Isotope Effect of Underdoped Cuprates in the Yang-Rice-Zhang Model
Abstract
The underdoped region of the cuprate's phase diagram displays many novel electronic phenomena both in the normal and the superconducting state. Many of these anomalous properties have found a natural explanation within the resonating valence bond spin liquid phenomenological model of Yang-Rice-Zhang (YRZ) which includes the rise of a pseudogap. This leads to Fermi surface reconstruction and profoundly changes the electronic structure. Here we extend previous work to consider the shift in critical temperature on O to O substitution, The isotope effect has been found experimentally to be very small at optimal doping yet to rapidly increase to very large values with underdoping. The YRZ model provides a natural explanation of this behavior and supports the idea of a pairing mechanism which is mainly spin fluctuations with a subdominant phonon contribution.
Keywords
Cite
@article{arxiv.1412.4214,
title = {Isotope Effect of Underdoped Cuprates in the Yang-Rice-Zhang Model},
author = {E. Schachinger and J. P. Carbotte},
journal= {arXiv preprint arXiv:1412.4214},
year = {2015}
}
Comments
11 pages and 3 figures Accepted for publication by the Journal of Superconductivity and Novel Magnetism