Low-energy excitations in addition to regualr phonons are systemically detected in the low-temperature specific heat Cp of quasi-1D systems with a charge density wave. A characteristic manifestation of these excitations is a strongly time dependence of Cp: for time spans varying from 1 s to ...
(e/h), which directly indicates the carrier density for low energy bands in graphene. In the figure, some noticeable spectra that reflect the carrier density of the Fermi surfaces appear at a given chemical potential tuned by the gate voltage. Other peaks can be assigned to higher-order ...
First, the pump light energy is focused onto nanoscale hotspots to generate a much larger photocarrier density than graphene devices without metasurfaces. Secondly, the device response at the probe wavelength is highly sensitive to the graphene optical properties in the hotspots and thus results in ...
TransitiondistortedexcitationThe static low-energy excitations,their stability and the undistorted-incommensurate phase transition in Slot-Janssen one-dimensional(1D)modulated crystals are studied anew in detail.The exact results are obtained.ZHANG DegangYAN FengliLI Bozang中国物理快报:英文版...
The same R-matrix calculations are now used to obtain integral and differential cross sections for 1S-3P and 1S-3D excitations. The calculations are performed at 400 energies ranging from the n = 3 thresholds to 24.1 eV for electron scattering angles 20, 60, 90and 120. The results are ...
Although photoexcitation has been employed to unlock the low-temperature equilibrium regimes of thermal catalysis, mechanism underlining potential interplay between electron excitations and surface chemical processes remains elusive. Here, we report an a