The exchange interaction refers to the magnetic interaction between electrons within an atom, which is determined by the orientation of each electron's magnetic «spin» —
a quantum mechanical property to describe the intrinsic angular momentum carried by elementary particles, with only two options, either «up» or «down».
The reason for this turned out to be
another quantum mechanical property.
«Our experiment reveals
the quantum mechanical property of light on a chip.»
Supersymmetric models posit that every fundamental particle of the standard model (the particles that we know exist — electrons, quarks, and so on) has a partner — a particle with similar interactions but different
quantum mechanical properties.
The feat opens up new possibilities in silicon carbide because its nanoscale defects are a leading platform for new technologies that seek to use
quantum mechanical properties for quantum information processing, sensing magnetic and electric fields and temperature with nanoscale resolution, and secure communications using light.
By programming cells to produce different types of curli fibers under certain conditions, the researchers were able to control the biofilms» properties and create gold nanowires, conducting biofilms, and films studded with quantum dots, or tiny crystals that exhibit
quantum mechanical properties.
To be able to experimentally verify this «and» state and its unique
quantum mechanical properties, the team had to create a large number of these atomic systems under the same conditions and with different settings of the lab setup.
«Harmonizing multiple
quantum mechanical properties which often do not coexist together and trying to do it by design is highly complex,» states Professor Rondinelli.The application of an electric field to the oxide Ag2BiO3 changes the atomic positions and determines whether the spins are coupled in pairs (forming so - called Weyl - fermions) or separated (Rashba - splitting), and whether the material is electrically conductive or not.
For these states, called cluster states of entangled photons,
the quantum mechanical properties are preserved even if parts of the state are destroyed — needed for error - resistant quantum information systems.
Someday, superconductors could make for incredibly efficient power lines and electronic devices, but the development of such practical, room - temperature versions relies on a better understanding of
the quantum mechanical properties of their far colder cousins.
Due to their peculiar
quantum mechanical properties, currents induced by a magnetic field in Moebius molecules flow in the direction opposite to that they would take in normal rings.
Because of their peculiar
quantum mechanical properties these structures are interesting for applications in molecular electronics and optoelectronics.
But when we look at
the quantum mechanical properties of an isolated atom, it turns out that we don't understand how the microscopic properties of the rock material result from the quantum mechanical interactions in an «a priori» fashion.
, but it is the foundation for this question itself: How do microscopic material properties (which are the basis for macroscopic properties) arise from
quantum mechanical properties of fundamental particles and atoms?
Not exact matches
He also noted that the stretching and compressing changed the optical
properties - the color - of the crystals due to the
quantum mechanical effects.
If imbued with a
quantum -
mechanical property known as spin, individual atoms act as tiny bar magnets with north and south poles.
Looking to the future, Franco Nori, who led the research team, says, «Our group's investigations integrate relativistic field - theoretical,
quantum -
mechanical, and optical aspects of the dynamical
properties of light.
This is because
mechanical properties such as a material's springiness and hardness depend on how it is processed — something that
quantum -
mechanical codes by themselves can not describe.
Published by the Condensed Matter research group at the Nordic Institute for Theoretical Physics (NORDITA) at KTH Royal Institute of Technology in Sweden, the Organic Materials Database is intended as a data mining resource for research into the electric and magnetic
properties of crystals, which are primarily defined by their electronic band structure — an energy spectrum of electrons motion which stem from their
quantum -
mechanical properties.
Due to their
quantum mechanical wave - like
properties, when electrons are scattered off a crystal, they interfere with each other to create a diffraction pattern.
Next generation electronics and
quantum computers rely on materials that exhibit
quantum -
mechanical phenomena and related
properties, which can be controlled by external stimuli, e.g. by a battery in a microelectronic circuit.
The possibility to activate multiple
quantum -
mechanical properties in one single material is of fundamental scientific interest but can also expand the spectrum of potential applications.
The new experimental technique may also help other researchers plumb the
properties of materials lacking hydrogen bonds, such as superconductors and semiconductors, where they hope to manipulate the
quantum mechanical behavior of advanced materials.
By taking advantage of the
quantum -
mechanical properties of matter, however, engineers have come up with gadgets that could prove 1,000 times more accurate.
Though chemists ran
quantum -
mechanical calculations to predict what the
properties of compounds with boron triple bonds would be if you could make them stable, it wasn't clear that this would ever be achieved.
They found that, as they had expected, the two unpaired electrons have aligned spins — the
quantum -
mechanical property that gives electrons a magnetic orientation.
Two examples: graphene — single - atom - thick sheets of carbon atoms — has unique
mechanical, electrical, and optical
properties; and two - dimensional electron gases (2DEG)-- planar collections of electrons supported at the interface between certain semiconductors such as gallium arsenide — allow the observation of such emergent behaviors as the
quantum Hall effect and the spin Hall effect.
To study how and why DEB changes in volatility, the researchers measured
properties such as vapor pressures and melting points, probed molecular structure, and ran
quantum mechanical computer simulations to model the hydrogenation process.
They were originally termed «novel Z2 topological invariants» by Kane, in reference to the
quantum -
mechanical properties that cause the electrons to skip along the edge.
Many scientists had attributed its light - emitting
properties to
quantum mechanical effects created by the multitude of tiny columns left by the etching.
Such computers make use of
quantum -
mechanical properties and can therefore solve some particular problems much faster than our current computers.
You would think that electrons would be easy enough to describe — but a
quantum -
mechanical property called «spin» makes that task much less straightforward.
Co-founded and directed by Lawrence Berkeley National Laboratory (Berkeley Lab) scientist Kristin Persson, the Materials Project uses supercomputers to calculate the
properties of materials based on first - principles
quantum -
mechanical frameworks.
The electron does not only carry a charge, though: It has another important
property, spin, which is a
quantum mechanical analog of a rotating body's angular momentum in classical physics.
Predicting
properties of bulk materials and their surfaces using current
quantum mechanical methods requires lengthy calculations using supercomputers.
Their respective theoretical and experimental studies investigate how microscopic objects lose their
quantum -
mechanical properties through interactions with the environment.
Put another way, how all the interfering waves and probabilities of occupying available
quantum states make a transition to a non-
quantum mechanical material
property.