Zobrazeno 1 - 10
of 617
pro vyhledávání: '"Gervais, G"'
We report our discovery of a temperature independent anomalous Hall effect (AHE) from 15 mK to 300 K temperature occurring in a 68 nm thick transport device made out of pure bismuth. This surprising behaviour is accompanied with an expected temperatu
Externí odkaz:
http://arxiv.org/abs/2406.12134
Autor:
Vijayakrishnan, Sujatha, Berkson-Korenberg, Z., Mainville, J., Engel, L. W., Lilly, M. P., West, K. W., Pfeiffer, L. N., Gervais, G.
The concept of fluidic viscosity is ubiquitous in our everyday life and for it to arise the fluidic medium must necessarily form a continuum where macroscopic properties can emerge. While a powerful concept for tangible liquids, hydrodynamic manifest
Externí odkaz:
http://arxiv.org/abs/2405.17588
Bismuth, the heaviest of all group V elements with strong spin-orbit coupling, is famously known to exhibit many interesting transport properties, and effects such as Shubnikov-de Haas and de Haas-van Alphen were first revealed in its bulk form. Howe
Externí odkaz:
http://arxiv.org/abs/2402.18441
Autor:
Petrescu, M., Berkson-Korenberg, Z., Vijayakrishnan, Sujatha, West, K. W., Pfeiffer, L. N., Gervais, G.
The 5/2 fractional quantum Hall effect in the second Landau level of extremely clean two-dimensional electron gases has attracted much attention due to its topological order predicted to host quasiparticles that obey non-Abelian quantum statistics an
Externí odkaz:
http://arxiv.org/abs/2312.16135
We theoretically calculate the fundamental noise that is present in gaseous (dilute fluid) flow in channels in the classical and degenerate quantum regime, where the Fermi-Dirac and Bose- Einstein distribution must be considered. Results for both reg
Externí odkaz:
http://arxiv.org/abs/2306.14723
Autor:
Vijayakrishnan, Sujatha, Poitevin, F., Yu, Oulin, Berkson-Korenberg, Z., Petrescu, M., Lilly, M. P, Szkopek, T., Agarwal, Kartiek, West, K. W., Pfeiffer, L. N., Gervais, G.
Publikováno v:
Nature Communications 14, 3906 (2023)
We report low-temperature electronic transport measurements performed in two multi-terminal Corbino samples formed in GaAs/Al-GaAs two-dimensional electron gases (2DEG) with both ultra-high electron mobility ($\gtrsim 20\times 10^6$ $cm^2/Vs)$ and wi
Externí odkaz:
http://arxiv.org/abs/2302.12147
Autor:
Tayari, V., Senkovskiy, B. V., Rybkovskiy, D., Ehlen, N., Fedorov, A., Chen, C. -Y., Avila, J., Asensio, M., Perucchi, A., di Pietro, P., Yashina, L., Fakih, I., Hemsworth, N., Petrescu, M., Gervais, G., Grüneis, A., Szkopek, T.
Publikováno v:
Phys. Rev. B 97, 045424 (2018)
Stannous selenide is a layered semiconductor that is a polar analogue of black phosphorus, and of great interest as a thermoelectric material. Unusually, hole doped SnSe supports a large Seebeck coefficient at high conductivity, which has not been ex
Externí odkaz:
http://arxiv.org/abs/1802.08069
Autor:
Guillemette, J., Hemsworth, N., Vlasov, A., Kirman, J., Mahvash, F., Lévesque, P. L., Siaj, M., Martel, R., Gervais, G., Studenikin, S., Sachrajda, A., Szkopek, T.
Publikováno v:
Phys. Rev. B 97, 161402 (2018)
We report the observation of a giant positive magnetoresistance in millimetre scale hydrogenated graphene with magnetic field oriented in the plane of the graphene sheet. A positive magnetoresistance in excess of 200\% at a temperature of 300 mK was
Externí odkaz:
http://arxiv.org/abs/1802.08295
Publikováno v:
Phys. Rev. Lett. 120, 136801 (2018)
Charge density waves (CDW) in the second and third Landau levels (LL) are investigated by both non-linear electronic transport and noise. The use of a Corbino geometry ensures that only bulk properties are probed, with no contribution from edge state
Externí odkaz:
http://arxiv.org/abs/1711.09143
We propose paramagnetic semiconductors as active media for refrigeration at cryogenic temperatures by adiabatic demagnetization. The paramagnetism of impurity dopants or structural defects can provide the entropy necessary for refrigeration at cryoge
Externí odkaz:
http://arxiv.org/abs/1706.00458