Variation of carrier density in semimetals via short-range correlation: A case study with nickelate NdNiO2
Ruoshi Jiang (姜若诗), Zi-Jian Lang (郎子健), Tom Berlijn, Wei Ku (顧威)
DOI 10.1103/PhysRevB.108.155126 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Carrier density is one of the key controlling factors of material properties, particularly in controlling the essential correlations in strongly correlated materials. Typically, carrier density is externally tuned by doping or gating and remains fixed below room temperature. Strangely, the carrier density in correlated semimetals is often found to vary sensitively against weak external controls such as temperature, magnetic field, and pressure. Here, we develop a realistic simulation scheme that incorporates interatomic noncollinear magnetic correlation without a long-range order. Using the recently discovered nickelate superconductor as an example, we demonstrate a rather generic low-energy mechanism that in semimetals short-range correlation can reversely modulate the carrier density as well. Such a mutual influence between correlation and carrier density provides an extra ingredient for sensitive bifurcating behavior. This special feature of correlated semimetals explains their versatile carrier density at low energy and opens up new possibilities of functionalizing these materials.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NdNiO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Unconventional pressure-dependent interorbital and interlayer doping in superconducting nickelates
similarity 0.94Y. N. Huang & David J. Singh
Source status unknown — claims are unverified
Microscopic theory of superconducting phase diagram in infinite-layer nickelates
similarity 0.93T. Y. Xie et al.
Source status unknown — claims are unverified
Correlations tune the electronic structure of pentalayer nickelates into the superconducting regime
similarity 0.93Paul Worm et al.
Source status unknown — claims are unverified
Strongly correlated doped hole carriers in the superconducting nickelates: Their location, local many-body state, and low-energy effective Hamiltonian
similarity 0.90Zi-Jian Lang (郎子健) et al.
Source status unknown — claims are unverified
Antiferromagnetic fluctuations and dominant dxy-wave pairing symmetry in nickelate-based superconductors
similarity 0.88Chao Chen et al.
Source status unknown — claims are unverified
Formation of a two-dimensional single-component correlated electron system and band engineering in the nickelate superconductor NdNiO2
similarity 0.88Yusuke Nomura et al.
Source status unknown — claims are unverified