“effective mass”的概念、定义、翻译、参考文献-科学参考

effective mass

Physics

The mass that an electron in a crystal acts as if it had. The value of an effective mass can be much smaller or larger than the mass of a free electron and can even be negative. The effective mass can also be anisotropic. The concept of effective mass is very useful in the quantum theory of solids. For example, many impurity states can be regarded as being like the states of a hydrogen atom modified by the dielectric constant of the solid and the effective mass of the electron in the solid.

Chemistry

The mass that an electron acts as if it has when in a crystal. This mass is usually different to the free mass of an electron and can vary in size from extremely low in graphene to very high in a heavy fermion system. The existence of an effective mass is due to the interaction between the electron and the crystal lattice. The concept of effective mass is very useful in the theory of solids. For example, the energy levels of impurities in crystalline silicon can be described very well using this concept.

单词	effective mass
释义	effective mass Physics The mass that an electron in a crystal acts as if it had. The value of an effective mass can be much smaller or larger than the mass of a free electron and can even be negative. The effective mass can also be anisotropic. The concept of effective mass is very useful in the quantum theory of solids. For example, many impurity states can be regarded as being like the states of a hydrogen atom modified by the dielectric constant of the solid and the effective mass of the electron in the solid. Chemistry The mass that an electron acts as if it has when in a crystal. This mass is usually different to the free mass of an electron and can vary in size from extremely low in graphene to very high in a heavy fermion system. The existence of an effective mass is due to the interaction between the electron and the crystal lattice. The concept of effective mass is very useful in the theory of solids. For example, the energy levels of impurities in crystalline silicon can be described very well using this concept.
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