Publications

Electron capture dynamics into self-assembled quantum dots far from equilibrium with their environment

L. Berg, L. Schnorr, J. Wilkens, T. Heinzel, C. Rothfuchs-Engels, S. Scholz, A. Ludwig, and A. D. Wieck

Phys. Rev. B 109, 235433

Characterization of CD34⁺ Cells from Patients with Acute Myeloid Leukemia (AML) and Myelodysplastic Syndromes (MDS) Using a t-Distributed Stochastic Neighbor Embedding (t-SNE) Protocol

Cathrin Nollmann, Wiebke Moskorz, Christian Wimmenauer, Paul S. Jäger, Ron P. Cadeddu, Jörg Timm, Thomas Heinzel and Rainer Haas

Cancers16071320

Hall effect in a two-dimensional disordered Lorentz gas

Benjamin Sanvee, Jakob Schluck, Mihai Cerchez, Dominique Mailly, Hans W. Schumacher, Klaus Pierz, Thomas Heinzel and Jürgen Horbach

Phys. Rev. B 108, 035301

Identification of nanoparticles as vesicular cargo via Airy scanning fluorescence microscopy and spatial statistics

Christian Wimmenauer and Thomas Heinzel

RSC Adv., 2023, 00188a

(paper) Nanoscale Advances , 2023, 5, 3512-3520

Transient photocapacitance spectroscopy on Au/TiO₂ Schottky diodes with rolled-up nanomembrane electrodes

L. Berg, L. Schnorr, L. Merces, J. Bettini, C. C. Bof Bufon and
T. Heinzel,

Journal of Applied Physics 133, 065704 (2023)

Hysteretic capacitance-voltage characteristics of self-assembled quantum dots far from equilibrium with their environment

L. Schnorr, O. Khoukhi, L. Berg, T. Heinzel, C. Rothfuchs-Engels, S. Scholz, A. Ludwig, and A. D. Wieck

Physical Review B 104, 205310 (2021)

Uptake of carbon nanodots into human AML cells in
comparison to primary hematopoietic cells

Cathrin Nollmann, Christian Wimmenauer, Stefan Fasbender, Saskia Mayer, Ron-Patrick Caddedu, Paul Jäger, Thomas Heinzel and Rainer Haas

RSC Adv., 2021,11, 26303

Relevance of weak and strong classical scattering for the giant negative magnetoresistance in two-dimensional electron gases

B. Horn-Cosfeld, J. Schluck, J. Lammert, M. Cerchez, T. Heinzel, K. Pierz, H. W. Schumacher, and D. Mailly

PhysRevB.104.045306

Electron capture and emission dynamics of self-assembled quantum dots far from equilibrium with the environment

L. Schnorr , J. Labes , L. Kürten , and T. Heinzel
C. Rothfuchs-Engels, S. Scholz, A. Ludwig , and A. D. Wieck

PhysRevB.104.035303

Anomalous transport due to retroreflection

René Lohmann, Beate Horn-Cosfeld, Jakob Schluck, Dominique Mailly, Nima H. Siboni, Hans W. Schumacher, Klaus Pierz, Thomas Heinzel, and Jürgen Horbach

Phys. Rev. B102, 081302(R)

Effect of background scattering on the magnetoconductance of two-dimensional Lorentz gases

B. Horn-Cosfeld, J. Schluck, A. Röben, M. Cerchez, K. Pierz, H. W. Schumacher, D. Mailly
and T. Heinzel

EPL, 128 (2019) 67004

From in vitro to ex vivo: subcellular localization and uptake of graphenequantum dots into solid tumors

David Kersting, Stefan Fasbender, Rabea Pilch, Jennifer Kurth, André Franken, Marina Ludescher, Johanna Naskou, Angelika Hallenberger, Charlotte von Gall, Corinna J Mohr, Robert Lukowski, Katharina Raba, Sandra Jaschinski, Irene Esposito, Johannes C Fischer, Tanja Fehm, Dieter Niederacher, Hans Neubauer and Thomas Heinzel

Nanotechnology 30, 395101 (2019)

The Low toxicity of Graphene Quantum Dots is Reflected by Marginal Gene expression changes of primary Human Hematopoietic Stem cells

Stefan Fasbender, Lisa Zimmermann, Ron-Patrick Cadeddu, Martina Luysberg, Bastian Moll, Christoph Janiak, Thomas Heinzel & Rainer Haas

Nature.com/Scientific Reports 9, 12028 (2019)

2019

Single-particle energy - and optical absorption - spectra of multilayer graphene quantum dots

C. Wimmenauer, J. Scheller, S. Fasbender, T. Heinzel

Superlattices and Microstructures 132, 106171 (2019)

Collimation o electrons at closed magnetic barriers in two-dimensional electron gases

M. Cerchez, T. Chirila, H. Bettermann, B. Schüler, T. Heinzel

Physical Review B99, 085303 (2019)

Bias voltage - Induced oxidation of titanium microelectrodes in planar Ti/TiO_x heterojunctions

S. Herbertz, P. Aleksa, M. Zielinski, D. Welk, T. Heinzel

Superlattices and Microstructures 124, 231-239 (2018)

Quantum signatures of competing electron trajectories in antidot superlattices

J. Schluck, J. Feilhauer, K. Pierz, H. W. Schumacher, D. Kazazis, U. Gennser, and T. Heinzel

Physical Review B 98, 165415 (2018)

Lateral hydrogen microsensors prepared on-chip by local oxidation of platinum-decorated titanium films

S. Herbertz, D. Welk, and T. Heinzel

AIP Advances 8, 055301 (2018)

Laplace deep level transient spectroscopy on self-assembled quantum dots

L. Schnorr, T. Heinzel, S. Scholz, A. Ludwig, and A. D. Wieck

Journal of Applied Physics 124, 104301 (2018)

Nonmonotonic Classical Magnetoconductivity of a Two-Dimensional Electron Gas in a Disordered Array of Obstacles

N. H. Siboni, J. Schluck, K. Pierz, H.W. Schumacher, D. Kazazis, J. Horbach and T. Heinzel

Physical Review Letters 120, 056601 (2018)

Linear negative magnetoresistance in two-dimensional Lorentz gases

J. Schluck, M. Hund, T. Heckenthaler and T. Heinzel

Physical Review B 97, 115301 (2018)

Commensurability oscillations by snake-orbit magnetotransport in two-dimensional elevtron gases

A. Leuschner, J. Schluck, M. Cerchez and T. Heinzel, K. Pierz and H. W. Schumacher

Physical Review B 95, 155440 (2017)

Uptake dynamics of graphene quantum dots into primary human blood cells follogwing in vitro exposure

S. Fasbender, S. Allani, Ch. Wimmenauer,R.P. Cadeddu, K. Raba, J. C. Fischer, B. Bulat, M. Luysberg, C. A. M. Seidel, T. Heinzel and R. Haas

RSC Adv. 7, 12208-12216 (2017)

Probing magnetic microstructures with quasi-ballistic Hall crosses

S. Fasbender, J. Schluck, M. Cerchez,

T. Heinzel, S. Sievers, K. Pierz and H. W. Schumacher

J. Appl. Phys. 119, 094302 (2016)

Deep-level transient spectroscopy at platinum/titanium-dioxide hydrogen sensors

L. Schnorr, M. Cerchez, D. Ostermann and  T. Heinzel

pss 253, 690 (2016)

On-chip planar hydrogen sensor with sub-micrometerspatial resolution

S. Herbertz, M. Cerchez and T. Heinzel

Sensors and Actuators B 221, 401 (2015)

Commensurability resonances in two-dimensional magnetoelectric lateral superlattices

J. Schluck, S. Fasbender, and T. Heinzel

K. Pierz and H. W. Schumacher

D. Kazazis and U. Gennser

PhysRevB.91.195303

Interdependence of electroforming and hydrogen incorporation in nanoporous titanium dioxide

M. Strungaru, M. Cerchez, S. Herbertz,
T. Heinzel, M. El Achhab,
and K. Schierbaum

APPLIED PHYSICS LETTERS 106, 143109 (2015)

Magnetoconductance of a magnetic double barrier in a quantum wire

B. Schüler ^, M. Cerchez , Hengyi Xu ,
T. Heinzel , D. Reuter , A.D. Wieck 

Superlattices and Microstructures 79 (2015) 54–62

Observation of quantum states without a semiclassical equivalence bound
by a magnetic field gradient

B. Schüler, M. Cerchez, Hengyi Xu,
J. Schluck, and T. Heinzel

A. D. Wieck

PHYSICAL REVIEW B 90, 201111(R) (2014)

Dynamics of hydrogen sensing with Pt/TiO2 Schottky diodes

M. Cerchez, H. Langer, M. El Achhab, T. Heinzel, D. Ostermann et al.

Appl. Phys. Lett. 103, 033522 (2013)

2014

 2013

Impurity and edge rouhness scattering in
graphene nanoribbons: the Boltzmann approach
Hengyi Xu and Thomas Heinzel

J. Phys, Cond Mat. 24, 455303 (2012)

Sensing domain wall pinning in the longitudinal
magnetoresistance of a two-dimensional electron gas

D. Kazazis, B. Schüler, M. Granada, U. Gennser, G. Faini,
M. Cerchez,  and T. Heinzel

Superlattices and Microstructures 52,11 (2012)

Geometric magnetoconductance dips by edge roughness in graphene nanoribbons

Hengyi Xu, T. Heinzel and I. V. Zozoulenko

Europhys. Lett. 97, 28008 (2012)

Transition from ballistic to diffusive behavior of graphene ribbons in the presence of warping and charged impurities

J. Klos, A. Shylau, I.V. Zozoulenko, Hengyi Xu and T. Heinzel

Phys. Rev. B 80, 245432 (2009)

cond-mat/0908.4228

Magnetic barrier in a two-dimensional hole gas

M. Cerchez, T. Heinzel, D. Reuter and A. D. Wieck

Superlattices and Microstructures 46, 723 (2009)

Piezoresistance in chemically synthesized polypyrrole thin films

S. Barnoss, H. Shanak, C. Bof Bufon and T. Heinzel

Sensors and  Actuators A 154, 79 (2009)

Edge disorder and localization regimes in bilayer graphene nanoribbons

Hengyi Xu, T. Heinzel, and I. V. Zozoulenko

Phys. Rev. B 80, 045308 (2009)

cond-mat/0904.4133

Edge-disorder-induced Anderson localization and conduction gap in graphene nanoribbons

M. Evaldsson, I. V. Zozoulenko, Hengyi Xu, and T. Heinzel

Phys. Rev. B 78, 161407 (R) (2008)

cond-mat/0805.4326

Magnetic-barrier-induced conductance fluctuations in quantum wires

S. Hugger, Hengyi Xu, A. Tarasov, M. Cerchez, T. Heinzel, I. V. Zozoulenko, D. Reuter and A. D. Wieck

Phys. Rev. B 78, 165307 (2008)

cond-mat/0805.3622

Small scale lateral superlattices in two-dimensional electron gases prepared by diblock copolymer masks

S. Hugger, T. Heinzel and T. Thurn-Albrecht

Appl. Phys. Lett. 93, 102110 (2008)

cond-mat/0806.3896

Magnetoresistance of antidot lattices with grain boundaries

S. Klinkhammer, Hengyi Xu, and T. Heinzel, U. Gennser, G. Faini, C. Ulysse, and A. Cavanna

Phys. Rev. B 77, 235311 (2008)  (Editor's choice)

cond-mat/0804.0999

Magnetic barriers in graphene nanoribbons: Theoretical study of transport properties

Hengyi Xu, T. Heinzel M. Evaldson and I. V. Zozoulenko

Phys. Rev. B 77, 245401 (2008)

cond-mat/0804.0375

Transport properties of chemically synthesized polypyrrole thin Films

C.C. Bof Bufon and T. Heinzel

Phys. Rev. B 76, 245206 (2007)

cond-mat 0707.2711

Influence of magnetic field offsets on the resistance of magnetic barriers in two-dimensional electron gases: experiment and simulations
S. Hugger, M. Cerchez, H. Xu, and T. Heinzel

Phys. Rev. B 76, 195308 (2007)
cond-mat 0708.2032

Resonant reflection at magnetic barriers in quantum wires

Hengyi Xu, T. Heinzel, M. Evaldsson and I. V. Zozoulenko

Phys. Rev. B 75, 205301 (2007)
cond-mat/0701102

Effect of edge transmission and elastic scattering on the resistance of magnetic barriers

M. Cerchez, S. Hugger, T. Heinzel and N. Schulz

Phys. Rev. B 75, 035341 (2007)
cond-mat/0701109

Polypyrole thin- film field- effect transistor

C.C.Bof Bufon and T. Heinzel

Appl. Phys. Lett. 89, 012104 (2006)

Mesoscopic Electronics in Solid State Nanostructures

T. Heinzel

Wiley-VCH (physics textbook)
2006 2 nd edition ISBN3-527-40638-7

Relationship between Chain Length, Disorder, and Resistivity in
Polypyrrole Films

C.C. Bof Bufon, J. Vollmer, T. Heinzel, P. Espindola, H.  John, and J. Heinze
J. Phys. Chem. B.  109,19191 (2005)

Commensurability effects in hexagonal antidot lattices with large antidot diameters

S. Meckler, T. Heinzel, A. Cavanna, G. Faini, U. Gennser, and D. Mailly

Phys. Rev. B 72, 035319 (2005)

Semicrystalline morphology in thin films of poly(3-hexylthiophene)

S. Hugger, R. Thomann, T. Heinzel, and T. Thurn-Albrecht

Colloid Polymer Sci 282, 932 (2004)

Transport signatures of correlated disorder in a two-dimensional electron gas

T. Heinzel, R. Jäggi, E. Ribeiro, M. v. Waldkirch, K.Ensslin, S.E. Ulloa,
G. Medeiros-Ribeiro, and P. M. Petroff

Europhys. Lett. 61, 674 (2003)

Stability of spin states in quantum dots

S. Lindemann, T. Ihn, T. Heinzel, W. Zwerger, K. Ensslin, K. Maranowski, and A. C. Gossard

Phys.  Rev. B 66 195314 (2002)

Lateral superlattices on parabolic quantum wells

S. Lindemann, M. Banninger, T. Ihn,  T. Heinzel, S.E. Ulloa, K. Ensslin, G. Hackenbroich, K. Maranowski, and A. C. Gossard

Phys. Rev. B 66, 165317 (2002)

Bouncing states in quantum dots

S. Lindemann, T. Ihn, S. Bieri, T. Heinzel, K. Ensslin, G. Hackenbroich, K. Maranowski, and A. C. Gossard

Phys. Rev. B  66, 161312 (2002)

Electronic properties of antidot lattices fabricated by atomic force lithography

A. Dorn, M. Sigrist, A. Fuhrer, T. Ihn, T. Heinzel, K. Ensslin, W. Wegscheider, and M. Bichler

Appl. Phys. Lett. 80, 252-254 (2002)

Energy spectra of quantum rings

A. Fuhrer, S. Lüscher, T. Ihn, T. Heinzel, K. Ensslin, W. Wegscheider, and M. Bichler

Nature 413, 822 (2001)

Modelling background charge rearrangements near single-electron transistors as a Poisson process

H.-O. Mueller, M. Furlan, T. Heinzel, and  K. Ensslin

Europhys. Lett. 55, 253 (2001)

Analysis of the temperature-dependent quantum point contact conductance in relation to the metal-insulator transition in two dimensions

V. Senz, T. Heinzel, T. Ihn, S. Lindemann, R. Held, K. Ensslin,W. Wegscheider, and M. Bichler

J. Phys. Condens. Matter 13, 3831 (2001)

Transport properties of quantum dots with hard walls

A. Fuhrer, S. Luescher, T. Heinzel, K. Ensslin, W. Wegscheider, and M. Bichler

Phys. Rev. B  63 , 125309 (2001)

Signatures of Spin Pairing in Chaotic Quantum Dots

S. Luescher,  T. Heinzel, K. Ensslin, W.Wegscheider, and M. Bichler

Phys. Rev. Lett.  86 , 2118 (2001)

Shot Noise by Quantum Scattering in Chaotic Cavities

S. Oberholzer, E.V. Sukhorukov, C. Strunk, C. Schoenenberger, T. Heinzel, W. Wegscheider, and M. Bichler

Phys. Rev. Lett. 86, 2114 (2001)

Electronic Properties of nanostructures defined in Ga[Al]As heterostructures by local oxidation

T. Heinzel, R. Held, S. Luescher, K. Ensslin, W.Wegscheider, and M. Bichler

Review Article on AFM lithography
Physica E  9, 84 (2001)

Single-hole transistor in a p-Si/SiGe quantum well

U. Doetsch, U. Gennser, T. Heinzel, S. Luescher, C. David, G. Dehlinger, D. Gruetzmacher, and K. Ensslin

Appl. Phys. Lett. 78, 341 (2001)

Analysis of the Metallic Phase of Two-dimensional Holes in SiGe in Terms of Temperature Dependent Screening

V. Senz, T. Ihn, T. Heinzel, K. Ensslin, G. Dehlinger, D. Gruetzmacher, and U. Gennser

Phys. Rev. Lett. 85, 4357 (2000)

An optical study of self-assembled In_xGa_1-xAs/GaAs quantum dots embedded in a two-dimensional electron gas

E. Ribeiro, F. Cerdeira, M.J.S.P. Brasil, T. Heinzel, K. Ensslin, G. Medeiros-Ribeiro, and P.M. Petroff

J. Appl. Phys. 87, 7994 (2000)

Shifting a quantum wire through a disordered crystal: Observation of conductance fluctuations in real space

T. Heinzel, G. Salis, R. Held, S. L\"uscher, K. Ensslin, W. Wegscheider, and M. Bichler

Phys. Rev. B 61, R13353 (2000)

Coexistence of weak localization and a metallic phase in Si/SiGe quantum wells

V. Senz,  T. Heinzel, T. Ihn, K.Ensslin, G. Dehlinger, U. Gennser,  and D. Gruetzmacher

Phys. Rev. B 61, R5082 (2000)

In-plane single electron transistor in Ga[Al]As fabricated by scanning probe lithography

S. Lüscher, A. Fuhrer, R. Held, T. Heinzel, K. Ensslin, and W. Wegscheider

Appl. Phys. Lett. 75, 2452 (1999)

Mode spectroscopy and level coupling in ballistic electron waveguides

G. Salis, T. Heinzel, K. Ensslin,  O.J. Homan, and W. Bächtold

Phys. Rev. B 60, 7756 (1999)

Variation of elastic scattering across a quantum well

G. Salis, P. Wirth, T. Heinzel, T. Ihn, K. Ensslin, K. Maranowski, and A.C. Gossard

Phys. Rev. B 59, R5304 (1999)

The fermionic Hanbury Brown and Twiss experiment

M. Henny, S. Oberholzer, C. Strunk, T. Heinzel, K. Ensslin, M. Holland, and C. Schönenberger

Science 284, 296 (1999)

Metal-insulator transition in a disordered two-dimensional electron gas in GaAs-AlGaAs at zero magnetic field

E. Ribeiro, R. Jäggi, T. Heinzel, K. Ensslin, G. Medeiros-Ribeiro, and P.M. Petroff

Phys. Rev. Lett. 82, 996 (1999)

Fabricating tunable semiconductor devices with an atomic force microscope

R. Held, S. Lüscher, T. Heinzel, K. Ensslin, and W. Wegscheider

Appl. Phys. Lett. 75, 1134 (1999)

Individual scatterers as microscopic origin of equilibration between spin-polarized edge channels in the quantum Hall regime

Y. Acremann, T. Heinzel, K. Ensslin, E. Gini, H. Melchior, and M. Holland

Phys. Rev. B 59, 2116 (1999)

In-plane gates and nanostructures fabricated by direct oxidation of semiconductor heterostructures with an atomic force microscope

R. Held, T. Vancura, T. Heinzel, K. Ensslin, M. Holland, and W. Wegscheider

Appl. Phys. Lett., 73, 262 (1998)

InAs self-assembled quantum dots as controllable scattering centers near a two-dimensional electron gas

E. Ribeiro, E. Müller, T. Heinzel, H. Auderset, K. Ensslin, G. Medeiros-Ribeiro, and P. M. Petroff

Phys. Rev. B 58, 1506 (1998)

Statistics of conductance oscillations of a quantum dot in the Coulomb blockade regime

F. Simmel, T. Heinzel, and D.A. Wharam

Europhys. Lett. 38, 123 (1997)

Conductance and addition spectrum of a 2x2 quantum-dot array in the extended Hubbard model

Z. Yu, T. Heinzel, and A.T. Johnson

Phys. Rev. B 55, 13697 (1997)

Fabrication of a semiconductor quantum point contact by lithography with an atomic force microscope

R. Held, T. Heinzel, P. Studerus, K. Ensslin, and M. Holland

Appl. Phys. Lett., 71 , 2689 (1997)

Coulomb blockade oscillations in a quantum dot strongly coupled to leads

T. Heinzel, A.T. Johnson, D.A. Wharam, J.P. Kotthaus, G. Boehm, W. Klein, G. Traenkle, and G. Weimann

Phys. Rev. B 52, 16638 (1995)

Single electron switching in a parallel quantum dot

F. Hofmann, T. Heinzel, D.A. Wharam, J.P. Kotthaus, G. Boehm, W. Klein, G. Traenkle, and G. Weimann

Phys. Rev. B 51, R13872 (1995)

Periodic modulation of Coulomb-blockade oscillations in high magnetic fields

T. Heinzel, D.A. Wharam, J.P. Kotthaus, G. Boehm, W. Klein, G. Traenkle, and G. Weimann

Phys. Rev. B 50, 15113 (1994)

Modulation of Coulomb Blockade Oscillations by Coherent Resonant Tunnelling

T. Heinzel, S. Manus, D.A. Wharam, J.P. Kotthaus, G. Boehm, W. Klein, G. Traenkle, and G. Weimann

Europhys. Lett.  26, 689 (1994)

Current-voltage characteristics of quantum point contacts in the high bias regime

T. Heinzel, D.A. Wharam, F. de Aguiar, J.P. Kotthaus, G. Boehm, W. Klein, G. Traenkle, and G. Weimann

Semicond. Sci. Technol. 9, 1220 (1994)

Labelling Spectroscopy on argonhydride and argondeuteride in a plasma beam Penning tube

N. Adolph, T. Heinzel, M. Weidemüller, and H. Figger

Z. Phys. D 24, 15 (1992)