material

MoSe2

ID:

mp-1634

DOI:

10.17188/1191826

Warnings: [?]
  1. Volume change > 20.0%

Tags: Molybdenum selenide (1/2) Molybdenum diselenide Drysdallite Molybdenum(IV) selenide

Material Details

Final Magnetic Moment
0.000 μB

Calculated total magnetic moment for the unit cell within the magnetic ordering provided (see below). Typically accurate to the second digit.

Magnetic Ordering
Unknown
Formation Energy / Atom
-0.670 eV

Calculated formation energy from the elements normalized to per atom in the unit cell.

Energy Above Hull / Atom
0.000 eV

The energy of decomposition of this material into the set of most stable materials at this chemical composition, in eV/atom. Stability is tested against all potential chemical combinations that result in the material's composition. For example, a Co2O3 structure would be tested for decomposition against other Co2O3 structures, against Co and O2 mixtures, and against CoO and O2 mixtures.

Density
5.69 g/cm3

The calculated bulk crystalline density, typically underestimated due calculated cell volumes overestimated on average by 3% (+/- 6%)

Decomposes To
MoSe2
Band Gap
1.418 eV

In general, band gaps computed with common exchange-correlation functionals such as the LDA and GGA are severely underestimated. Typically the disagreement is reported to be ~50% in the literature. Some internal testing by the Materials Project supports these statements; typically, we find that band gaps are underestimated by ~40%. We additionally find that several known insulators are predicted to be metallic.

Space Group

Hermann Mauguin
P63/mmc [194]
Hall
-P 6c 2c
Point Group
6/mmm
Crystal System
hexagonal

Band Structure

Density of States
Warning! Semi-local DFT tends to severely underestimate bandgaps. Please see the wiki for more info.

sign indicates spin ↑ ↓

  • Cu
  • Ag
  • Mo
  • Fe

Calculated powder diffraction pattern; note that peak spacings may be affected due to inaccuracies in calculated cell volume, which is typically overestimated on average by 3% (+/- 6%)

X-Ray Absorption Spectra

FEFF XANES

Select an element to display a spectrum averaged over all sites of that element in the structure.

Apply Gaussian smoothing:

0 eV
3 eV
FWHM: 0 eV

Download spectra for every symmetrically equivalent absorption site in the structure.

Download FEFF Input parameters.

Warning: These results are intended to be semi-quantitative in that corrections, such as edge shifts and Debye-Waller damping, have not been included.

Substrates

Reference for minimal coincident interface area (MCIA) and elastic energy:
substrate orientation:
substrate material substrate orientation film orientation elastic energy [meV] MCIA [Å2]
WSe2 (mp-1821) <1 0 0> <1 0 0> -0.012 51.4
WSe2 (mp-1821) <1 1 0> <1 1 0> -0.012 89.0
WSe2 (mp-1821) <1 0 1> <1 0 1> -0.009 52.3
CdS (mp-672) <1 0 1> <1 0 0> -0.004 257.0
YAlO3 (mp-3792) <1 1 1> <1 0 0> -0.002 257.0
GaN (mp-804) <1 1 1> <1 0 0> -0.001 154.2
WSe2 (mp-1821) <0 0 1> <0 0 1> 0.000 9.6
PbSe (mp-2201) <1 1 1> <0 0 1> 0.000 67.1
LaF3 (mp-905) <0 0 1> <0 0 1> 0.001 182.1
GaSb (mp-1156) <1 1 1> <0 0 1> 0.002 67.1
BN (mp-984) <0 0 1> <0 0 1> 0.003 38.3
Bi2Se3 (mp-541837) <0 0 1> <0 0 1> 0.004 182.1
TbScO3 (mp-31119) <1 0 0> <0 0 1> 0.004 230.1
MgF2 (mp-1249) <1 1 0> <1 0 0> 0.006 102.8
SrTiO3 (mp-4651) <1 0 0> <1 0 0> 0.006 257.0
WS2 (mp-224) <0 0 1> <0 0 1> 0.008 115.0
CdWO4 (mp-19387) <1 0 0> <0 0 1> 0.009 124.6
MoS2 (mp-1434) <0 0 1> <0 0 1> 0.009 115.0
CdSe (mp-2691) <1 1 1> <0 0 1> 0.009 67.1
LiF (mp-1138) <1 1 1> <0 0 1> 0.012 28.8
GaN (mp-804) <1 1 0> <1 0 0> 0.016 257.0
TePb (mp-19717) <1 1 1> <0 0 1> 0.018 297.2
MgAl2O4 (mp-3536) <1 1 1> <0 0 1> 0.018 115.0
Mg (mp-153) <1 1 0> <1 0 0> 0.026 257.0
AlN (mp-661) <1 0 0> <1 0 0> 0.027 154.2
CaF2 (mp-2741) <1 1 0> <1 0 0> 0.028 257.0
Mg (mp-153) <1 1 1> <1 0 0> 0.029 154.2
GdScO3 (mp-5690) <0 0 1> <0 0 1> 0.032 95.9
MgO (mp-1265) <1 1 1> <0 0 1> 0.035 124.6
LiF (mp-1138) <1 0 0> <0 0 1> 0.037 182.1
Mg (mp-153) <0 0 1> <0 0 1> 0.041 115.0
BN (mp-984) <1 0 1> <1 0 1> 0.046 156.9
Ge(Bi3O5)4 (mp-23352) <1 1 1> <0 0 1> 0.049 182.1
CdTe (mp-406) <1 0 0> <0 0 1> 0.050 306.7
GaP (mp-2490) <1 1 0> <1 0 0> 0.051 257.0
BN (mp-984) <1 0 0> <1 0 0> 0.052 154.2
TeO2 (mp-2125) <1 0 0> <0 0 1> 0.052 210.9
ZnSe (mp-1190) <1 0 0> <0 0 1> 0.052 230.1
InSb (mp-20012) <1 0 0> <0 0 1> 0.056 306.7
GdScO3 (mp-5690) <1 0 0> <0 0 1> 0.057 230.1
CdS (mp-672) <0 0 1> <0 0 1> 0.062 182.1
MgF2 (mp-1249) <0 0 1> <0 0 1> 0.066 153.4
GaAs (mp-2534) <1 0 0> <0 0 1> 0.070 230.1
C (mp-66) <1 1 1> <0 0 1> 0.073 67.1
CaCO3 (mp-3953) <0 0 1> <0 0 1> 0.089 67.1
WS2 (mp-224) <1 1 1> <0 0 1> 0.092 239.6
Al2O3 (mp-1143) <0 0 1> <0 0 1> 0.094 182.1
Fe3O4 (mp-19306) <1 1 1> <0 0 1> 0.098 124.6
BaTiO3 (mp-5986) <1 0 1> <0 0 1> 0.099 115.0
TeO2 (mp-2125) <0 0 1> <0 0 1> 0.099 95.9
Up to 50 entries displayed.
minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Stiffness Tensor Cij (GPa)
140 32 -0 0 0 0
32 140 -0 0 0 0
-0 -0 -3 0 0 -0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 -0 0 0 54
Compliance Tensor Sij (10-12Pa-1)
7.6 -1.8 -0.9 0 0 0
-1.8 7.6 -0.9 0 0 0
-0.9 -0.9 -389.9 0 0 0
0 0 0 2045.8 0 0
0 0 0 0 2045.8 0
0 0 0 0 0 18.6
Shear Modulus GV
27 GPa
Bulk Modulus KV
38 GPa
Shear Modulus GR
1 GPa
Bulk Modulus KR
-3 GPa
Shear Modulus GVRH
14 GPa
Bulk Modulus KVRH
18 GPa
Elastic Anisotropy
78.21
Poisson's Ratio
0.18

Dielectric Properties

Reference for tensor and properties: Methodology
Dielectric Tensor εij (electronic contribution)
14.13 -0.00 0.00
0.00 14.08 0.00
0.00 0.00 3.77
Dielectric Tensor εij (total)
14.59 -0.00 0.00
-0.00 16.82 0.00
0.00 0.00 3.78
Polycrystalline dielectric constant εpoly
(electronic contribution)
10.66
Polycrystalline dielectric constant εpoly
(total)
11.73
Refractive Index n
3.26
Potentially ferroelectric?
True

Calculation Summary

Elasticity

Methodology

Structure Optimization

Run Type
GGA
Energy Cutoff
520 eV
# of K-points
42
U Values
--
Pseudopotentials
VASP PAW: Se Mo_pv
Final Energy/Atom
-6.6171 eV
Corrected Energy
-39.7025 eV
-39.7025 eV = -39.7025 eV (uncorrected energy)

Detailed input parameters and outputs for all calculations


Show JSON History Show BibTex Citation Download BibTex Citation
ICSD IDs
  • 49800
  • 601045
  • 644334
  • 167357

Displaying lattice parameters for primitive cell; note that calculated cell volumes are typically overestimated on average by 3% (+/- 6%). Note the primitive cell may appear less symmetric than the conventional cell representation (see "Structure Type" selector below the 3d structure)