Zobrazeno 1 - 10
of 389
pro vyhledávání: '"Jauho Antti-Pekka"'
Grain boundaries play a major role for electron transport in graphene sheets grown by chemical vapor deposition. Here we investigate the electronic structure and transport properties of idealized graphene grain boundaries (GBs) in bi-crystals using f
Externí odkaz:
http://arxiv.org/abs/2401.06556
Autor:
Svaneborg, Jakob Kjærulff, Lorentzen, Aleksander Bach, Gao, Fei, Jauho, Antti-Pekka, Brandbyge, Mads
Terahertz (THz) field pulses can now be applied in Scanning Tunnelling Microscopy (THz-STM) junction experiments to study time resolved dynamics. The relatively slow pulse compared to the typical electronic time-scale calls for approximations based o
Externí odkaz:
http://arxiv.org/abs/2308.12076
Autor:
Jones, Alfred J. H., Gammelgaard, Lene, Sauer, Mikkel O., Biswas, Deepnarayan, Koch, Roland J., Jozwiak, Chris, Rotenberg, Eli, Bostwick, Aaron, Watanabe, Kenji, Taniguchi, Takashi, Dean, Cory R., Jauho, Antti-Pekka, Bøggild, Peter, Pedersen, Thomas G., Jessen, Bjarke S., Ulstrup, Søren
Publikováno v:
ACS Nano 2022, 16, 11, 19354-19362
Massive Dirac fermions are low-energy electronic excitations characterized by a hyperbolic band dispersion. They play a central role in several emerging physical phenomena such as topological phase transitions, anomalous Hall effects and superconduct
Externí odkaz:
http://arxiv.org/abs/2212.08958
Josephson junctions based on quantum dots offer a convenient tunability by means of local gates. Here we analyze a Josephson junction based on a serial double quantum dot in which the two dots are individually gated by phase-shifted microwave tones o
Externí odkaz:
http://arxiv.org/abs/2207.06152
Autor:
Roche, Stephan, Power, Stephen R., Nikolić, Branislav K., García, José Hugo, Jauho, Antti-Pekka
We provide a critical discussion concerning the claim of topological valley currents, driven by a global Berry curvature and valley Hall effect proposed in recent literature. After pointing out a major inconsistency of the theoretical scenario propos
Externí odkaz:
http://arxiv.org/abs/2111.08506
Publikováno v:
Phys. Rev. Research 2, 043427 (2020)
Encapsulating graphene in hexagonal Boron Nitride has several advantages: the highest mobilities reported to date are achieved in this way, and precise nanostructuring of graphene becomes feasible through the protective hBN layers. Nevertheless, subt
Externí odkaz:
http://arxiv.org/abs/2011.13014
Publikováno v:
Phys. Rev. Research 2, 032074(R) (2020)
The Josephson current is investigated in a superconducting graphene bilayer where pristine graphene sheets can make in-plane or out-of-plane displacements with respect to each other. The superconductivity can be of an intrinsic nature, or due to a pr
Externí odkaz:
http://arxiv.org/abs/2009.10730
Autor:
Gonçalves, P. A. D., Christensen, Thomas, Peres, N. M. R., Jauho, Antti-Pekka, Epstein, Itai, Koppens, Frank H. L., Soljačić, Marin, Mortensen, N. Asger
Publikováno v:
Nature Communications 12, 3271 (2021)
A quantitative understanding of the electromagnetic response of materials is essential for the precise engineering of maximal, versatile, and controllable light--matter interactions. Material surfaces, in particular, are prominent platforms for enhan
Externí odkaz:
http://arxiv.org/abs/2008.07613
Autor:
Whelan, Patrick R., Shen, Qian, Zhou, Binbin, Serrano, I. G., Kamalakar, M. Venkata, Mackenzie, David M. A., Ji, Jie, Huang, Deping, Shi, Haofei, Luo, Da, Wang, Meihui, Ruoff, Rodney S., Jauho, Antti-Pekka, Jepsen, Peter U., Bøggild, Peter, Caridad, José M.
Publikováno v:
2D Materials, 2020, 7, 3, 035009
We demonstrate terahertz time-domain spectroscopy (THz-TDS) to be an accurate, rapid and scalable method to probe the interaction-induced Fermi velocity renormalization {\nu}F^* of charge carriers in graphene. This allows the quantitative extraction
Externí odkaz:
http://arxiv.org/abs/2006.00486
Autor:
Svendsen, Mark. K., Wolff, Christian, Jauho, Antti-Pekka, Mortensen, N. Asger, Tserkezis, Christos
Publikováno v:
J. Phys.: Condens. Matter 32, 395702 (2020)
The recent generalised nonlocal optical response (GNOR) theory for plasmonics is analysed, and its main input parameter, namely the complex hydrodynamic convection-diffusion constant, is quantified in terms of enhanced Landau damping due to diffusive
Externí odkaz:
http://arxiv.org/abs/2005.13218