Spin-orbit coupling and electronic correlation effects in epitaxial graphene studied by surface transport (E2)

Project description

Proximity coupling is a promising concept to tune graphene's transport properties. By studying the impact of hybridization, symmetry, doping and quasiparticle interactions, controlled coupling to Rashba interface states, Mott-phases and metallic quantum films will be realized and analyzed by means of nanoscale- and magnetotransport. Charge carrier mobilities will be analyzed with respect to their concentration, spin-orbit coupling and ground state by temperature and B-field dependent measurements under control of intrinsic and interfacial defects. Besides the analysis of samples from project partners, our proposed work will focus on adsorption and intercalation of Pb, Sn, Bi, BiSb as well as organic molecules on various epitaxial graphene on insulation SiC substrates. By means of defined doping lattices, Klein tunneling quantum transport phenomena will be studied.


Composition of the project group


Project-related publications

Morphology of Bi(110) quantum islands on epitaxial graphene

J. Koch, C. Ghosal, S. Sologub, C. Tegenkamp, J. Phys. Condens. Matter 36, 065701 (2024)

DOI-Link

Exploring graphene-substrate interactions: Plasmonic excitation in Sn-intercalated epitaxial graphene

Z. Mamiyev, C. Tegenkamp, 2D Mater. 11, 2 (2024)

DOI-Link

Domain Boundary Formation Within an Intercalated Pb Monolayer Featuring Charge-Neutral Epitaxial Graphene

P. Schädlich, C. Ghosal, M. Stettner, B. Matta, S. Wolff, F. Schölzel, P. Richter, M. Hutter, A. Haags, S. Wenzel, Z. Mamiyev, J. Koch, S. Soubatch, P. Rosenzweig, C. Polley, F. S. Tautz, C. Kumpf, K. Küster, U. Starke, T. Seyller, F. C. Bocquet, C. Tegenkamp, Adv. Mat. Interfaces 10, 27 (2023)

DOI-Link

Quantum Confinement in Epitaxial Armchair Graphene Nanoribbons on SiC Sidewalls

T.T. Nhung Nguyen, S. R. Power, H. Karakachian, U. Starke, C. Tegenkamp, ACS Nano 17, 20345-20352 (2023)

DOI-Link

Proximity-induced gap opening by twisted plumbene in epitaxial graphene

C. Ghosal, M. Gruschwitz, J. Koch, S. Gemming, C. Tegenkamp, Phys. Rev. Lett. 129, 116802 (2022)

DOI-Link

Sn intercalation into the BL/SiC(0001) interface: A detailed SPA-LEED investigation

Z. Mamiyev, C. Tegenkamp, Surfaces and Interfaces 34, 102304 (2022)

DOI-Link

Surface Transport Properties of Pb-intercalated Graphene

M. Gruschwitz, C. Ghosal, T.-H. Shen, S. Wolff, T. Seyller, C. Tegenkamp, Materials 14, 7706 (2021)

DOI-Link

Impact of screening and relaxation on weakly coupled two-dimensional heterostructures

T. T. Nhung Nguyen, T. Sollfrank, C. Tegenkamp, E. Rauls, U. Gerstmann, Phys. Rev. B 103, L201408 (2021)

DOI-Link

Silicon carbide stacking-order-induced doping variation in epitaxial graphene

A. Sinterhauf, G. A. D. Momeni Pakdehi, P. Schadlich, T. T. N. Nguyen, A. A. Zakharov, S. Wundrack, E. Najafidehaghani, F. Speck, K. Pierz, T. Seyller, C. Tegenkamp, H. W. Schumacher, Adv. Funct. Mater. 30, 2004695 (2020)

DOI-Link

High mobility epitaxial graphene on Ge/Si(100) substrates

J. Aprojanz, P. Rosenzweig, T.T. Nhung Nguyen, H. Karakachian, K. Küster, U. Starke, M. Lukosius, G. Lippert, A. Sinterhauf, M. Wenderoth, A. A. Zakharov, C. Tegenkamp, ACS Appl. Mater. Interfaces 12, 43065 (2020)

DOI-Link

Substrate induced nanoscale resistance variation in epitaxial graphene

A. Sinterhauf, G. A. Traeger, D. M. Pakdehi, P. Schadlich, P. Wilke, F. Speck, T. Seyller, C. Tegenkamp, K. Pierz, H. W. Schumacher, M. Wenderoth, Nat. Commun. 11, 555 (2020)

DOI-Link

Thickness dependent coherent and incoherent scattering in electronic transport through epitaxial nontrivial Bi quantum films

D. Abdelbarey, J. Koch, Z. Mamiyev, C. Tegenkamp, H. Pfnür, Phys. Rev. B 102, 115409 (2020)

DOI-Link

Introducing strong correlation effects into graphene by gadolinium intercalation

S. Link, S. Forti, A. Stohr, K. Küster, M. Rosner, D. Hirschmeier, C. Chen, J. Avila, M. C. Asensio, A. A. Zakharov, T. O. Wehling, A. I. Lichtenstein, M. I. Katsnelson, U. Starke, Phys. Rev. B 100, 121407(R) (2019)

DOI-Link

Probing the structural transition from buffer layer to quasifreestanding monolayer graphene by Raman spectroscopy

S. Wundrack, D. Momeni Pakdehi, P. Schadlich, F. Speck, K. Pierz, T. Seyller, H. W. Schumacher, A. Bakin, R. Stosch, Phys. Rev. B 99, 45443 (2019)

DOI-Link

Charge-transfer transition in Au-induced quantum wires on Si(553)

F. Edler, I. Miccoli, H. Pfnür, C. Tegenkamp, Phys. Rev. B 100, 045419 (2019)

DOI-Link

Epitaxial graphene on 6H-SiC(0001): Defects in SiC investigated by STEM

M. Gruschwitz, H. Schletter, S. Schulze, I. Alexandrou, C. Tegenkamp, Phys. Rev. Mater. 3, 094004 (2019)

DOI-Link

Minimum Resistance Anisotropy of Epitaxial Graphene on SiC

D. Momeni Pakdehi, J. Aprojanz, A. Sinterhauf, K. Pierz, M. Kruskopf, P. Willke, J. Baringhaus, J. P. Stockmann, G. A. Traeger, F. Hohls, C. Tegenkamp, M. Wenderoth, F. J. Ahlers, H. W. Schumacher, ACS Appl. Mater. Interfaces 10, 6039 (2018)

DOI-Link

Graphene Ribbon Growth on Structured Silicon Carbide

A. Stohr, J. Baringhaus, J. Aprojanz, S. Link, C. Tegenkamp, Y. Niu, A. A. Zakharov, C. Chen, J. Avila, M. C. Asensio, U. Starke, Ann. Phys. (Berl.) 529, 1700052 (2017)

DOI-Link

Comeback of epitaxial graphene for electronics: large-area growth of bilayer-free graphene on SiC

M. Kruskopf, D. Momeni Pakdehi, K. Pierz, S. Wundrack, R. Stosch, T. Dziomba, M. Gotz, J. Baringhaus, J. Aprojanz, C. Tegenkamp, J. Lidzba, T. Seyller, F. Hohls, F. J. Ahlers, H. W. Schumacher, 2D Mater. 3, 41002 (2016)

DOI-Link

Surface state conductivity in epitaxially grown Bi1-xSbx (111) films

J. Koch, P. Kröger, H. Pfnür, C. Tegenkamp, New J. Phys. 18, 093012 (2016)

DOI-Link

Ballistic bipolar junctions in chemically gated graphene ribbons

J. Baringhaus, A. Stohr, S. Forti, U. Starke, C. Tegenkamp, Sci. Rep. 5, 9955 (2015)

DOI-Link

Observation of correlated spin-orbit or in a strongly anisotropic quantum wire system

C. Brand, H. Pfnür, G. Landolt, S. Muff, J. H. Dil, T. Das, C. Tegenkamp, Nat. Commun. 6, 8118 (2015)

DOI-Link

Exceptional ballistic transport in epitaxial graphene nanoribbons

J. Baringhaus, M. Ruan, F. Edler, A. Tejeda, M. Sicot, A. Taleb-Ibrahimi, A.-P. Li, Z. Jiang, E. H. Conrad, C. Berger, C. Tegenkamp, W. A. de Heer, Nature 506, 349 (2014)

DOI-Link

Snapshots of non-equilibrium Dirac carrier distributions in graphene

I. Gierz, J. C. Petersen, M. Mitrano, C. Cacho, I. C. E. Turcu, E. Springate, A. Stohr, A. Köhler, U. Starke, A. Cavalleri, Nat. Mater. 12, 1119 (2013)

DOI-Link

Plasmon electron-hole resonance in epitaxial graphene

C. Tegenkamp, H. Pfnür, T. Langer, J. Baringhaus, H. W. Schumacher, J. Phys. Condens. Matter 23, 012001 (2011)

DOI-Link

Christoph Tegenkamp
TU Chemnitz
+49 371 531-33103
christoph.tegenkamp@physik.tu-chemnitz.de

https://www.tu-chemnitz.de/physik/AFKO/

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