Abstract
We study the phonon states in high Tc superconducting materials within a weak-coupling polaron model. It is confirmed that the squeezed state of phonons gives lower ground state energy of the whole system than the two-phonon coherent state and the displaced state proposed previously. We also examine a condition that the squeezed state occurs. It follows that the squeezed state can exist when the interband electron transfer is allowed in many-band system.
| Original language | English |
|---|---|
| Pages (from-to) | 1083-1084 |
| Number of pages | 2 |
| Journal | Physica B: Condensed Matter |
| Volume | 165-166 |
| DOIs | |
| Publication status | Published - 1990 Jan 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
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Sota, T., & Suzuki, K. (1990). Phonon squeezed state in high-Tc superconductors. Physica B: Condensed Matter, 165-166, 1083-1084. https://doi.org/10.1016/S0921-4526(09)80127-0