density wave ordering 1first-principles calculations 1high-pressure x-ray diffraction 1nickelates 1structural phase transition 1
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cond-mat.mtrl-sci2025
Evidence of electronic instability driven structural distortion in the nodal line semimetal CoSn
Suman Nandi, Bishal Maity, Shovan Dan +8
Understanding the mechanisms that drive spontaneous rotational symmetry breaking in correlated electron systems is a central challenge in condensed matter physics. Although such sy…
cond-mat.mtrl-sci2025
An underdog story: Re-emergence of a polar instability at high pressure in KNbO3
Mohamad Baker Shoker, Sitaram Ramakrishnan, Boris Croes +12
Ferroelectricity in perovskites is known to be suppressed by a moderate hydrostatic pressure. The notion that a polar instability should reappear in a higher pressure regime is wel…