Quantum chemical calculations in the gas phase indicate that the minimum on the potential surface for benzene/benzene corresponds to stacking (parallel displaced) and T-shaped geometries. The most common interaction of two benzene molecules…
Category: 4. Physics
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Non-steady-state optothermal electromotive force in relaxor ferroelectrics
The diffused phase transition distinguishes relaxors from “classical” ferroelectrics, and it manifests itself as a frequency-dependent anomaly of the dielectric response stretched by hundreds of…
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Topological excitonic insulator with tunable momentum order
Keldysh, L. & Kopaev, Y. Possible instability of semimetallic state toward Coulomb interaction. Sov. Phys. Solid State 6, 2219–2224 (1964).
Cloizeaux, J. D. Exciton instability and…
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Breathing ferroelectricity induced topological valley states in kagome niobium halide monolayers
Intrinsic structure and electronic properties
The corresponding properties are studied in detail using Nb3I8 as an example. As illustrated in Fig. 1a, bulk Nb3I8 consists of six layers stacked through interlayer van der Waals stacking, exhibiting…
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Measurement of phonon angular momentum
Einstein, A. & de Haas, W. J. Experimental proof of the existence of Ampère’s molecular currents. KNAW Proc. 18, 696–711 (1915).
Scott, G. G. Review of gyromagnetic ratio experiments. Rev….
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Photoresponsive dual-mode memory transistor for optoelectronic computing: charge storage and synaptic signal processing
Flexible dual-mode synaptic device based on a bilayer dielectric structure
Figure 1a shows the structure of the proposed dual-mode device fabricated on a flexible business card substrate, which provides both memory and synaptic functions within a…
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Optomechanical frequency comb induced by thermal and optical forces in NEMS-based cavity optomechanics
An overview illustrating the OMFC system is shown in Fig. 1a. As depicted, the tip of the tapered optical fiber is attached to the outer photonic crystal nanobeam (PCN). The NNR consists of two cascaded spring-mass systems: a primary linear…
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Enhancing ferroelectric stability: wide-range of adaptive control in epitaxial HfO2/ZrO2 superlattices
Epitaxial growth and structural characterizations of superlattices
(HfO2)n/(ZrO2)n (n = 2, 3, 6, 11, and 16 unit cells) superlattices were epitaxially grown on (001)-oriented La0.67Sr0.33MnO3 (LSMO)-buffered SrTiO3 (STO) substrates at 600 °C…
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Intertwined orders in a quantum material
Hossain, M. S. et al. Nat. Phys. https://doi.org/10.1038/s41567-025-02917-6 (2025).
Keldysh, L. & Kopaev, Y. Sov. Phys. Sol. State 6, 2219–2224 (1964).
Windgätter, L. et al. npj Quantum…
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Precise detection of tiny birefringence with accuracy reaching 10−11 level
Derivation of the theoretical model
We introduce an effective two-level system with the pseudo spin up and spin down being two orthogonal spin-orbit photonic states \(\hat{R}\) and \(\hat{L}\), respectively. Such spin-orbit states are defined in…
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