$$\bar{B}_{d,s} \rightarrow D^{*}_{d,s} V$$ B ¯ d , s → D d , s ∗ V and $$\bar{B}_{d,s}^* \rightarrow D_{d,s} V$$ B ¯ d , s ∗ → D d , s V decays in QCD factorization and possible puzzles

Chang, Qin; Chen, Lingxin; Zhang, Yunyun; Sun, J. F.; Yang, Yueling

doi:10.1140/epjc/s10052-016-4378-0

Cited by 367 publications

(612 citation statements)

References 75 publications

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“…To compare their thermal conductivities with ones of other 2D materials, the room-temperature thermal conductivity is converted into thermal sheet conductance 46 , and the corresponding value is 14.2 WK −1 and 12.6 WK −1 , respectively. Their thermal sheet conductances are lower than one of semiconducting transition-metal dichalcogenide, group IV-VI, group-VA and group-IV (expect germanene) monolayers 24,46,50 . The very low thermal sheet conductance suggests that SbTeI and BiTeI monolayers are potential 2D thermoelectric materials.…”

Section: Main Calculated Results and Analysismentioning

confidence: 90%

Potential 2D thermoelectric materialATeI (A= Sb and Bi) monolayers from a first-principles study

Guo

Zhang

2017

Nanotechnology

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Lots of two-dimensional (2D) materials have been predicted theoretically, and further confirmed in experiment, which have wide applications in nanoscale electronic, optoelectronic and thermoelectric devices. Here, the thermoelectric properties of ATeI (A=Sb and Bi) monolayers are systematically investigated, based on semiclassical Boltzmann transport theory. It is found that spin-orbit coupling (SOC) has important effects on electronic transport coefficients in p-type doping, but neglectful influences on n-type ones. The room-temperature sheet thermal conductance is 14.2 WK −1 for SbTeI and 12.6 WK −1 for BiTeI, which are lower than one of most well-known 2D materials, such as transition-metal dichalcogenide, group IV-VI, group-VA and group-IV monolayers. By analyzing group velocities and phonon lifetimes, the very low sheet thermal conductance of ATeI (A=Sb and Bi) monolayers is mainly due to small group velocities. It is found that the high-frequency optical branches contribute significantly to the total thermal conductivity, being obviously different from usual picture with little contribution from optical branches. According to cumulative lattice thermal conductivity with respect to phonon mean free path (MFP), it is difficulty to further reduce lattice thermal conductivity by nanostructures. Finally, possible thermoelectric figure of merit ZT of ATeI (A=Sb and Bi) monolayers are calculated. It is found that the p-type doping has more excellent thermoelectric properties than n-type doping, and at room temperature, the peak ZT can reach 1.11 for SbTeI and 0.87 for BiTeI, respectively. These results make us believe that ATeI (A=Sb and Bi) monolayers may be potential 2D thermoelectric materials, and can stimulate further experimental works to synthesize these monolayers.

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Section: Main Calculated Results and Analysismentioning

confidence: 90%

Potential 2D thermoelectric materialATeI (A= Sb and Bi) monolayers from a first-principles study

Guo

Zhang

2017

Nanotechnology

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“…Although such a kind of dataset are starting to be available (see, e.g., [34] from CFHTLenS, and [36] from DES Science Verification data), the survey area is still too small to allow for reducing the statistical uncertainty to an acceptable level and prevent from cosmic variance effects. Moreover, noiseless convergence maps are also needed in order to validate Eq.…”

Section: Moments From Simulated Mapsmentioning

confidence: 99%

Increasing the lensing figure of merit through higher order convergence moments

et al. 2018

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The unprecedented quality, the increased dataset, and the wide area of ongoing and near future weak lensing surveys allows to move beyond the standard two points statistics thus making worthwhile to investigate higher order probes. As an interesting step towards this direction, we expolore the use of higher order moments (HOM) of the convergence field as a way to increase the lensing Figure of Merit (FoM). To this end, we rely on simulated convergence to first show that HOM can be measured and calibrated so that it is indeed possible to predict them for a given cosmological model provided suitable nuisance parameters are introduced and then marginalized over. We then forecast the accuracy on cosmological parameters from the use of HOM alone and in combination with standard shear power spectra tomography. It turns out that HOM allow to break some common degeneracies thus significantly boosting the overall FoM. We also qualitatively discuss possible systematics and how they can be dealt with.PACS numbers: 98.80.Es, 95.36.+x

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“…[14] In that study,predominant I À motion is reported, in agreement with recent modeling results [21,22] and experimental observations. [23][24][25][26][27] In parallel, dominant ion conduction through methylammonium (MA) ions has been claimed in anumber of other contributions. [28][29][30][31] Some reports even state the possibility of both ions being mobile.…”

mentioning

confidence: 99%

The Nature of Ion Conduction in Methylammonium Lead Iodide: A Multimethod Approach

et al. 2017

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$$\bar{B}_{d,s} \rightarrow D^{}_{d,s} V$$ B ¯ d , s → D d , s ∗ V and $$\bar{B}_{d,s}^ \rightarrow D_{d,s} V$$ B ¯ d , s ∗ → D d , s V decays in QCD factorization and possible puzzles

Cited by 367 publications

References 75 publications

Potential 2D thermoelectric materialATeI (A= Sb and Bi) monolayers from a first-principles study

Potential 2D thermoelectric materialATeI (A= Sb and Bi) monolayers from a first-principles study

Increasing the lensing figure of merit through higher order convergence moments

The Nature of Ion Conduction in Methylammonium Lead Iodide: A Multimethod Approach

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