This website requires JavaScript.

A theory of criticality for quantum ferroelectric metals

Avraham KleinVladyslav KoziiJonathan RuhmanRafael M. Fernandes
Sep 2022
摘要
A variety of compounds, for example doped paraelectrics and polar metals,exhibit both ferroelectricity and strongly correlated electron physics such aslow-density superconductivity and anomalous transport. Characterizing suchproperties is tied to understanding the quantum dynamics of inversion symmetrybreaking in the presence of itinerant electrons. We present a comprehensiveanalysis of the normal state properties of a metal near a quantum criticaltransition to a ferroelectric state, in both two and three dimensions. Startingfrom a minimal model of electrons coupled to a transverse polar phonon via aRashba-type spin-orbital interaction, we compute the system dynamical responseand find that the system can evince both Fermi and non-Fermi liquid phases, aswell as enhanced pairing with both s-wave and p-wave instabilities.Furthermore, we systematically compute corrections to one-loop theory and finda tendency to quantum order-by-disorder, leading to a phase diagram that caninclude second order, first order, and finite-momentum phase transitions.Finally, we show that the entire phase diagram can be controlled viaapplication of external strain, either compressive or volume-preserving. Ourresults provide a map of the dynamical and thermodynamical phase space ofquantum ferroelectic metals, which can serve in characterizing existingmaterials and in seeking applications for quantum technologies.
展开全部
图表提取

暂无人提供速读十问回答

论文十问由沈向洋博士提出,鼓励大家带着这十个问题去阅读论文,用有用的信息构建认知模型。写出自己的十问回答,还有机会在当前页面展示哦。

Q1论文试图解决什么问题?
Q2这是否是一个新的问题?
Q3这篇文章要验证一个什么科学假设?
0
被引用
笔记
问答