Larmor precession of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Mn</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>moments initiated by the exchange field of photoinjected carriers in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi><mml:mi mathvariant="normal">d</mml

Akimoto, R.; Ando, Koji; Sasaki, Fumio; Kobayashi, S.; Tani, Tadaaki

doi:10.1103/physrevb.57.7208

Cited by 52 publications

(21 citation statements)

References 20 publications

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“…This dephasing suggests the non-instantaneous decay of the transient field created by the holes [127] and allows for an indirect determination of the hole spin relaxation time [87].…”

Section: Magnetization Dynamics Magnetization Precession Induced By Amentioning

confidence: 99%

Diluted Magnetic Semiconductors: Basic Physics and Optical Properties

Cibert

Scalbert

2008

Springer Series in Solid-State Sciences

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Diluted Magnetic Semiconductors (DMS) form a new class of magnetic materials, which fill the gap between ferromagnets and semiconductors [1]. In the early literature these DMS were often named semimagnetic semiconductors, because they are midway between nonmagnetic and magnetic materials. DMS are semiconductor compounds (A 1−x M x B) in which a fraction x of the cations is substituted by magnetic impurities, thereby introducing magnetic properties into the host semiconductor AB. This makes a great difference with semiconducting ferromagnets, i.e., ferromagnetic materials exhibiting semiconductor-like transport properties, which have been known for some time (see a review in [2]). A DMS is expected to retain most of its classical semiconducting properties, and to offer the opportunity of a full integration into heterostructures, including heterostructures with the host material. The great challenge and ultimate goal of the research in this field is to obtain DMS ferromagnetic at room temperature, which can be integrated in semiconductor heterostructures for electronic or optoelectronic applications. This is one of the key issues for the advent of spintronics devices.Among the principal DMS families, II-VI and, to a less extent, III-V based DMS, with Mn as the magnetic impurity, are best understood. For this reason the present chapter will be mainly based on these compounds to introduce the wellestablished basic physics of DMS. More details can be found in review papers such as [3][4][5]. Some issues related to work in progress, generally on novel materials, will be also discussed but only briefly.

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“…This dephasing suggests the non-instantaneous decay of the transient field created by the holes [127] and allows for an indirect determination of the hole spin relaxation time [87].…”

Section: Magnetization Dynamics Magnetization Precession Induced By Amentioning

confidence: 99%

Diluted Magnetic Semiconductors: Basic Physics and Optical Properties

Cibert

Scalbert

2008

Springer Series in Solid-State Sciences

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“…3.4) It allows one to describe the anisotropic spin dynamics of the photoexcited holes [13][14][15][16][17][18][19][20][21] (see Chap. 10), the anisotropic properties of magnetic polarons [17][18][19], (see Chap.…”

Section: Exchange Hamiltonian For Heavy and Light Holes At The Bottommentioning

confidence: 99%

“…Acting on the magnetic ion it causes multiple spin flip processes for the magnetic ion spins. Different modifications of this experiment as well as the theoretical calculations were presented in later papers [15][16][17][18][19][20][21]. The detailed experimental studies and the theoretical analysis with account taken for the small but nonzero components of the hole g-factor in the quantum well plane were performed in [16].…”

Section: Spin Dynamics For Carriers With Anisotropic G-factormentioning

confidence: 99%

Exchange Interaction Between Carriers and Magnetic Ions in Quantum Size Heterostructures

Merkulov

Rodina

2010

Introduction to the Physics of Diluted Magnetic Semiconductors

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A very general theoretical discussion of the values of sp d exchange constants is given starting from symmetry properties of diluted magnetic semiconductors. Complex structure of the valence band is fully taken into account with interacting heavy and light holes as well as spin-orbit split-off states kept in the consideration. The form of the Hamiltonian is derived and shown to be, in a general case, anisotropic. A series of approximations is made that reduces the Hamiltionian to a simple form introduced in Chap. 1. Specific cases of two-dimensional quantum wells and zero-dimensional spherical quantum dots are considered. Finally, the role of sp d interaction in spin relaxation processes is discussed. IntroductionIn semiconductor nano-heterostructures the potential energy, that a charge carrier experiences, changes on the length scale that is comparable to the characteristic wavelength of the carriers. In such a case, the quantum-size effects play a dominant role. The quantum confinement significantly affects the exchange interaction between carriers and localized spins of the magnetic ions. The effective exchange Hamiltonian becomes anisotropic because the presence of interfaces reduces the symmetry. In narrow structures with high potential barriers, the quantum confinement changes the ground state energy of the carriers to such an extent that the changes of the ground energy can be comparable to the band gap energy of a bulk

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“…Interestingly, as shown in Figure 25, a slower weak θ K oscillation appears superimposed. It is due to the Mn 2+ spins being subject to additional Akimoto et al, 1998, with permission from the American Physical Society.  1998 tipping owing to the HH exchange field (Akimoto et al, 1998).…”

Section: Magneto-optical Semiconductorsmentioning

confidence: 99%

Magneto‐optical Materials

Kleemann¹

2007

Handbook of Magnetism and Advanced Magnetic Materials

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After introducing the concepts of linear and nonlinear magneto‐optics in the visible spectral range, the flourishing field of X‐ray circular and linear dichroism is briefly discussed with pertinent examples. The experimental part starts with the basic idea of magneto‐optic ellipsometry and then focuses on the development of new experimental techniques like vector magneto‐optical Kerr effect (MOKE), diffracted MOKE, dynamic MOKE, nonlinear MOKE, and magneto‐optic X‐ray microscopy. Specified and timely material aspects are finally discussed under the topics magneto‐optical storage materials, magnetic semiconductors, antiferromagnets, and magnetophotonic crystals. It is stressed that the magneto‐optical probe is indispensable in the limits of very short times ( femtomagnetism ), that it plays a leading role in the development of spintronics , and that nano‐ and microstructured magnetic materials have opened the new field of magnetophotonics .

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Larmor precession ofMn2+moments initiated by the exchange field of photoinjected carriers inCd

Cited by 52 publications

References 20 publications

Diluted Magnetic Semiconductors: Basic Physics and Optical Properties

Diluted Magnetic Semiconductors: Basic Physics and Optical Properties

Exchange Interaction Between Carriers and Magnetic Ions in Quantum Size Heterostructures

Magneto‐optical Materials

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