Effective mass may refer to: Effective mass (solid-state physics), a property of an excitation in a crystal analogous to the mass of a free particle Effective...

particle's effective mass (often denoted m ∗ {\textstyle m^{*}} ) is the mass that it seems to have when responding to forces, or the mass that it seems...

frequency of oscillation, and the effective mass of the spring, m e f f {\displaystyle m_{\mathrm {eff} }} , is defined as the mass that needs to be added to...

theoretical physics, negative mass is a hypothetical type of exotic matter whose mass is of opposite sign to the mass of normal matter, e.g. −1 kg. Such...

The thermal effective mass of electrons in a metal is the apparent mass due to interactions with the periodic potential of the crystal lattice, with phonons...

not exactly the same way. For these materials, we define a cyclotron effective mass, m ∗ {\displaystyle m^{*}} so that: ω = q B m ∗ {\displaystyle \omega...

effective mass of GaInAs m*/m° = 0.041 is the smallest for any semiconductor material with an energy bandgap greater than 0.5 eV. The effective mass is...

yield, reaction mass efficiency and effective mass efficiency are all metrics that compare the mass of desired product to the mass of waste. They do...

rest mass m must be imaginary, as a pure imaginary number divided by another pure imaginary number is a real number. Mass versus weight Effective mass (spring–mass...

{\displaystyle e} is the electric charge, m ∗ {\displaystyle m^{*}} is the effective mass of the electron, and ε 0 {\displaystyle \varepsilon _{0}} is the permittivity...

semi-empirical approach for calculating the band structure (particularly effective mass) and optical properties of crystalline solids. It is pronounced "k dot...

the achieved quantum well, understanding variation or mismatch of the effective mass across the heterojunction becomes substantial. The quantum well defined...

compounds behave as if they had an effective mass up to 1000 times the free particle mass. This large effective mass is also reflected in a large contribution...

assessment that mass deworming is "generally highly cost-effective"; however, there is substantial uncertainty about the benefits of mass deworming programs...

calculations lead to an effective mass for the electrons that is typically negative at the top of a band. The negative mass is an unintuitive concept...

_{n\mathbf {k} }^{*}(-i\nabla )\psi _{n\mathbf {k} }} For the effective mass effective mass theorem ∂ 2 ε n ( k ) ∂ k i ∂ k j = ℏ 2 m δ i j + ( ℏ 2 m )...

Effective accelerationism, often abbreviated as "e/acc", is a 21st-century philosophical movement that advocates for an explicitly pro-technology stance...

{n}}_{A}} is the mass transfer rate [mol/s] A {\displaystyle A} is the effective mass transfer area [m2] Δ c A {\displaystyle \Delta c_{A}} is the driving...

/ m ∗ {\displaystyle m/m^{*}} of the free electron mass m {\displaystyle m} to its effective mass m ∗ {\displaystyle m^{*}} in a crystal can be considered...

their attainment of power to the faithful pursuit of effective "mass line" tactics, and a "correct" mass line is supposed to be the essential prerequisite...

In physics, reduced mass is a measure of the effective inertial mass of a system with two or more particles when the particles are interacting with each...

field, etc.) much as they would in a vacuum, though with a different effective mass. Because the electrons behave like an ideal gas, one may also think...

with atomic nuclei. The electron behaves as though it has a different effective mass travelling unperturbed in vacuum. Such an electron is called an electron...

above, gives a large effective mass to quarks, and distinguishes between phases of quark matter. This underlies the bulk of the mass of most hadrons. The...

spring, m {\displaystyle m} is the mass on the end of the spring. If the spring itself has mass, its effective mass must be included in m {\displaystyle...

m_{\text{w}}^{*}} is the effective mass of the carriers within the well region. The effective mass of a carrier is the mass that the electron "feels"...

\Sigma } , and represents the contribution to the particle's energy, or effective mass, due to interactions between the particle and its environment. In electrostatics...

carrier effective mass, and τ is the average scattering time. If the effective mass is anisotropic (direction-dependent), m* is the effective mass in the...

be treated in the single particle formalism, by replacing its mass with the effective mass tensor. In the Standard Model of particle physics, electrons...

relatively narrow allowed energy bands and accordingly, rather heavy Effective mass. (ii) the large radius excitons are called Wannier-Mott excitons, for...