Cyclotron resonance in InMnAs and InMnSb ferromagnetic films

Matsuda, Yasuhiro H.; Khodaparast, Giti A.; Shen, R.; Takeyama, S.; Liu, X; Furdyna, J. K.; Wessels, Bruce W.

doi:10.1088/1742-6596/334/1/012056

Cited by 3 publications

(2 citation statements)

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“…Cyclotron resonance measurements on ferromagnetic (In,Mn)Sb and (In,Mn)As (x = 0.02) in high magnetic field (B > 100 T) was explained by Landau level positions calculated from the eight-band kp model for InSb and InAs, respectively, indicating that the itinerant holes reside in the valence band of the host semiconductor (Matsuda et al, 2011).…”

Section: Hole Effective Mass In Iii-v Dmssmentioning

confidence: 99%

Dilute ferromagnetic semiconductors: Physics and spintronic structures

2014

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This review compiles results of experimental and theoretical studies on thin films and quantum structures of semiconductors with randomly distributed Mn ions, which exhibit spintronic functionalities associated with collective ferromagnetic spin ordering. Properties of p-type Mncontaining III-V as well as II-VI, IV-VI, V 2 -VI 3 , I-II-V, and elemental group IV semiconductors are described paying particular attention to the most thoroughly investigated system (Ga,Mn)As that supports the hole-mediated ferromagnetic order up to 190 K for the net concentration of Mn spins below 10%. Multilayer structures showing efficient spin injection and spin-related magnetotransport properties as well as enabling magnetization manipulation by strain, light, electric fields, and spin currents are presented together with their impact on metal spintronics. The challenging interplay between magnetic and electronic properties in topologically trivial and nontrivial systems is described, emphasizing the entangled roles of disorder and correlation at the carrier localization boundary. Finally, the case of dilute magnetic insulators is considered, such as (Ga,Mn)N, where low temperature spin ordering is driven by short-ranged superexchange that is ferromagnetic for certain charge states of magnetic impurities.

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Section: Hole Effective Mass In Iii-v Dmssmentioning

confidence: 99%

Dilute ferromagnetic semiconductors: Physics and spintronic structures

2014

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“…Several groups have reported that the optical conductivity in GaMnAs shows non-Drude-type behavior [13][14][15][16] while InMnAs and InMnSb both clearly show Drude-type conductivity. [17][18][19][20] In addition, a scanning tunneling microscopy study revealed the d-wave envelope function in the acceptor state in GaMnAs. 16 These facts indicate that holes in InMnAs and InMnSb could have different characteristics than holes in GaMnAs.…”

Section: Introductionmentioning

confidence: 99%

Cyclotron resonance in ferromagnetic InMnAs and InMnSb

et al. 2013

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We present experimental and theoretical studies of the magneto-optical properties of p-type In 1−x Mn x As and In 1−x Mn x Sb ferromagnetic semiconductor films in ultrahigh magnetic fields oriented along [001]. Samples were fabricated by molecular beam epitaxy (MBE) and metal-organic vapor phase epitaxy (MOVPE). To model the results, we used an 8-band Pidgeon-Brown model generalized to include the wave vector dependence of the electronic states along k z as well as the s-d and p-d exchange interactions with the localized Mn d electrons. The Curie temperature is taken as an input parameter and the average Mn spin is treated in mean-field theory. We compared Landau level and band structure calculations with observed cyclotron resonance (CR) measurements. While differences between the CR measurements are seen for MBE and MOVPE samples, our calculations indicate that they arise from differences in the carrier densities. In addition, the difference in the carrier densities suggests significantly larger average spin for the MOVPE structures; this fact could be responsible for higher Curie temperatures in this material system.

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Theoretical study on the effects of Mn ion doping and applied magnetic field in (In,Mn)As

Mekuye,

Zerihun

2024

Results in Physics

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Cyclotron resonance in InMnAs and InMnSb ferromagnetic films

Cited by 3 publications

References 10 publications

Dilute ferromagnetic semiconductors: Physics and spintronic structures

Dilute ferromagnetic semiconductors: Physics and spintronic structures

Cyclotron resonance in ferromagnetic InMnAs and InMnSb

Theoretical study on the effects of Mn ion doping and applied magnetic field in (In,Mn)As

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