scholarly journals Two-dimensional, conductive niobium and molybdenum metal–organic frameworks

2020 ◽  
Vol 11 (26) ◽  
pp. 6690-6700
Author(s):  
Michael E. Ziebel ◽  
Justin C. Ondry ◽  
Jeffrey R. Long
Keyword(s):  
Magnetic Properties ◽  
Metal Organic Frameworks ◽  
Orbit Coupling ◽  
Redox Activity ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Molybdenum Metal ◽  
Metal Organic

Incorporation of Nb and Mo into conductive metal–organic frameworks enables utilization of the enhanced covalency, redox activity, and spin–orbit coupling of late-row metals to improve the transport and magnetic properties of these materials.

scholarly journals Electronic and magnetic properties of two dimensional crystals

2021 ◽  
Author(s):  
◽  
Hani Hatami
Keyword(s):  
Magnetic Properties ◽  
Transport Properties ◽  
Energy Levels ◽  
Bilayer Graphene ◽  
Orbit Coupling ◽  
Monolayer Graphene ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Electronic And Magnetic Properties

<p>In the last few years, two dimensional crystals have become available for experimental studies. Good examples of such systems are monolayers and bilayers of graphene and monolayers of transition metal dichalcogenides such as MoS₂ and WSe₂. The availability of two dimensional crystals has encouraged physicists to study the electronic and magnetic properties of such systems. This thesis adds to the theoretical knowledge about electronic and magnetic properties of two dimensional crystals with the focus on graphene and MoS₂.  As a general theme in this thesis, we calculate how in general these systems interact with electric and magnetic fields and what their response is to such stimuli. In particular, we have studied the response of monolayer graphene to an in-plane electric field. We have also looked at spin-orbit coupling effects that arise from applying perpendicular or in-plane external electric fields, especially their consequences for transport properties of bilayer graphene. We investigated the electronic properties of charge carriers confined in a mesoscopic ring structure using a gate voltage in bilayer graphene. We also showed how spin-orbit coupling can affect the electrical properties of such rings. We found how spin-orbit coupling can affect the transport properties in bilayer graphene. We also investigated the RKKY or indirect exchange coupling between magnetic moments in monolayer MoS₂ through calculating wave vector dependent spin susceptibility.  We examined the electronic properties of electrons and holes confined electrostatically into a bilayer graphene ring. We presented an analytical solution for finding energy levels in the ring. We showed that the magnetic field dependence of the lowest energy level with fixed angular momentum in bilayer graphene rings, in contrast to usual semiconductor quantum rings, is not parabolic but displays an asymmetric “Mexican hat“. We found that introducing spin-orbit coupling in the ring can flatten this Mexican hat.  We studied the effect of an orbital Rashba type effect, induced by an in-plane electric field in monolayer graphene. Using perturbation theory, we showed that this term can affect the energy levels in a crossed electric and magnetic field such that the electron and hole levels repel each other. We calculated the AC transport of monolayer graphene in the linear-response regime and showed that taking the orbital Rashba term into account casts doubt on the universality of the minimum conductivity of monolayer graphene.  We studied the effect of spin-orbit coupling in transport properties of bilayer graphene systems by calculating tunnelling through npn and np junctions. We showed that at sufficiently large spin-orbit strength, normal transmission through a barrier which is forbidden in bilayer graphene becomes finite. We predict that in a weak Rashba spin-orbit regime, outgoing electrons show signals which are spin polarized. We also showed that considering spin-orbit coupling only in the barrier of an npn junction can invert the spin of the incoming electrons.  Finally, we obtained analytical expressions for the wave vector-dependent static spin susceptibility of monolayer transition metal dichalcogenides, considering both the electron-doped and hole-doped cases. These results are then applied to the calculations of physical observables of monolayer MoS₂. We claculated that the hole-mediated RKKY exchange interaction for in-plane impurity-spin components decays with a different power law from what is expected for a two-dimensional Fermi liquid. In contrast, we calculated that the out-of-plane spin response shows the conventional long-range behaviour.</p>

scholarly journals Role of Spin–Orbit Coupling in Long Range Energy Transfer in Metal–Organic Frameworks

2020 ◽  
Vol 142 (48) ◽  
pp. 20434-20443
Author(s):  
Arnab Chakraborty ◽  
Stefan Ilic ◽  
Meng Cai ◽  
Bradley J. Gibbons ◽  
Xiaozhou Yang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Long Range ◽  
Metal Organic Frameworks ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Metal Organic

Topologically trivial states induced by strong spin-orbit coupling and Chern insulators in doped X(C21N3H15)   (X=Ta , Hf) metal-organic frameworks

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Jiayong Zhang ◽  
Bao Zhao ◽  
Tong Zhou ◽  
Yang Xue ◽  
Yu Fang ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Chern Insulators ◽  
Metal Organic ◽  
Strong Spin

scholarly journals Electronic and magnetic properties of two dimensional crystals

2021 ◽  
Author(s):  
◽  
Hani Hatami
Keyword(s):  
Magnetic Properties ◽  
Transport Properties ◽  
Energy Levels ◽  
Bilayer Graphene ◽  
Orbit Coupling ◽  
Monolayer Graphene ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Electronic And Magnetic Properties

<p>In the last few years, two dimensional crystals have become available for experimental studies. Good examples of such systems are monolayers and bilayers of graphene and monolayers of transition metal dichalcogenides such as MoS₂ and WSe₂. The availability of two dimensional crystals has encouraged physicists to study the electronic and magnetic properties of such systems. This thesis adds to the theoretical knowledge about electronic and magnetic properties of two dimensional crystals with the focus on graphene and MoS₂.  As a general theme in this thesis, we calculate how in general these systems interact with electric and magnetic fields and what their response is to such stimuli. In particular, we have studied the response of monolayer graphene to an in-plane electric field. We have also looked at spin-orbit coupling effects that arise from applying perpendicular or in-plane external electric fields, especially their consequences for transport properties of bilayer graphene. We investigated the electronic properties of charge carriers confined in a mesoscopic ring structure using a gate voltage in bilayer graphene. We also showed how spin-orbit coupling can affect the electrical properties of such rings. We found how spin-orbit coupling can affect the transport properties in bilayer graphene. We also investigated the RKKY or indirect exchange coupling between magnetic moments in monolayer MoS₂ through calculating wave vector dependent spin susceptibility.  We examined the electronic properties of electrons and holes confined electrostatically into a bilayer graphene ring. We presented an analytical solution for finding energy levels in the ring. We showed that the magnetic field dependence of the lowest energy level with fixed angular momentum in bilayer graphene rings, in contrast to usual semiconductor quantum rings, is not parabolic but displays an asymmetric “Mexican hat“. We found that introducing spin-orbit coupling in the ring can flatten this Mexican hat.  We studied the effect of an orbital Rashba type effect, induced by an in-plane electric field in monolayer graphene. Using perturbation theory, we showed that this term can affect the energy levels in a crossed electric and magnetic field such that the electron and hole levels repel each other. We calculated the AC transport of monolayer graphene in the linear-response regime and showed that taking the orbital Rashba term into account casts doubt on the universality of the minimum conductivity of monolayer graphene.  We studied the effect of spin-orbit coupling in transport properties of bilayer graphene systems by calculating tunnelling through npn and np junctions. We showed that at sufficiently large spin-orbit strength, normal transmission through a barrier which is forbidden in bilayer graphene becomes finite. We predict that in a weak Rashba spin-orbit regime, outgoing electrons show signals which are spin polarized. We also showed that considering spin-orbit coupling only in the barrier of an npn junction can invert the spin of the incoming electrons.  Finally, we obtained analytical expressions for the wave vector-dependent static spin susceptibility of monolayer transition metal dichalcogenides, considering both the electron-doped and hole-doped cases. These results are then applied to the calculations of physical observables of monolayer MoS₂. We claculated that the hole-mediated RKKY exchange interaction for in-plane impurity-spin components decays with a different power law from what is expected for a two-dimensional Fermi liquid. In contrast, we calculated that the out-of-plane spin response shows the conventional long-range behaviour.</p>

Ab initio study including spin–orbit coupling of the electronic band structure and magnetic properties of h-HoMnO3

2021 ◽  
Author(s):  
A. Chadli ◽  
B. Lagoun ◽  
L. Aissani ◽  
Y. Berhail ◽  
G. Manca ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Band Structure ◽  
Ab Initio ◽  
Electronic Band Structure ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Ab Initio Study ◽  
Electronic Band

scholarly journals Spin–Orbit Coupling Is the Key to Promote Asynchronous Photoinduced Charge Transfer of Two-Dimensional Perovskites

JACS Au ◽  
2021 ◽  
Author(s):  
Jia-Jia Yang ◽  
Wen-Kai Chen ◽  
Xiang-Yang Liu ◽  
Wei-Hai Fang ◽  
Ganglong Cui
Keyword(s):  
Charge Transfer ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Photoinduced Charge Transfer ◽  
Photoinduced Charge

Effects of spin-orbit coupling on magnetic properties of discrete and extended magnetic systems

2008 ◽  
Vol 29 (13) ◽  
pp. 2187-2209 ◽  
Author(s):  
Dadi Dai ◽  
Hongjun Xiang ◽  
Myung-Hwan Whangbo
Keyword(s):  
Magnetic Properties ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Magnetic Systems

scholarly journals Two-dimensional magnetoexcitons in the presence of spin-orbit coupling

2008 ◽  
Vol 77 (12) ◽  
Author(s):  
Oleg Olendski ◽  
Quinton L. Williams ◽  
Tigran V. Shahbazyan
Keyword(s):  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional

Optical response of a two dimensional quantum ring in presence of Rashba spin orbit coupling

2016 ◽  
Vol 119 (7) ◽  
pp. 073101 ◽  
Author(s):  
Sukirti Gumber ◽  
Monica Gambhir ◽  
Pradip Kumar Jha ◽  
Man Mohan
Keyword(s):  
Optical Response ◽  
Orbit Coupling ◽  
Quantum Ring ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Rashba Spin

Anomalous spin–orbit coupling in high-density two-dimensional electron gas confined in InGaAs/InAlAs quantum well

2012 ◽  
Vol 152 (12) ◽  
pp. 1042-1046 ◽  
Author(s):  
K.H. Gao ◽  
T. Lin ◽  
L.M. Wei ◽  
X.Z. Liu ◽  
X. Chen ◽  
...  
Keyword(s):  
Quantum Well ◽  
Electron Gas ◽  
High Density ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Dimensional Electron Gas
Sign in / Sign up

Export Citation Format

Share Document