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Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts to both answer philosophical questions about the nature of the universe and provide solutions to technological problems.
A clear picture of how and why cells inevitably lose viability is still lacking. A dynamical systems view of starving bacteria points to a continuous energy expenditure needed for maintaining the right osmotic pressure as an important factor.
A single monolayer semiconductor integrated into a plasmonic tunnel junction exhibits electroluminescence with photon energies that exceed the excitation electron potential. This phenomenon is shown to be indirectly triggered by inelastically tunnelling electrons.
Ultrafast light pulses, if they are sufficiently intense, can induce phase transitions on ultrafast timescales. It is now shown that when a system is first excited by a weak preparatory pulse, this generates local changes in structure that transiently lower the energy barrier to the phase transition, enabling high-speed and energy-efficient transitions.
Strange metal behaviour of high-Tc superconductors, characterised by unconventional electrical and thermodynamic properties, still poses challenges for theory. Smit et al. report experimental features in the self-energy of a strange metal that are consistent with predictions by holographic theoretical methods.
A study demonstrates a new functionality of canted spin order for magnonics and shows that it facilitates mechanisms for ultrafast nonlinear conversion of magnons.
The authors observe THz emission from Ni/Pt heterostructure due to long-range ballistic orbital transport. The velocity of orbital current can be optically tuned by laser fluence, opening the avenue for future optorbitronic devices.
In this work, stable trapping of a two-dimensional Wigner crystal of above 500 ions is achieved, and the quantum simulation of 300 ions with individual state detection demonstrated.
A clear picture of how and why cells inevitably lose viability is still lacking. A dynamical systems view of starving bacteria points to a continuous energy expenditure needed for maintaining the right osmotic pressure as an important factor.