Zobrazeno 1 - 10
of 210
pro vyhledávání: '"Merlin, Roberto"'
Autor:
Merlin, Roberto
A fully resolvable quantum many-body Hamiltonian is introduced that mimics the behavior of the autocatalytic chemical reaction A+B <-> 2B involving two different molecular species, A and B. The model also describes two nonlinearly-coupled modes of an
Externí odkaz:
http://arxiv.org/abs/2208.04183
Autor:
Li, Siwen, Drueke, Elizabeth, Porter, Zach, Jin, Wencan, Lu, Zhengguang, Smirnov, Dmitry, Merlin, Roberto, Wilson, Stephen D., Sun, Kai, Zhao, Liuyan
Publikováno v:
Phys. Rev. Lett. 125, 087202 (2020)
We used a combination of polarized Raman spectroscopy and spin wave calculations to study magnetic excitations in the strong spin-orbit-coupled (SOC) bilayer perovskite antiferromagnet $Sr_3Ir_2O_7$. We observed two broad Raman features at ~ 800 $cm^
Externí odkaz:
http://arxiv.org/abs/2008.01052
Autor:
Merlin, Roberto, Bianchini, Andrea
Publikováno v:
Phys. Rev. Research 3, 013012 (2021)
Pulses applied to an inhomogeneously broadened set of harmonic oscillators, previously prepared in squeezed states, can lead to a recovery of coherence, manifesting itself as echoes, similar to those exhibited by an ensemble of spins when excited by
Externí odkaz:
http://arxiv.org/abs/2006.06299
Autor:
Merlin, Roberto
A brief, tutorial account is given of the differences between the near and far regions of the elec-tromagnetic field emphasizing the source-dependent behavior of the former and the universal properties of the latter. Field patterns of near-field plat
Externí odkaz:
http://arxiv.org/abs/2005.13361
Autor:
Jin, Wencan, Li, Siwen, Liu, Jianpeng, Han, Qiang, Porter, Zach, Peterson, Christi, Schmehr, Julian, Boulares, Ibrahim, Sun, Kai, Merlin, Roberto, Wilson, Stephen D., Zhao, Liuyan
Publikováno v:
Phys. Rev. B 99, 041109 (2019)
We have used rotational anisotropic polarized Raman spectroscopy to study the symmetries, the temperature and the doping dependence of the charge ordered state in metallic $(Sr_{1-x}La_{x})_{3}Ir_{2}O_{7}$. Although the Raman probe size is greater th
Externí odkaz:
http://arxiv.org/abs/1810.09087
Autor:
Henstridge, Meredith, Pfeiffer, Carl, Wang, Di, Boltasseva, Alexandra, Shalaev, Vlad M., Grbic, Anthony, Merlin, Roberto
It has been recently shown that especially engineered light beams have the remarkable ability to propagate along curved trajectories in vacuum. Current methods for generating accelerating beams use phase modulators and lenses leading to length scales
Externí odkaz:
http://arxiv.org/abs/1803.01769
Amplification of light through stimulated emission or nonlinear optical interactions has had a transformative impact on modern science and technology. The amplification of other bosonic excitations, like phonons in solids, is likely to open up new re
Externí odkaz:
http://arxiv.org/abs/1708.09231
Autor:
Mankowsky, Roman, Liu, Biaolong, Rajasekaran, Srivats, Liu, Haiyun, Mou, Daixiang, Zhou, X. J., Merlin, Roberto, Först, Michael, Cavalleri, Andrea
We study the response of the one-dimensional charge density wave in K0.3MoO3 to different types of excitation with femtosecond optical pulses. We compare the response to direct excitation of the lattice at mid-infrared frequencies with that to the in
Externí odkaz:
http://arxiv.org/abs/1702.05897
Autor:
Baldini, Edoardo, Mann, Andreas, Benfatto, Lara, Cappelluti, Emmanuele, Acocella, Angela, Silkin, Vyacheslav M., Eremeev, Sergey V., Kuzmenko, Alexey B., Borroni, Simone, Tan, Teng, Xi, Xiaoxiang, Zerbetto, Francesco, Merlin, Roberto, Carbone, Fabrizio
Publikováno v:
Phys. Rev. Lett. 119, 097002 (2017)
In systems having an anisotropic electronic structure, such as the layered materials graphite, graphene and cuprates, impulsive light excitation can coherently stimulate specific bosonic modes, with exotic consequences for the emergent electronic pro
Externí odkaz:
http://arxiv.org/abs/1701.04795
Autor:
Toulouse, Alexis S., Isaacoff, Benjamin P., Shi, Guangsha, Matuchová, Marie, Kioupakis, Emmanouil, Merlin, Roberto
Optical measurements and first-principles calculations of the band structure and exciton states in direct-gap bulk and few-layer PbI2 indicate that the n = 1 exciton is Frenkel-like in nature in that its energy exhibits a weak dependence on thickness
Externí odkaz:
http://arxiv.org/abs/1408.1942