Quartz 4
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Tag: level
36 items with this tag.
Jun 21, 2026
Perovskite structure (ABX₃)
perovskites
crystallography
phase-transitions
level/1-core
Jun 21, 2026
Perovskite variants — double & antiperovskites
perovskites
crystallography
spintronics
solid-electrolytes
level/2-advanced
Jun 21, 2026
BdG & para-Hermitian diagonalization
linear-algebra
bogoliubov
level/1-core
Jun 21, 2026
Crystal symmetry & space groups
group-theory
symmetry
level/0-foundations
Jun 21, 2026
Green's functions & LKAG
green-functions
many-body
level/1-core
Jun 21, 2026
Second quantization
many-body
fock-space
field-operators
level/0-foundations
Jun 21, 2026
DFT+U
dft
method
level/1-core
Jun 21, 2026
Hartree–Fock theory
electronic-structure
method
mean-field
exact-exchange
level/1-core
Jun 21, 2026
Hellmann–Feynman forces & the Pulay term
electronic-structure
method
forces
lattice-dynamics
level/1-core
Jun 21, 2026
Hybrid functionals
dft
method
level/1-core
Jun 21, 2026
Imaginary modes: artifact vs. instability
phonons
diagnostics
2d-materials
level/2-advanced
Jun 21, 2026
Kohn–Sham DFT
dft
method
density-functional
foundations
level/0-foundations
Jun 21, 2026
Phonons by finite displacement
phonons
workflow
phonopy
crystal
level/1-core
Jun 21, 2026
XC functionals & Jacob's ladder
dft
method
xc-functionals
exact-conditions
level/1-core
Jun 21, 2026
Born–Oppenheimer PES
adiabatic
electronic-structure
lattice-dynamics
level/0-foundations
Jun 21, 2026
The dynamical matrix & the acoustic sum rule
phonons
lattice-dynamics
level/1-core
Jun 21, 2026
Dzyaloshinskii–Moriya & exchange anisotropy
magnetism
level/1-core
Jun 21, 2026
Exchange tensors from broken-symmetry DFT
magnetism
dft
method
level/2-advanced
Jun 21, 2026
Mermin–Wagner
magnetism
statistical-mechanics
level/1-core
Jun 20, 2026
Tight-binding & Bloch's theorem
band-theory
tight-binding
bloch
level/0-foundations
Jun 20, 2026
Maximally-localized Wannier functions
band-theory
wannier
interpolation
level/2-advanced
Jun 20, 2026
The beyond-DFT ladder
dft
method
orientation
correlation
level/1-core
Jun 20, 2026
DFPT & linear response
dft
lattice-dynamics
linear-response
method
level/2-advanced
Jun 20, 2026
GW & quasiparticles
many-body
method
green-functions
spectroscopy
level/2-advanced
Jun 20, 2026
Machine-learned interatomic potentials
mlip
method
machine-learning
potential-energy-surface
level/2-advanced
Jun 20, 2026
Phonons & anharmonicity from MLIPs
mlip
phonons
lattice-dynamics
anharmonicity
level/2-advanced
Jun 20, 2026
Self-interaction & delocalization error
dft
method
sie
exact-conditions
level/1-core
Jun 20, 2026
Anharmonic phonons — QHA, SCHA & the SSCHA
phonons
lattice-dynamics
anharmonicity
level/2-advanced
Jun 20, 2026
Berry phase & the modern theory of polarization
berry-phase
polarization
band-topology
level/2-advanced
Jun 20, 2026
Chiral phonons in tellurium
phonons
chirality
angular-momentum
tellurium
level/3-frontier
Jun 20, 2026
Electron–phonon coupling
electron-phonon
lattice-dynamics
transport
level/2-advanced
Jan 20, 2026
CrI₃ and CrSBr
2d-magnets
magnetism
level/2-advanced
Jan 20, 2026
Flat-band & Kekulé models
flat-bands
model-hamiltonians
level/3-frontier
Jan 20, 2026
SnSe₂/WSe₂ heterostructure
2d-materials
heterostructure
phonons
level/2-advanced
Jan 20, 2026
Density-driven error (DC-DFT)
dft
method
dc-dft
level/2-advanced
Jan 20, 2026
Linear spin-wave theory
magnetism
spin-waves
method
level/2-advanced