material

SnSe

ID:

mp-2168

DOI:

10.17188/1197111


Tags: Tin(II) selenide High pressure experimental phase Tin selenide - HT Tin selenide - beta, HT Tin 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
NM
Formation Energy / Atom
-0.427 eV

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

Energy Above Hull / Atom
0.012 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
5.92 g/cm3

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

Decomposes To
SnSe
Band Gap
0.610 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
Cmcm [63]
Hall
-C 2c 2
Point Group
mmm
Crystal System
orthorhombic

Electronic Structure

Topological data for ICSD ID 50558 from Topological Materials Database
Topological Classification
trivial*
Subclassification
LCEBR
* trivial insulator or metal
Linear Combination of Elementary Band Representations

Band Structure and Density of States

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

X-Ray Diffraction

    Select radiation source:
  • 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]
C (mp-48) <1 1 1> <0 1 0> 0.007 202.9
ZnSe (mp-1190) <1 0 0> <0 1 1> 0.013 164.2
GaAs (mp-2534) <1 0 0> <0 1 1> 0.017 164.2
DyScO3 (mp-31120) <0 1 0> <1 0 1> 0.020 218.9
KTaO3 (mp-3614) <1 1 0> <0 0 1> 0.021 206.1
TbScO3 (mp-31119) <0 1 0> <1 0 1> 0.023 218.9
YVO4 (mp-19133) <1 0 1> <0 1 0> 0.023 276.7
Al (mp-134) <1 1 0> <0 0 1> 0.025 206.1
Fe3O4 (mp-19306) <1 1 0> <0 0 1> 0.025 103.1
MoS2 (mp-1434) <1 0 0> <0 1 1> 0.025 273.6
KCl (mp-23193) <1 0 0> <0 1 1> 0.025 164.2
Al (mp-134) <1 0 0> <1 0 1> 0.030 145.9
Ge (mp-32) <1 0 0> <0 1 1> 0.033 164.2
KTaO3 (mp-3614) <1 0 0> <1 0 1> 0.033 145.9
C (mp-66) <1 0 0> <0 1 1> 0.034 164.2
YAlO3 (mp-3792) <0 1 0> <0 0 1> 0.039 154.6
SrTiO3 (mp-4651) <1 0 0> <0 1 0> 0.041 350.5
MgO (mp-1265) <1 1 0> <0 0 1> 0.042 51.5
GaN (mp-804) <1 0 1> <0 0 1> 0.046 154.6
NdGaO3 (mp-3196) <1 0 0> <0 1 0> 0.047 350.5
DyScO3 (mp-31120) <1 1 0> <0 1 0> 0.049 313.6
Ga2O3 (mp-886) <1 1 -1> <0 1 1> 0.063 164.2
YVO4 (mp-19133) <1 0 0> <0 1 1> 0.086 273.6
Fe3O4 (mp-19306) <1 0 0> <0 1 0> 0.089 73.8
NaCl (mp-22862) <1 0 0> <0 1 1> 0.090 164.2
Cu (mp-30) <1 1 0> <0 0 1> 0.093 206.1
TbScO3 (mp-31119) <1 1 0> <0 1 0> 0.098 313.6
Ni (mp-23) <1 1 0> <0 1 0> 0.109 258.3
TeO2 (mp-2125) <0 0 1> <1 0 1> 0.109 291.9
BN (mp-984) <1 1 1> <0 1 0> 0.113 202.9
TeO2 (mp-2125) <1 1 0> <1 0 1> 0.125 291.9
Te2W (mp-22693) <0 1 1> <1 0 1> 0.125 291.9
BaTiO3 (mp-5986) <0 0 1> <1 0 1> 0.132 145.9
Mg (mp-153) <1 0 1> <1 1 1> 0.134 75.3
CdWO4 (mp-19387) <1 0 0> <1 0 1> 0.135 218.9
LiF (mp-1138) <1 0 0> <0 1 0> 0.146 147.6
CeO2 (mp-20194) <1 0 0> <1 0 1> 0.150 145.9
BN (mp-984) <1 0 1> <1 0 1> 0.153 218.9
ZrO2 (mp-2858) <0 1 0> <0 1 0> 0.156 369.0
Si (mp-149) <1 0 0> <1 0 1> 0.156 145.9
AlN (mp-661) <0 0 1> <0 1 1> 0.157 273.6
SiO2 (mp-6930) <1 1 0> <0 1 1> 0.161 328.4
MgO (mp-1265) <1 0 0> <0 1 0> 0.163 18.4
TiO2 (mp-390) <0 0 1> <0 1 0> 0.172 73.8
TiO2 (mp-390) <1 0 1> <0 1 0> 0.173 313.6
SiO2 (mp-6930) <0 0 1> <0 1 1> 0.176 109.5
LaF3 (mp-905) <0 0 1> <0 1 1> 0.177 273.6
Ag (mp-124) <1 1 1> <0 1 1> 0.183 273.6
LiGaO2 (mp-5854) <1 0 1> <1 0 1> 0.186 218.9
GaN (mp-804) <1 0 0> <0 1 0> 0.187 184.5
Up to 50 entries displayed.
minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Stiffness Tensor Cij (GPa)
73 3 40 0 0 0
3 37 4 0 0 0
40 4 82 0 0 0
0 0 0 2 0 0
0 0 0 0 53 0
0 0 0 0 0 7
Compliance Tensor Sij (10-12Pa-1)
18.5 -0.4 -9 0 0 0
-0.4 27 -1.2 0 0 0
-9 -1.2 16.7 0 0 0
0 0 0 551.2 0 0
0 0 0 0 18.9 0
0 0 0 0 0 135.8
Shear Modulus GV
22 GPa
Bulk Modulus KV
32 GPa
Shear Modulus GR
6 GPa
Bulk Modulus KR
24 GPa
Shear Modulus GVRH
14 GPa
Bulk Modulus KVRH
28 GPa
Elastic Anisotropy
13.08
Poisson's Ratio
0.28

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
TlCl (mp-571079) 0.4000 0.019 2
SnS (mp-559676) 0.1975 0.015 2
PbSe (mp-1063670) 0.2817 0.052 2
PbS (mp-1018115) 0.2208 0.039 2
GeS (mp-12910) 0.3043 0.044 2
Up to 5 similar elemental, binary, ternary, quaternary, etc. structures displayed (dissimilarity threshold 0.75). Ehull: energy above hull per atom [eV].

Synthesis Descriptions

Three in one: Ordered nanostructures of SnSe, SnO2, and elemental tin (see SEM image) were prepared by template-assisted synthesis in porous alumina and macroporous silicon. The use of the templates a [...]
Colloidal SnSe nanowires were prepared from commercially available Sn[N(SiMe3)2]2, and trioctylphosphine selenide (TOP-Se) in oleylamine (OLA) or OLA/TOPO (trioctylphosphine oxide) solvent mixture by [...]
chef hat mixing beaker

Explore more synthesis descriptions for materials of composition SnSe.

Text computed by synthesisproject.org.

Calculation Summary

Elasticity

Methodology

Structure Optimization

Run Type
GGA
Energy Cutoff
520 eV
# of K-points
None
U Values
--
Pseudopotentials
VASP PAW: Sn_d Se
Final Energy/Atom
-4.1707 eV
Corrected Energy
-16.6827 eV
-16.6827 eV = -16.6827 eV (uncorrected energy)

Detailed input parameters and outputs for all calculations


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ICSD IDs
  • 291153
  • 50561
  • 651925
  • 100673
  • 50562
  • 50558
  • 50559
  • 50564
  • 50560
  • 52423
  • 50563
Submitted by
User remarks:
  • High pressure experimental phase
  • Tin(II) selenide

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)