Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Hakonen, Pertti J."'
Autor:
Pandey, Preeti, Manna, Sourav, Frei, Kristiana N., Saji, Jerin, Denis, Anne, Savin, Alexander, Watanabe, Kenji, Taniguchi, Takashi, Hakonen, Pertti J., Das, Ankur, Kumar, Manohar
Since the ground-breaking discovery of the quantum Hall effect, half-quantized quantum Hall plateaus have been some of the most studied and sought-after states. Their importance stems not only from the fact that they transcend the composite fermion f
Externí odkaz:
http://arxiv.org/abs/2410.03896
Publikováno v:
Encyclopedia of Condensed Matter Physics, 2e, vol. 1, pp. 1003-1017 (2024). Chakraborty, Tapash (eds.) Oxford: Elsevier
Fundamental issues of 1/f noise in quantum nanoscience are reviewed starting from basic statistical noise processes. Fundamental noise models based on two-level systems (TLS) are described. We emphasize the importance of TLSs in materials parameter f
Externí odkaz:
http://arxiv.org/abs/2401.11989
Autor:
Laitinen, Antti, Kaikkonen, Jukka-Pekka, Abhilash, Thanniyil S., Todoshchenko, Igor, Manninen, Juuso, Zavyalov, Vladislav, Savin, Alexander, Isacsson, Andreas, Hakonen, Pertti J.
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 detectors. By tracking ultrasound modes detected by oscillations of a trilaye
Externí odkaz:
http://arxiv.org/abs/1903.10345
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 zeroth Landau level. At low bias, we find a tunneling current that follows
Externí odkaz:
http://arxiv.org/abs/1802.08914
We investigate the current-current correlations in a four-terminal Al-AlOx-Al tunnel junction where shot noise dominates. We demonstrate that cross-correlations in the presence of two biasing sources of the Hanbury-Brown and Twiss type are much stron
Externí odkaz:
http://arxiv.org/abs/1706.02895
We have investigated a THz detection scheme based on mixing of electrical signals in a voltage-dependent capacitance made out of suspended graphene. We have analyzed both coherent and incoherent detection regimes and compared their performance with t
Externí odkaz:
http://arxiv.org/abs/1702.05942
Publikováno v:
Phys. Rev. B 97, 075113 (2018)
Composite fermions in fractional quantum Hall (FQH) systems are believed to form a Fermi sea of weakly interacting particles at half filling $\nu=1/2$. Recently, it was proposed (D. T. Son, Phys. Rev. X 5, 031027 (2015)) that these composite fermions
Externí odkaz:
http://arxiv.org/abs/1612.03414
Publikováno v:
Nature Communications (2018) 9:2776
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 and fractional quantum Hall ( FQH ) liquid phases in atomically thin su
Externí odkaz:
http://arxiv.org/abs/1611.02742
Publikováno v:
Nature Communications 7, 12548 (2016)
The existence of vacuum fluctuations is one of the most important predictions of modern quantum field theory. In the vacuum state, fluctuations occurring at different frequencies are uncorrelated. However, if a parameter in the Lagrangian of the fiel
Externí odkaz:
http://arxiv.org/abs/1512.05561
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