. Hein, E. Pesel, B. Schumacher, H. W. Schumacher and U. Siegner
Applied Physics Letters 92 (2008) 133509
Piezoelectric exciton acoustic-phonon coupling in single quantum dots
D. Sarkar, H.P. van der Meulen, J.M. Calleja, J.M. Meyer, R.J. Haug, and K. Pierz
Phys. Rev. B 78 (2008) 241305
Resonant optical excitation of longitudinal-optical phonons and intermixing in InAs/AlAs single quantum dots
D. Sarkar, H.P. van der Meulen, J.M. Calleja, J.M. Meyer, R.J. Haug, and K. Pierz
Applied Physics Letters 92 (2008) 181909
2007
Gigahertz quantized charge pumping
M. D. Blumenthal, B. Kaestner, L. Li, S. Giblin, T. J. B. M. Janssen, M. Pepper, D. Anderson, G. Jones, D.A. Ritchie:
Nature Physics 3, 343 (2007).
Rise-time Calibration of 50 GHz Sampling Oscilloscopes: Intercomparison between PTB and NPL
M. Bieler, S. Seitz, M. Spitzer, G. Hein, K. Pierz, U. Siegner, M.A. Basu, A.J.A. Smith, and M.R. Harper
IEEE Trans. Instrum. Meas. 56, 2007, 266
The ac quantum Hall effect as a primary standard of ompedance
J. Schurr, F.-J. Ahlers, G. Hein, K. Pierz
Metrologia 44, 1 (2007) 15-23
Optical properties of InAs/AlAs self-assembled quantum dots
D. Sarkar, J. M. Calleja, H. P. van der Meulen, J. M. Becker, R. J. Haug, K. Pierz
Materials Science Forum 555, 2007, 9-17
Super-Poissonian shot noise in tunneling through coupled self-assembled InAs quantum dots
P. Barthold, F. Hohls, N. MAire, K. Pierz and R.J. Haug
AIP Conf. Proc. 893 (2007) 815
Noise at a Fermi-edge singularity in self-assembled InAs quantum dots
N. Maire, F. Hohls, T. Lüdtke, K. Pierz R.J. Haug
Physical Review B 75, 2007, 233304
Relaxation and recombination in InAs quantum dots
P. Dawson, E. O. Göbel, K. Pierz, O. Rubel, S. D. Baranovskii, P. Thomas
phys. stat. sol. b, 224 (2007) 2803-2815
Surface acoustic wave mediated effects in a coupled multi quantum well
J. Ebbecke and K. Pierz
phys. stat. sol. (c) 4, 2 (2007) 424-426
Shift currents from symmetry reduction and Coulomb effects in (110)-oriented GaAs/Al0.3Ga0.7As quantum wells
M. Bieler, K. Pierz, U. Siegner and P. Dawson
Physical Review B 76 (2007) 161304
2006
Quantized acoustoelectric single electron transport close to equilibrium
F. J. Ahlers, O. F. O. Kieler, B. E. Sagol, K. Pierz, and U. Siegner
J. Appl. Phys. 100, 093702 (2006)
Enhanced Shot Noise in Tunneling through a Stack of Coupled Quantum Dots
P. Barthold, F. Hohls, N. Maire, K. Pierz, R. J. Haug
Phys. Rev. Lett. 96, 246804 (2006)
Fine structure splitting and biexiton binding energy in single self-assembled InAs/AlAs quantum dots
D. Sarkar, H. P. Van der Meulen, J. M. Calleja, J. M. Becker, R. J. Haug, K. Pierz
Physica E 32 (2006) 111-114
Quantum interference currents by excitation of heavy- and light-hole excitons in GaAs/Al0.3Ga0.7As quantum wells
M. Bieler, K. Pierz, U. Siegner and P. Dawson
Physical Review B 73 (2006) 241312R
Nature and dynamics of carrier escape from InAs/GaAs quantum dots
O. Rubel, P. Dawson, S. D. Baranovskii, K. Pierz, P. Thomas, and E. O. Göbel
phys. stat. sol. c, 3 (2006) 2397
AC longitudinal and contact resistance measurements of quantum Hall devices
J. Schurr, F.-J. Ahlers, G. Hein, K. Pierz, F. Overney, B.M. Wood
Metrologia 43 (2006) 163-173
Shot noise measurements of InAs quantum dots at a Fermi edge singularity
N. Maire, F. Hohls, Lüdtke, R.J. Haug and K. Pierz
Physica E 34 (2006) 508-510
Exciton fine structure and biexciton binding energy in single self-assembled InAs/AlAs quantum dots
D. Sarkar, H. P. van der Meulen, J. M. Calleja, J. M. Becker, R. J. Haug, and K. Pierz
Journal of Applied Physics 100 (2006) 023109
Quantized acousto-electric single electron transport close to equilibrium
F.J. Ahlers, O.F. Kieler, E.Sagol, K. Pierz, U. Siegner
Journal of Applied Physics 100 (2006) 093702
Entwicklung eines Spannungsimpulsnormals für die Charakterisierung von Höchstfrequenzsystemen = Development of a voltage pulse standard for the characterization of high-frequency components
M. Bieler, S. Seitz, M. Spitzer, G. Hein, K. Pierz, U. Siegner
Technisches Messen: 73 (2006), 4, 208 – 216
Optical study of single InAs on In0.12Ga0.88As self-assembled quantum dots: biexciton binding energy dependence on the dots size
C. Dal Savio, K. Pierz, G. Ade, H.-U. Danzebrink, E.O. Göbel, A. Hangleiter
Applied Physics B 84 (2006) 317-322
Simultaneous generation of shift and injection currents in (110)-grownGaAs/AlGaAs quantum wells
M. Bieler, K. Pierz, U. Siegner
Journal of Applied Physics 100 (2006) 083710
Correction of picosecond voltage pulses measured with external electro-optic sampling tips
S. Seitz, M. Bieler, G. Hein, K. Pierz, U. Siegner, F.J. Schmückle, W. Heinrich
Measurement Science and Technology 18 (2007) 1353-1360
Characterization of an external electro-optic sampling probe: Influence of probe height on distortion of measured voltage pulses
S. Seitz, M. Bieler, G. Hein, K. Pierz, U. Siegner, F.J. Schmückle, W. Heinrich
Journal of Applied Physics 100 (2006) 113124
2005
Phonons in InAs/AlAs Single Quantum Dots observed by Optical Emission
D. Sarkar, H.P. van der Meulen, J.M Calleja, J. M. Becker and R. J. Haug, K. Pierz
Physical Review B 71, 081302(R) (2005)
Formation of InAs quantum dots and wetting layers in GaAs and AlAs analyzed by cross-sectional scanning tunnelling microscopy
P. Offermans, P. Koeenrad, H. J. Wolter, K. Pierz, M. Roy, P.A. Maksym
Physica E 26 (2005) 236-240
Nanosecond scale carrier dynamics of self-assembled InAs/AlAs quantum dots studied by time-resolved photoluminescence
Z. Ma, K. Pierz, J. Hübner and W.W. Rühle
Physica E 28 (2005) 203-208
Spectroscopy and recombination of InAs/AlAs quantum dots
P. Dawson, E.O. Göbel and K. Pierz
Journal of Applied Physics 98 (2005) 13541
Ultrafast electric field measurements in semiconductors by spectral integration over electric field-induced Franz-Keldysh oscillations
M. Bieler, G. Hein, K. Pierz and U. Siegner, M. Koch
Applied Physics Letters 87 (2005) 42102
Formation of InAs wetting layers studied by cross-sectional scanning tunneling microscopy
P. Offermans, P. Koeenrad, R. Nötzel, H. J. Wolter, K. Pierz
Applied Physics Letters: 87 (2005), 111903
Temperature-dependent optical properties of InAs/GaAs quantum dots: Independent carrier versus exciton relaxationSpectroscopy
P. Dawson, O. Rubel, S. D. Baranovskii, K. Pierz, P. Thomas, and E. O. Göbel
Physical Review B 72 (2005) 235301
Atomic-scale structure and photoluminescence of InAs quantum dots in GaAs and AlAs
P. Offermans, P. M. Koenraad, and J. H. Wolter, K. Pierz, M. Roy and P. A. Maksym
Physical Review B 72 (2005) 165332
Optoelectronic measurement of the transfer function and time response of a 70 GHz sampling oscilloscope
S. Seitz, M. Bieler, M. Spitzer, K. Pierz, G. Hein and U. Siegner
Measurement, Science and Technology 16 (2005) L7-L9
2004
Quantized charge pumping through a quantum dot by surface acoustic waves.
Ebbecke, J.; Fletcher, N. E.; Janssen, T. J. B. M.; Ahlers, F. J.; Pepper, M.; Beere, H. E.; Ritchie, D. A.
Applied Physics Letters, (2004)
Audio signal transmission over THz communication channel using semiconductor modulator
T. Kleine-Ostmann, K. Pierz, G. Hein, P. Dawson, M. Koch
Electronics Letters 40 (2004) 124-126
Room-temperatur operation of an electrically driven terahertz modulator
T. Kleine-Ostmann, P. Dawson, K. Pierz, G. Hein, M. Koch
Applied Physics Letter 84 (2004) 3555
Shot noise in tunneling through a single quantum dot
A. Nauen, F. Hohls, N. Maire, K. Pierz, R. Haug
Physical Review B 70 (2004) 033305
2003
Fletcher, N. E.; Ebbecke, J.; Janssen, T. J. B. M.; Ahlers, F. J.; Pepper, M.; Beere, H. E.; Ritchie, D. A.:
Quantized Acoustoelectric Current Transport Through a Static Quantum Dot Using a Surface Acoustic Wave.
Physical Review B, , 68 (2003), 24, 245310-1-245310-9
J. Ebbecke, N. E. Fletcher, F. J. Ahlers, A. Hartland, and T. J. B. M. Janssen, Study of the limitations of the quantized acoustic current technique at PTB and NPL IEEE Trans. Instrum. Meas. 52, 594 (2003).
Gottwaldt, Lars; Pierz, Klaus; Ahlers, Franz-Josef; Schweitzer, Ludwig; Göbel, Ernst Otto:
Dependence of the widths of integer quantum Hall plateau on quantum lifetime.
Journal of Physics : Condensed matter, 15 (2003), 5073 - 5078
Turchinovich, D.; Pierz, Klaus; Jepsen, P. Uhd:
InAs/GaAs quantum dots as efficient free carrier deep traps.
Physica status solidi (c), 0 (2003), 5, 1556 - 1559
Ma, Zhixun; Pierz, Klaus; Keyser, Ulrich-F.; Haug, Rolf J.:
Photoluminescence of self-assembled InAs/AlAs quantum dots as a function of density.
Physica E, 17 (2003), 1-4, 117 - 119
Gottwaldt, Lars; Pierz, Klaus; Ahlers, Franz-Josef; Göbel, Ernst Otto; Nau, S.; Torunski, T.; Stolz, W.:
Correlation of the physical properties and the interface morphology of AlGaAs/GaAs heterostructures
Journal of Applied Physics, 94 (2003), 4, 2464 - 2472
Hapke-Wurst, I.; Zeitler, U.; Keyer, U. F.; Hapke-Wurst, R. J.; Pierz, Klaus; Ma, Zhixun:
Tuning the onset voltage of resonant tunneling through InAs quantum dots by growth parameters.
Applied Physics Letters, 82 (2003), 8, 1209 - 1211
Gottwaldt, Lars; Pierz, Klaus; Ahlers, Franz-Josef; Göbel, Ernst Otto; Nau, S.; Torunski, T.; Stolz, W.:
Mesoscopic island structure at GaAs/(AlGa)As interfaces grown by MBE.
Journal of Crystal Growth, 251 (2003), 85 - 89
Pierz, Klaus; Ma, Zhixun; Keyser, U. F.; Haug, R. J.:
Kinetically limited quantum dot formation on AlAs(100) surfaces.
Journal of Crystal Growth, 249 (2003), 477 - 482
2002
Nauen, A.; Hapke-Wurst, I.; Hohls, F.; Zeitler, U.; Haug, R. J.; Pierz, Klaus:
Shot noise in self-assembled InAs quantum dots.
Physical Review B, 66 (2002), 161303-1 - 161303-4
Zeitler, Ulrich; Hapke-Wurst, Isabella; Sarkar, D.; Haug, R. J.; Frahm, H.; Pierz, Klaus; Jansen, A. G. M.:
High magnetic fields in semiconductor nanostructures: spin effects in single InAs quantum dots.
Advances in Solid State Physics, 42 (2002), 3 - 12
Dawson, Phil; Ma, Zhixun; Pierz, Klaus; Göbel, Ernst Otto:
Microsecond carrier recombination times in InAs/AlAs quantum dots.
Applied Physics Letters, 81 (2002), 13, 2349 - 2351
Ma, Zhixun; Pierz, Klaus:
Carrier thermalization and activation within self-assembled InAs /AlAs quantum dot states.
Surface Science, 511 (2002), 57 - 64
2001
Pierz, Klaus; Miglo, A.; Hinze, Peter; Ahlers, Franz-Josef; Ade, George; Hapke-Wurst, I.; Zeitler, U.; Haug, R.J.:
Photoluminescence Study of InAs/AlAs Quantum Dots.
Physica status solidi B, basic research, 224 (2001), 1, 119 - 122
Hapke-Wurst, I.; Zeitler, U.; Frahm, H.; Jansen, A. G. M.; Haug, R. J.; Pierz, Klaus:
Singularities in magneto-tunneling through InAs quantum dots.
Physica status solidi B, basic research, 224 (2001), 3, 689 - 692
Meyer, J.M.; Hapke-Wurst, I; Zeitler, U. [speaker]; Haug, R.J.; Pierz, Klaus:
Resonant tunneling through InAs quantum dots in tilted magnetic fields: experimental determination of the g-factor anisotropy.
Physica status solidi B, basic research, 224 (2001), 3, 685 – 688
2000
Ahlers, Franz-Josef; Zorin, Alexander:
Einzel-Elektronen-Transport in metallischen und halbleitenden Strukturen.
PTB-Mitteilungen, 110 (2000), 3, 178 - 187
Ebbecke, Jens; Bastian, Georg; Blöcker, Martin; Pierz, Klaus; Ahlers, Franz-Josef:
Enhanced quantized current driven by surface acoustic waves.
Applied Physics Letters, 77 (2000), 16, 2601 - 2603
Hapke-Wurst, I.; Zeitler, U.; Frahm, H.; Jansen, A.G.M.; Haug, R.J.; Pierz, Klaus:
Magnetic-field induced singularities in spin dependent tunneling through InAs quantum dots.
Physical Review B, 62 (2000), 19, 12621 - 12624
1999
Hapke-Wurst, Isabella; Zeitler, Ulrich; Schumacher, H. W.; Haug, R. J.; Pierz, Klaus; Ahlers, Franz-Josef: Size determination of InAs quantum dots using magneto-tunneling experiments. Semiconductor, Science and Technology, 14 (1999), 11, L41 - L43