Landauer formula

The Landauer formula describes how electrical conductance occurs at a microscopic level, specifically through quantum channels or pathways. It states that the ability of a material to conduct electricity depends on the number of these channels available, each contributing a fixed amount to the total conductance. In simple terms, it links the quantum properties of electrons to measurable electrical conductance, showing that conductance is quantized and occurs through discrete channels, especially important in nanoscale devices. This helps us understand how tiny electronic components behave at the quantum level.