Abstract
We report a 2D material, KCu7P3, with a noncentrosymmetric structure (trigonal space group P31m, a = 6.9637(2) Å, c = 24.1338 (10) Å), which forms both from a molten potassium polyphosphide flux and from the elements. This phase consists of infinite [Cu7P3]- layers with hexagonal P sheets separated by K+ ions. The structure of the layers is unique but related to both Cu3P and the CaCu4P2 structure-types. Single-crystal refinement reveals extensive disorder within the Cu3P-like slabs. KCu7P3 is paramagnetic and exhibits a room temperature resistivity of ∼335 μω cm with a metal-like temperature dependence. The metallic character is supported by density functional theory electronic structure calculations. Hall and Seebeck effect measurements yield p-type behavior with a hole mobility of ∼15 cm2 V-1 s-1 at 300 K and a carrier concentration on the order of 1021 cm-3. KCu7P3 is chemically stable in ambient conditions, as well as in aqueous neutral and acidic solutions.
| Original language | English |
|---|---|
| Pages (from-to) | 10201-10208 |
| Number of pages | 8 |
| Journal | Inorganic Chemistry |
| Volume | 58 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - Aug 5 2019 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
Cite this
KCu7P3 : A Two-Dimensional Noncentrosymmetric Metallic Pnictide. / Rettie, Alexander J.E.; Malliakas, Christos D.; Botana, Antia S.; Bao, Jin Ke; Chung, Duck Young; Kanatzidis, Mercouri G.
In: Inorganic Chemistry, Vol. 58, No. 15, 05.08.2019, p. 10201-10208.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - KCu7P3
T2 - A Two-Dimensional Noncentrosymmetric Metallic Pnictide
AU - Rettie, Alexander J.E.
AU - Malliakas, Christos D.
AU - Botana, Antia S.
AU - Bao, Jin Ke
AU - Chung, Duck Young
AU - Kanatzidis, Mercouri G
PY - 2019/8/5
Y1 - 2019/8/5
N2 - We report a 2D material, KCu7P3, with a noncentrosymmetric structure (trigonal space group P31m, a = 6.9637(2) Å, c = 24.1338 (10) Å), which forms both from a molten potassium polyphosphide flux and from the elements. This phase consists of infinite [Cu7P3]- layers with hexagonal P sheets separated by K+ ions. The structure of the layers is unique but related to both Cu3P and the CaCu4P2 structure-types. Single-crystal refinement reveals extensive disorder within the Cu3P-like slabs. KCu7P3 is paramagnetic and exhibits a room temperature resistivity of ∼335 μω cm with a metal-like temperature dependence. The metallic character is supported by density functional theory electronic structure calculations. Hall and Seebeck effect measurements yield p-type behavior with a hole mobility of ∼15 cm2 V-1 s-1 at 300 K and a carrier concentration on the order of 1021 cm-3. KCu7P3 is chemically stable in ambient conditions, as well as in aqueous neutral and acidic solutions.
AB - We report a 2D material, KCu7P3, with a noncentrosymmetric structure (trigonal space group P31m, a = 6.9637(2) Å, c = 24.1338 (10) Å), which forms both from a molten potassium polyphosphide flux and from the elements. This phase consists of infinite [Cu7P3]- layers with hexagonal P sheets separated by K+ ions. The structure of the layers is unique but related to both Cu3P and the CaCu4P2 structure-types. Single-crystal refinement reveals extensive disorder within the Cu3P-like slabs. KCu7P3 is paramagnetic and exhibits a room temperature resistivity of ∼335 μω cm with a metal-like temperature dependence. The metallic character is supported by density functional theory electronic structure calculations. Hall and Seebeck effect measurements yield p-type behavior with a hole mobility of ∼15 cm2 V-1 s-1 at 300 K and a carrier concentration on the order of 1021 cm-3. KCu7P3 is chemically stable in ambient conditions, as well as in aqueous neutral and acidic solutions.
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U2 - 10.1021/acs.inorgchem.9b01336
DO - 10.1021/acs.inorgchem.9b01336
M3 - Article
VL - 58
SP - 10201
EP - 10208
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 15
ER -