Sökning: WFRF:(Kong Xiangru)
> (2020) >
Monolayer 1T-LaN2 :
Monolayer 1T-LaN2 : Dirac spin-gapless semiconductor of p-state and Chern insulator with a high Chern number
-
- Li, Linyang (författare)
- Hebei Univ Technol, Sch Sci, Tianjin 300401, Peoples R China.;Univ Antwerp, Dept Phys, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
-
- Kong, Xiangru (författare)
- Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
-
- Chen, Xin, 1992- (författare)
- Uppsala universitet,Materialteori
-
visa fler...
-
- Li, Jia (författare)
- Hebei Univ Technol, Sch Sci, Tianjin 300401, Peoples R China.
-
- Sanyal, Biplab (författare)
- Uppsala universitet,Materialteori
-
- Peeters, Francois M. (författare)
- Univ Antwerp, Dept Phys, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.;Yunnan Univ, Dept Phys & Astron, Key Lab Quantum Informat Yunnan Prov, Kunming 650091, Yunnan, Peoples R China.
-
visa färre...
-
Hebei Univ Technol, Sch Sci, Tianjin 300401, Peoples R China;Univ Antwerp, Dept Phys, Groenenborgerlaan 171, B-2020 Antwerp, Belgium. Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. (creator_code:org_t)
- AMER INST PHYSICS, 2020
- 2020
- Engelska.
-
Ingår i: Applied Physics Letters. - : AMER INST PHYSICS. - 0003-6951 .- 1077-3118. ; 117:14
- Relaterad länk:
-
https://repository.u...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Two-dimensional transition-metal dinitrides have attracted considerable attention in recent years due to their rich magnetic properties. Here, we focus on rare-earth-metal elements and propose a monolayer of lanthanum dinitride with a 1T structural phase, 1T-LaN2. Using first-principles calculations, we systematically investigated the structure, stability, magnetism, and band structure of this material. It is a flexible and stable monolayer exhibiting a low lattice thermal conductivity, which is promising for future thermoelectric devices. The monolayer shows the ferromagnetic ground state with a spin-polarized band structure. Two linear spin-polarized bands cross at the Fermi level forming a Dirac point, which is formed by the p atomic orbitals of the N atoms, indicating that monolayer 1T-LaN2 is a Dirac spin-gapless semiconductor of p-state. When the spin-orbit coupling is taken into account, a large nontrivial indirect bandgap (86/354meV) can be opened at the Dirac point, and three chiral edge states are obtained, corresponding to a high Chern number of C=3, implying that monolayer 1T-LaN2 is a Chern insulator. Importantly, this kind of band structure is expected to occur in more monolayers of rare-earth-metal dinitride with a 1T structural phase.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas