Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Vicario, Carlo"'
Autor:
Giorgianni, Flavio, Wehinger, Björn, Allenspach, Stephan, Colonna, Nicola, Vicario, Carlo, Puphal, Pascal, Pomjakushina, Ekaterina, Normand, Bruce, Rüegg, Christian
Publikováno v:
Physical Review B 107, 184440 (2023)
Ideal magnetic frustration forms the basis for the emergence of exotic quantum spin states that are entirely nonmagnetic. Such singlet spin states are the defining feature of the Shastry-Sutherland model, and of its faithful materials realization in
Externí odkaz:
http://arxiv.org/abs/2101.01189
Autor:
Giorgianni, Flavio, Vicario, Carlo, Shalaby, Mostafa, Tenuzzo, Lorenzo Donato, Marcelli, Augusto, Zhang, Tengfei, Zhao, Kai, Chen, Yongsheng, Hauri, Christoph, Lupi, Stefano
Publikováno v:
Adv. Funct. Mater. 2017, 28, 1702652
The conversion of light in sound plays a crucial role in spectroscopy, applied physics, and technology. In this paper, light sound conversion in 3D graphene sponge through a photothermoacoustic mechanism is reported. It is shown that the unique combi
Externí odkaz:
http://arxiv.org/abs/1806.03930
Autor:
Giorgianni, Flavio, Vicario, Carlo, Shalaby, Mostafa, Wu, Junqiao, Liu, Kai, Wang, Kevin, Hauri, Christoph P.
In vanadium dioxide, the interplay between coherent lattice transformation and electronic correlation drives an insulator-to-metal transition (IMT). This phase commutation can be triggered by temperature, pressure, doping or deposition of optical ene
Externí odkaz:
http://arxiv.org/abs/1706.00616
The ideal laser source for the emerging research field of nonlinear Terahertz (THz) spectroscopy should offer radiation with a large versatility and deliver both ultra-intense multi-octave spanning single-cycle pulses and user-selectable multi-cycle
Externí odkaz:
http://arxiv.org/abs/1608.05319
Autor:
Vicario, Carlo, Shalaby, Mostafa, Konyashchenko, Aleksandr, Losev, Leonid, Hauri, Christoph P.
We report on the generation of broadband, high-energy femtosecond pulses centered at 1.28 um by stimulated Raman scattering in pressurized hydrogen cell. Stimulated Raman scattering is performed by two chirped and delayed pulses originating from a mu
Externí odkaz:
http://arxiv.org/abs/1605.09578
Autor:
Shalaby, Mostafa, Vicario, Carlo, Thirupugalmani, Karunanithi, Brahadeeswaran, Srinivasan, Hauri, Christoph P.
We report on high energy terahertz pulses by optical rectification (OR) in the organic crystal N-benzyl-2-methyl-4-nitroaniline (BNA) directly pumped by a conventional Ti:Sapphire (Ti:Sa) amplifier. The simple scheme provides an optical to terahertz
Externí odkaz:
http://arxiv.org/abs/1602.04458
The speed of magnetization reversal is a key feature in magnetic data storage. Magnetic fields from intense THz pulses have been recently shown to induce small magnetization dynamics in Cobalt thin film on the sub-picosecond time scale. Here, we show
Externí odkaz:
http://arxiv.org/abs/1508.02921
The transition frequency between nonthermal coherent magnetic precessions and ultrafast demagnetization is arguably the most sought after answer in magnetism science and technology nowadays. So far, it is believed to be in the terahertz (THz) range.
Externí odkaz:
http://arxiv.org/abs/1506.05397
Publikováno v:
J. Opt. 17 (2015) 094005
Infrared pulses with large spectral width extending from 1.2 to 3.4 um are generated in the organic crystal DAST (4-N, N-dimethylamino-4-N-methylstilbazolium tosylate). The input pulse has a central wavelength of 1.5 um and 65 fs duration. With 2.8 m
Externí odkaz:
http://arxiv.org/abs/1505.07073
We experimentally show that indirect light-induced electron transitions could lead to THz detection on standard CCD and CMOS sensors, introducing this well-established technological concept to the THz range. Unlike its optical counterpart, we found t
Externí odkaz:
http://arxiv.org/abs/1504.03578