Monopolar polarization of crystals

In summary, the article discusses the concept of monopole polarization in highly asymmetric crystals. The author suggests that this is possible by modeling the elementary cell as an arrangement of both point charges and dipoles, with an indirect interaction between them. This does not contradict the multipole expansion of an elementary cell, as the author considers multiple points within one cell rather than a single point.
  • #1
Stanley514
411
2
This one article mention such strange issue as monopole polarization
in highly asymmetric crystals.
http://prb.aps.org/abstract/PRB/v32/i10/p6832_1
(I did not read entire article).
I always thought that polarization could be only dipolar because you
need to get charge separation.How monopole thing could exist in a
crystal?
 
Physics news on Phys.org
  • #2
As far as I can tell, he models the elementary cell as an arrangement of both point charges and dipoles, both polarizable. Hence there is also an indirect interaction of the point charges via the polarized lattice. This is not in contradiction with the multipole expansion of an elementary cell not containing a monopole contribution as he does not consider a multipole series around a single point but several points inside one cell.
 

Related to Monopolar polarization of crystals

1. What is monopolar polarization of crystals?

Monopolar polarization of crystals is a phenomenon in which the electric charge distribution of a crystal is asymmetric along one direction, resulting in a net electric dipole moment.

2. How does monopolar polarization occur in crystals?

Monopolar polarization occurs due to the displacement of ions in a crystal lattice, creating a dipole moment. This displacement can be caused by an external electric field or by thermal energy.

3. What are the applications of monopolar polarization in crystals?

Monopolar polarization is utilized in various electronic devices, such as transistors and capacitors, to control the flow of electric current. It is also important in the production of piezoelectric materials used in sensors and actuators.

4. Can monopolar polarization be reversed?

Yes, monopolar polarization can be reversed by applying an electric field in the opposite direction, causing the ions to reposition themselves and cancel out the dipole moment.

5. Are there any disadvantages of monopolar polarization in crystals?

One potential disadvantage of monopolar polarization is that it can create strain and stress within a crystal lattice, which may lead to mechanical failure over time. Additionally, excessive monopolar polarization can cause dielectric breakdown and damage the crystal structure.

Similar threads

What is the significance of the contact potential in metal-metal interfaces?
    • Atomic and Condensed Matter
Replies
4
Views
7K
Knotted Solitions in multiband superconductors
    • Atomic and Condensed Matter
Replies
1
Views
1K
A How Many Hidden Variables Would It Take to Model Photon Polarization?
    • Quantum Interpretations and Foundations
2
Replies
45
Views
4K
A Exploring Bell's Theorem with Relativity (No Superluminal Comm.)
    • Quantum Physics
Replies
1
Views
1K
What is the role of these elements in entanglement
    • Quantum Physics
Replies
1
Views
1K
I Hidden phase in polarization tests of Bell's inequality?
    • Quantum Physics
2
Replies
49
Views
2K
Spacetime Crystal: Theory & Possibility
    • Astronomy and Astrophysics
Replies
4
Views
2K
Hydrogen Atoms under Magnification (paper)
    • Quantum Physics
Replies
1
Views
2K
B Preon quark models excluded by LHC
    • Beyond the Standard Models
Replies
7
Views
2K
I Does the New Muon g-2 Measurement Indicate Physics Beyond the Standard Model?
    • High Energy, Nuclear, Particle Physics
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top