Superconductivity by quantum tunneling?

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Discussion Overview

The discussion revolves around the possibility of achieving superconductivity through quantum tunneling in materials with metal atoms inserted in a substrate, potentially via doping. Participants explore the theoretical implications and properties of such a mechanism, touching on concepts from quantum mechanics and established superconductivity theories.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests that electric current could move through quantum tunneling between metal atoms in a doped substrate, questioning if this could lead to superconductivity.
  • Another participant counters that classical superconductivity requires long-range order and electron pairing mediated by phonons, referencing BCS Theory as a foundational concept.
  • A further inquiry is made about the properties of quantum tunneling conductivity and what specific effects might arise from this mechanism.
  • Another participant points out that typical electron tunneling occurs between two metals separated by a thin insulating layer, emphasizing the need for a solid understanding of quantum mechanics to grasp the phenomenon.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of achieving superconductivity through quantum tunneling, with no consensus reached on the validity of the initial proposal or the implications of quantum tunneling conductivity.

Contextual Notes

Limitations include the dependence on specific definitions of superconductivity and quantum tunneling, as well as unresolved questions regarding the properties and behavior of the proposed system.

Stanley514
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We have some material with metal atoms inserted in substrate.Maybe by dopping.
Electric current is able to move only be quantum tunneling jumping from atom to atom.
Could we obtain superconductor in this way?
 
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No. Classic superconductivity requires long-range order and cooperation between electrons in a pair, as mediated by phonons. Look up the BCS Theory.
 
What exactly will happen to quantum tunneling conductivity?
What properties would it have?
 
The most common example of electron tunneling isn't between occasional isolated atoms, but between two metals separated by a thin insulating layer. A grasp of quantum mechanics is needed to understand the effect. Suggest you pick up an elementary QM text (the old one by E. Anderson is good, otherwise Griffiths is the current standard) and start there.
 

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