Magnetoelectronic properties of GaN codoped with (V, Mn) impurities for spintronic devices: Ab-initio and Monte Carlo studies

Bouziani, I.Univ Moulay Ismail, Fac Sci, Lab Phys Mat & Modelisat Syst LP2MS, Phys Dept,Unite Associee CNRST URAC 08, BP 11201, Meknes, Morocco (författare)

Magnetoelectronic properties of GaN codoped with (V, Mn) impurities for spintronic devices : Ab-initio and Monte Carlo studies

In this work, we investigate the Magnetoelectronic properties of (V, Mn) codoped GaN using first principles calculations (FPCs) for the spintronic applications. We have obtained the ferromagnetic behavior in (Ga, V)N codoped with Mn atoms, which is believed to be caused by the double exchange mechanism. Moreover, it is observed that our system is halfmetallic at the Fermi level, with 100% spin polarization. The total magnetic moment of (V, Mn) codoped GaN is mainly originated from the V and Mn atoms, and the magnetic moment of V impurities rises with the concentration of V atoms while keeping constant that of the Mn atoms. In addition to that, the exchange coupling is obtained from FPCs and using the Ising model. The Monte Carlo method founded on the Heat Bath algorithm support our FPCs, by investigating the influence of the addition of Mn impurities to (Ga, V)N compound on the critical temperature T-C(MC), the magnetization per site M, the magnetic susceptibility chi and the specific heat C-V. We have found that T-C(MC) is above room temperature as well as the stability of the ferromagnetic state in (Ga, V)N becomes more important after the inclusion of the Manganese.

Benhouria, Y.Univ Moulay Ismail, Fac Sci, Lab Phys Mat & Modelisat Syst LP2MS, Phys Dept,Unite Associee CNRST URAC 08, BP 11201, Meknes, Morocco (författare)
Essaoudi, I.Uppsala universitet,Materialteori,Univ Moulay Ismail, Fac Sci, Lab Phys Mat & Modelisat Syst LP2MS, Phys Dept,Unite Associee CNRST URAC 08, BP 11201, Meknes, Morocco,Condensed Matter Theory Group (författare)
Ainane, AbdelmajidUppsala universitet,Materialteori,Univ Moulay Ismail, Fac Sci, Lab Phys Mat & Modelisat Syst LP2MS, Phys Dept,Unite Associee CNRST URAC 08, BP 11201, Meknes, Morocco;Max Planck Inst Phys Complexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany,Condensed Matter Theory Group(Swepub:uu)abdai143 (författare)
Ahuja, Rajeev,1965-Uppsala universitet,Materialteori,Condensed Matter Theory Group(Swepub:uu)rajeeva (författare)
Univ Moulay Ismail, Fac Sci, Lab Phys Mat & Modelisat Syst LP2MS, Phys Dept,Unite Associee CNRST URAC 08, BP 11201, Meknes, MoroccoMaterialteori (creator_code:org_t)

Av författaren/redakt...: Bouziani, I.; Benhouria, Y.; Essaoudi, I.; Ainane, Abdelmaj ...; Ahuja, Rajeev, 1 ...

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