Studies of zinc-blende type MnAs thin films grown on InP(001) substrates by XRD

Oomae, Hiroto; Irizawa, S.; Yang, Jinbo; Toyota, Hideyuki; Kambayashi, Takuya; Uchitomi, Naotaka

doi:10.1016/j.jcrysgro.2012.12.095

Cited by 9 publications

(6 citation statements)

References 16 publications

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“…More recently it has been claimed that c-MnAs can be grown directly on InP(001) alongside the ordinary hexagonal phase. 15,16 We recently demonstrated the growth of c-MnSb within n-MnSb¯lms on GaAs(111), where the large grain sizes of the c-MnSb (! 10 nm) made structural identi¯cation more straightforward.…”

Section: Introductionmentioning

confidence: 99%

EPITAXIAL GROWTH OF CUBIC MnSb ON GaAs AND InGaAs(111)

Bell

Burrows

Hase

et al. 2014

SPIN

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The cubic polymorph of the binary transition metal pnictide (TMP) MnSb, c-MnSb, has been predicted to be a robust half-metallic ferromagnetic (HMF) material with minority spin gap & 1 eV. Here, MnSb epilayers are grown by molecular beam epitaxy (MBE) on GaAs and In 0:5 Ga 0:5 As(111) substrates and analyzed using synchrotron radiation X-ray di®raction. We¯nd polymorphic growth of MnSb on both substrates, where c-MnSb co-exists with the ordinary niccolite n-MnSb polymorph. The grain size of the c-MnSb is of the order of tens of nanometer on both substrates and its appearance during MBE growth is independent of the very di®erent epitaxial strain from the GaAs (3.1%) and In 0:5 Ga 0:5 As (0.31%) substrates.

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Section: Introductionmentioning

confidence: 99%

EPITAXIAL GROWTH OF CUBIC MnSb ON GaAs AND InGaAs(111)

Bell

Burrows

Hase

et al. 2014

SPIN

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“…This generates a 100% spin-polarized current that is generated around the Fermi level. A way to obtain the half-metal property is by growing epitaxially ferromagnetic (FM) materials onto a semiconductor substrate, for example, the III–V semiconductor family. − …”

Section: Introductionmentioning

confidence: 99%

“…However, halfmetallicity remains. Oomae et al 12,13 reported the epitaxial growth of MnAs, an FM material, onto the InP (001) surface.…”

Section: ■ Introductionmentioning

confidence: 99%

Evidence of Half-Metallicity in the AlP/CrP (001) Interface: A First-Principles Study

Sanchez-Ovalle,

Martınez-Guerra,

Takeuchi

et al. 2024

ACS Appl. Electron. Mater.

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The structural, electronic, and magnetic properties of the epitaxial growth of zinc-blende CrP onto the AlP (001) surface are investigated by first-principles spin-polarized calculations. Early stages of the epitaxial growth are investigated by the deposit of a Cr monolayer onto the Al and P-terminated surfaces. The results show that the deposit onto the P−T surface is feasible, with the surface acquiring antiferromagnetic characteristics. Once two CrP layers are deposited, the system becomes ferromagnetic. Also, the surface displays a halfmetallic property, which is preserved when the interface is well defined. The thermodynamic stability of the initial stages of the epitaxial growth and the subsequent formation of the interface are investigated by the surface and interface formation energy formalisms. Our results show that the interface is stable under Al-rich and Cr-poor conditions. At the same time, five AlP (001) surface reconstructions are stable in the rest of the chemical potential region, as previously reported. We also calculated the Curie temperature, finding a value of 743 K. Our results demonstrate that the epitaxial growth of the zinc-blende CrP onto the AlP (001) substrates is feasible, and the properties of the CrP/AlP(001) system are suitable for implementation in spintronic devices that operate at room temperature.

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“…Earul Islam and Akibori grew MnAs on InAs(1 1 1) B virtual substrates (grown on GaAs) [13] and fabricated a lateral spin valve showing a room temperature spin injection efficiency of approximately 8.5% and spin diffusion length of 0.7 µm [14]. Oomae et al grew MnAs directly on InP, with the presence of the fully spinpolarized cubic B3 polymorph reported [15]. MnSb has been grown on 1 As virtual substrates [16], a system for which a good lattice match can be achieved, and co-existence of cubic and hexagonal MnSb polymorphs was shown.…”

Section: Introductionmentioning

confidence: 99%