Articles tagged with Superfluidity
Researchers at Columbia University have observed a superfluid transitioning into an insulating phase, exhibiting properties of both liquid-like and solid-like behavior. The finding suggests that the low-temperature phase may be a highly unusual exciton solid, leaving room for further exploration and potential observation of supersolids.
Researchers have successfully controlled the rotation of molecules suspended in liquid helium nano-droplets using a new optical centrifuge. This breakthrough enables scientists to study the behavior of exotic, frictionless superfluids and understand how molecules interact with the quantum environment at various rotational frequencies.
Researchers at Institute of Science Tokyo have discovered a stable superfluid that inherently hosts singularities known as exceptional points. The study reveals how dissipation can stabilize this unique superfluid phase, which features a finite order parameter and emerges deep inside a strongly interacting phase.
University of Queensland researchers have developed a microscopic 'ocean' on a silicon chip, allowing for the study of wave dynamics at an unprecedented scale. The device, made with superfluid helium, enables the observation of striking phenomena, including waves that lean backward and shock fronts.
Researchers at Heidelberg University have successfully triggered supersolid sound waves in a driven quantum system, exhibiting both liquid and solid characteristics. The system, which is far from equilibrium, shows two types of sound waves traveling at different speeds.
Researchers have made a groundbreaking observation of the BKT phase transition in a 2D dipolar gas of ultracold atoms. The study demonstrates how dipolar interactions modify critical parameters and govern superfluidity without conventional symmetry breaking.
Researchers have confirmed hydrogen's superfluidity at the nanoscale, a quantum state of frictionless flow, using helium nanodroplets. This discovery deepens understanding of quantum fluids and could inspire more efficient hydrogen storage and transport for clean energy applications.
Researchers at MIT and Harvard University have directly measured superfluid stiffness in magic-angle graphene for the first time, shedding light on its remarkable properties. The study suggests that quantum geometry governs the material's superconductivity, a key step toward understanding its exceptional properties.
A team of researchers has observed counterflow superfluidity in a two-component Mott insulator for the first time, providing key evidence for this novel quantum state. The study uses ultracold atomic quantum simulation to explore rich quantum modulation and observational techniques.
A team of physicists has observed mini-tornadoes in a supersolid quantum gas, confirming the existence of quantized vortices as a hallmark of superfluidity. The discovery is significant for understanding the behavior of supersolids and their potential applications in fields like condensed matter physics.
Researchers from the University of Cambridge have created a 2D version of the Bose glass, a novel phase of matter that challenges traditional statistical mechanics. The new phase exhibits non-ergodic behavior, meaning it retains its details, and has potential applications in quantum computing.
Researchers at Lancaster University and others are building the most sensitive dark matter detectors using quantum technologies. They aim to detect dark matter particles weighing between 0.01 to a few hydrogen atoms, which could reveal the mass and interactions of these mysterious particles.
Researchers have proposed a new model explaining neutron star glitches, suggesting that the power-law behavior of glitch energies is due to the formation of twisted clusters of superfluid vortices. The study found that the exponent for the power-law behavior closely matched the observed data.
Researchers visualize second sound, a wave-like movement of heat, independent of physical particle motion in a superfluid. The findings expand understanding of heat flow in superconductors and neutron stars.
A new approach by Dr. Hiromitsu Takeuchi suggests measuring quantum viscosity in superfluids by analyzing the terminal velocity of an object falling into a superfluid, demonstrating the existence of quantum viscosity and unifying classical and quantum hydrodynamics.
Scientists at Lancaster University have discovered that superfluid helium-3 behaves like a two-dimensional system when probed with mechanical resonators. This finding has significant implications for our understanding of superfluidity and its potential applications in various fields.
Researchers from FAMU-FSU College of Engineering validated the self-consistent two-way model describing vortex ring motion in superfluid helium. The study provides crucial evidence supporting the recent theoretical model of quantized vortices, resolving long-standing questions and enhancing understanding of vortex dynamics.
Research team settles decade-long debate on Ta2NiSe5's microscopic origin of symmetry breaking; structural instability hinders electronic superfluidity. Advanced experiments and calculations confirm crystal structure changes as driving force behind phase transition.
Scientists at the University of Electro-Communications successfully measured the effects of an ultra-high magnetic field on a transition metal oxide, discovering signs of a new magnetic superfluid state. This achievement has significant implications for spintronics technology and potential applications in quantum computing.
Researchers have discovered a new phase of matter where a quantum liquid becomes solid when heated. The breakthrough was achieved through a collaboration between experimentalists and theoretical physicists, who developed a model that explains the formation of a quantum crystal at finite temperatures.
Researchers predict that layered electronic 2D semiconductors can host a quantum phase of matter called the supersolid. A solid becomes 'super' when its quantum properties match those of superconductors, simultaneously having two orders: solid and super. The study reports the complete phase diagram of this system at low temperatures.
Researchers at Lancaster University have discovered how energy disappears in quantum turbulence, a crucial step towards mastering this phenomenon and its applications. The study reveals the role of Kelvin waves in transferring energy from macroscopic to microscopic length scales.
Researchers at Aalto University have made significant progress in understanding quantum wave turbulence by studying its behavior in ultra-low temperature refrigerators. They found that Kelvin waves transfer energy from macroscopic to microscopic scales, confirming a theoretical prediction about dissipation of energy at small scales.
Researchers at IBS CSLM discovered pair quasiparticles in a classical system of microparticles driven by viscous flow. These long-lived excitations exhibit anti-Newtonian forces that stabilize pairs, similar to the behavior of Dirac quasiparticles in graphene.
The team isolated pairs of atoms within a 3D optical lattice to measure the strength of their mutual interaction. They confirmed a longstanding prediction that the p-wave force between particles reached its maximum theoretical limit.
Scientists at the University of Innsbruck have developed a new method to observe and study ultra-cold mini twisters, quantized vortices that form in dipolar quantum gases. These vortices are a strong indication of superfluidity, a frictionless flow characteristic of certain quantum gases.
Australian researchers have engineered a quantum box for polaritons in a two-dimensional material, achieving large polariton densities and a partially 'coherent' quantum state. The novel technique allows researchers to access striking collective quantum phenomena and enable ultra-energy-efficient technologies.
Researchers have created and observed novel vortices in an ultracold gas, exhibiting unexpected properties due to hidden discrete symmetries. The discovery may lead to breakthroughs in quantum computing and information processing.
A new model developed by FSU researchers predicts the spread of vortices in superfluids, shedding light on a key aspect of turbulence in quantum fluids. The study also validates previous experimental results and provides evidence for the physical mechanism underlying vortex superdiffusion.
Researchers successfully created a two-body time-crystal system in an experiment that challenges our understanding of physics. They also found that time crystals can be used to build useful devices at room temperature, opening up new possibilities for quantum computing.
Researchers at Lancaster University have created a camera-like device that captures images of mini whirlpools in quantum liquids for the first time. The camera uses particle-like disturbances to take pictures of collections of vortices, which are unpredictable and form in specific patterns above a vibrating wire.
Scientists confirm observations of quantized vortices in superfluid helium by simulating quantum vortex dynamics with silicon nanoparticles, revealing new possibilities for optical research. The study enables visualization of quantized vortex reconnection, a key feature of superfluid helium at macroscopic scales.
Researchers at Osaka University used silicon nanoparticles to visualize the coalescence of quantized vortices in superfluid helium. This technique enables better understanding of quantum fluids and materials, including superconductors. The study also opens up new possibilities for optical research on other quantum properties.
Researchers at Dartmouth have built the world's first superfluid circuit using pairs of ultracold electron-like atoms, allowing for controlled exploration of exotic materials like superconductors. The circuit enables analysis of electron movement in highly controllable settings.
Researchers studied vortices in a superfluid, merging into large clusters like cyclones. The results validate Onsager's model, explaining vortex equilibrium and shedding light on turbulent fluid flows.
Scientists have discovered a new type of skyrmion with half-integer topological numbers in a ferromagnetic superfluid, challenging the current understanding of these phase defects. This discovery could lead to a major breakthrough in skyrmion research and its applications in particle physics and spintronics.
A research group led by Ryuichi Shindou proposes a new phenomenon where magnetic spin and electric charge are converted without energy loss in emergent superfluids of 2D materials. This conversion is made possible by exciton condensates, which exhibit dissipationless supercurrent flows.
A team of researchers proposed a novel approach to spintronics, demonstrating dissipationless conversion between magnetic spin and electric charge in an emergent superfluid in 2D materials. This breakthrough could lead to the development of more efficient spintronic devices.
Scientists at Osaka University have successfully manipulated nanoparticles suspended in superfluid helium using optical tweezers, opening the way for new cryogenic applications and potential visualization or control of vortices. The research may help better understand interactions between quantum fluids and classical nanomaterials.
Physicists at Rice University have found telltale signs of antiferromagnetic spin fluctuations coupled to superconductivity in uranium ditelluride, a rare material promising fault-free quantum computing. The discovery upends the leading explanation of how this state of matter arises in the material.
Physicists at the University of Queensland have developed a comprehensive understanding of vortex pinning and unpinning in two-dimensional superfluids. The study reveals four regimes governing these interactions, including a 'pair creation' regime where vortices are pinned to defects.
Researchers have demonstrated a novel topology arising from losses in hybrid light-matter particles, introducing a new avenue to induce topological effects. The study found that the mere presence of loss in an exciton-polariton system causes it to exhibit nontrivial topology.
Researchers at RIT have developed a new method for detecting superfluid motion that is minimally destructive, in situ, and in real-time. The technique uses laser light to detect the frequency of superfluid rotation, enabling scientists to study superfluids without disrupting their motion.
A new Australian study examines systems transitioning from a normal fluid to a quantum state known as a superfluid, which can flow with zero friction. The research provides new insights into the formation of these remarkable states, revealing different timescales and correlations involved.
Engineering researchers at Florida State University have discovered a new mechanism for the spontaneous formation of Onsager vortices in two-dimensional superfluids. The true explanation involves the exit of vortices from the boundary of a disk-shaped BEC, contrary to the well-accepted evaporative heating mechanism.
An Australian-led team of physicists successfully created sloshing quantum liquids, revealing wavy motion and superfluid properties. The experiment provided insights into the speed of sound and potential effects on superfluidity, shedding light on a promising hybrid light-matter system for ultra-low-energy electronics.
Scientists discovered a way to create supersolids using ultracold quantum gases, a state that exhibits both crystalline order and particle flow. The researchers found that by draining the superfluid bath, the droplets lose communication and behave like independent systems, but can be revived by replenishing the bath.
A new semiconductor superlattice device enables superconductivity at temperatures as warm as -3°C, paving the way for ultra-low-energy electronics. The study proposes a 3D exciton superfluid state in stacked atomically-thin layers of transition metal dichalcogenide materials.
A Monash University-led study identifies many-body dephasing as a fundamental cause of quasiparticle death, affecting superconductivity and superfluidity. The research sheds new light on the nature of quasiparticles and has potential implications for near-zero resistance electronic devices.
Researchers from Lancaster University found that exotic particles stick to all surfaces in the superfluid, enabling objects to move at high speeds without destroying the fragile state. This discovery may guide applications in quantum technology and quantum computing.
Zhao is developing numerical algorithms to describe superfluidity and magnetic orders in repulsively interacting Fermi gases of ultracold atoms. His work aims to understand complex quantum matter, enabling scientists to design better materials.
A new study reveals that all initial vortex arrangements in superfluids collapse to form a 'Rankine' super-vortex distribution, similar to a top hat. This universal dynamics phenomenon explains how superfluids dissipate their energy via quantised vortices.
Researchers have successfully observed Josephson oscillations in a 2D Fermi gas, providing new insights into the nature of strongly correlated quantum systems and their potential to revolutionize power distribution through room temperature superconductors.
Scientists discovered a theoretical breakthrough in quantum fluid rotation, revealing a corkscrew-shaped mechanism that drives the fluids into rotation without viscosity. This phenomenon allows superfluids to transfer angular momentum through quantum mechanical interactions.
Researchers developed a new model to study stresses and flows in ultra-cold superfluids. The findings show that the fluid becomes deformed when flowing around impurities, providing valuable insights into quantum mechanical properties at a macroscopic scale.
A new Australian study uses sound waves to probe the unique properties of an ultracold quantum gas, a model system for certain superconductors and nuclear matter. The research reveals strong variations in sound wave behavior as a function of temperature.
Researchers have observed 'quantum depletion' in a non-equilibrium Bose-Einstein condensate, discovering that 'light-like' condensates don't behave as expected. The team detected 'ghost excitations' arising from quantum depletion, resolving a long-standing problem in exciton-polariton condensates.
A team of scientists has discovered a voltage-induced 'superfluid' like penetration effect in liquid metals at room temperature, mimicking the properties of liquid helium superfluids. The phenomenon occurs due to the reduction of surface tension, enabling the liquid metal to superwet and penetrate porous materials.
Scientists have observed the ultrafast reaction of nanobubbles in helium droplets after extreme ultraviolet radiation (XUV) excitation. The findings help understand how nanoparticles interact with energetic radiation and decay, essential information for directly imaging individual nanoparticles.
Scientists have studied the Vela Pulsar, a neutron star 1,000 light years away, to understand its behavior during a glitch. The team found that the star's spin increased before slowing down, providing a glimpse into its interior structure, which consists of three different components.