120 citations · 517 across the 19 of their papers we have counts for
19 papers
Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations
Laurel E. Anderson, Antti Laitinen, Andrew Zimmerman +7
Disorder at the etched edges of graphene quantum dots (GQD) enables random all-to-all interactions between localized charges in partially-filled Landau levels, providing a potentia…
Electron-phonon coupling in copper intercalated BiSe
Maciej Wiesner, Kristie Koski, Antti Laitinen +3
We report charge and heat transport studies in copper-intercalated topological insulator BiSe hybrid devices. Measured conductivity shows impact of quantum corrections, ele…
Suppression of noise in graphene due to non-scalar mobility fluctuations induced by impurity motion
Masahiro Kamada, Weijun Zeng, Antti Laitinen +5
Low frequency resistance variations due to mobility fluctuations is one of the key factors of noise in metallic conductors. According to theory, such noise in a two-dimension…
De Haas-van Alphen effect in graphene
Juuso Manninen, Antti Laitinen, Francesco Massel +1
In our work, we study the dynamics of a graphene Corbino disk supported by a gold mechanical resonator in the presence of a magnetic field. We demonstrate here that our graphene/go…
Electrical low-frequency noise due to surface diffusion of scatterers on an ultra low noise graphene platform
Masahiro Kamada, Antti Laitinen, Weijun Zeng +5
Low-frequency noise is ubiquitous, even in high-end electronic devices. For qubits such noise results in decrease of their coherence times. Recently, it was found that adso…
Joule heating effects in high transparency Josephson junctions
Matti Tomi, Mikhail R. Samatov, Andrey S. Vasenko +3
We study, both theoretically and experimentally, the features on the current-voltage characteristic of a highly transparent Josephson junction caused by transition of the supercond…
Strong magnetoresistance in a graphene Corbino disk at low magnetic fields
Masahiro Kamada, Vanessa Gall, Jayanta Sarkar +4
We have measured magnetoresistance of suspended graphene in the Corbino geometry at magnetic fields up to T, i.e., in a regime uninfluenced by Shubnikov-de Haas oscillati…
Bolometer operating at the threshold for circuit quantum electrodynamics
R. Kokkoniemi, J. -P. Girard, D. Hazra +7
Radiation sensors based on the heating effect of the absorbed radiation are typically relatively simple to operate and flexible in terms of the input frequency. Consequently, they…
Thermoelectric current in a graphene Cooper pair splitter
Z. B. Tan, A. Laitinen, N. S. Kirsanov +7
Thermoelectric effect generating electricity from thermal gradient and vice versa appears in numerous generic applications. Recently, an original prospect of thermoelectricity aris…
Graphene resonator as an ultrasound detector for generalized Love waves in a polymer film with two level states
Antti Laitinen, Jukka-Pekka Kaikkonen, Thanniyil S. Abhilash +6
We have investigated surface shear waves at 22 MHz in a 0.5-micron-thick polymer film on SiO2/Si substrate at low temperatures using suspended and non-suspended graphene as detecto…
Dry transfer method for suspended graphene on lift-off-resist: simple ballistic devices with Fabry-Pérot interference
Ying Liu, T. S. Abhilash, Antti Laitinen +3
We demonstrate a fabrication scheme for clean suspended structures using chemical-vapor-deposition-grown graphene and a dry transfer method on lift-off-resist-coated substrates to…
Breakdown of zero-energy quantum Hall state in graphene in the light of current fluctuations and shot noise
Antti Laitinen, Manohar Kumar, Teemu Elo +3
We have investigated the cross-over from Zener tunneling of single charge carriers to avalanche type of bunched electron transport in a suspended graphene Corbino disk in the zerot…
Gyrotropic Zener tunneling and nonlinear IV curves in the zero-energy Landau level of graphene in a strong magnetic field
Antti Laitinen, Manohar Kumar, Pertti Hakonen +1
We have investigated tunneling current through a suspended graphene Corbino disk in high magnetic fields at the Dirac point, i.e. at filling factor = 0. At the onset of the die…
Composite fermions in graphene fractional quantum Hall state at half filling: evidence for Dirac composite fermions
Antti Laitinen, Manohar Kumar, Pertti J. Hakonen
Composite fermions in fractional quantum Hall (FQH) systems are believed to form a Fermi sea of weakly interacting particles at half filling . Recently, it was proposed (D.…
Unconventional fractional quantum Hall states and Wigner crystallization in suspended Corbino graphene
Manohar Kumar, Antti Laitinen, Pertti J. Hakonen
Competition between liquid and solid states in two-dimensional electron system is an intriguing problem in condensed matter physics. We have investigated competing Wigner crystal a…
Electron-phonon coupling in suspended graphene: supercollisions by ripples
Antti Laitinen, Mika Oksanen, Aurélien Fay +4
Using electrical transport experiments and shot noise thermometry, we find strong evidence that "supercollision" scattering processes by flexural modes are the dominant electron-ph…
Contact doping, Klein tunneling, and asymmetry of shot noise in suspended graphene
Antti Laitinen, G. S. Paraoanu, Mika Oksanen +4
The inherent asymmetry of the electric transport in graphene is attributed to Klein tunneling across barriers defined by -interfaces between positively and negatively…
Electron-optical phonon coupling in suspended bilayer graphene
Antti Laitinen, Manohar Kumar, Mika Oksanen +3
Using electrical transport experiments and shot noise thermometry, we investigate electron-phonon heat transfer rate in a suspended bilayer graphene. Contrary to monolayer graphene…
Single- and multi-mode Fabry-Pérot interference in suspended graphene
Mika Oksanen, Andreas Uppstu, Antti Laitinen +5
Phase coherence of charge carriers leads to electron-wave interference in ballistic mesoscopic conductors. In graphene, such Fabry-Pérot-like interference has been observed, but a…