Superconductors. Superconductivity : Easy course for understanding superconductors (What is a superconductor) by Tim D Maxwell

Author:Tim D Maxwell [Maxwell, Tim D]
Language: eng
Format: azw3
Published: 2017-06-07T04:00:00+00:00

in this case will take place unlimited increase (or decrease, if V < 0) Josephson phase n and, hence, the periodic variation in time of the overcurrent I s . Thus, when passing through the Josephson element DC | D>> I c , this current is carried by two components of the current I s and I n , which, according to (3) oscillate (in the pro-tivofaze) in time with a frequency proportional to the DC component V voltage drop across the Josephson junction:

The voltage across the Josephson element of V (t) = I n (t) R n will also oscillate in time at a frequency w and this process is called Josephson generation. This state of the Josephson junction is called resistive. It should be emphasized that despite the presence of the voltage drop across a Josephson junction, superconductivity electrodes forming a Josephson element is stored in the resistive state.

If Josephson element has appreciable self-capacitance C (e.g., tunneling Josephson junction), the resistive state of current therethrough will be the sum of three components: I s , I nand a capacitive component of the current (bias current)

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