Introduction to the Physics of Diluted Magnetic Semiconductors

ISBN-13: 9783642266737 / Angielski / Miękka / 2013 / 469 str.

Jan A. Gaj; Jacek Kossut

Opis

Diluted magnetic semiconductors, or semimagnetic semiconductors, seemed for a while to be one of those research topics whose glory (i. e., the period of most ext- sive research) belongedalready to the past. This particularlyapplied to "traditional" diluted magnetic semiconductors, i. e., substitutional alloys of either II-VI or IV-VI semiconductors with transition metal ions. Fortunately, a discovery, in the beg- ning of the nineties 1,2], of ferromagnetic ordering in III-V DMSs with critical temperatures reaching 170 K has renewed and greatly intensi ed an interest in those materials. This was, at least partially, related to expectations that their Curie temperatures can be relatively easily brought to room temperature range through a clearly delineatedpath and, partially, due to the great successes, also commercial, of metallic version of spintronics, which earned its founders the Nobel Prize in 2007. The semiconductor version of spintronics has attracted researchers also because of hopes to engage it in efforts to construct quantum information processing devices. While these hopes and expectations are not fully realized yet, the effort is going on. As a goodexampleof recentachievements, new resultson quantumdotsconta- ing a single magnetic ion should be mentioned. A great progress has been achieved in studies of excitonic states in such quantum dots, so far limited to InAs/GaAs 3,4] and CdTe/ZnTe 5,6] material systems and to Manganese as the magnetic ion. Furthermore, in the II-VI QDs, rst results on the optical control of the Mn spin states havebeenexperimentallydemonstrated 7-9]andtheoreticallyanalyzed 10]; the studies of Mn spin dynamics and control in III-V QDs will certainly follow.

Spis treści

Basic Consequences of sp–d and d–d Interactions in DMS.- Optical Spectroscopy of Wide-Gap Diluted Magnetic Semiconductors.- Exchange Interaction Between Carriers and Magnetic Ions in Quantum Size Heterostructures.- Band-Offset Engineering in Magnetic/Non-Magnetic Semiconductor Quantum Structures.- Diluted Magnetic Quantum Dots.- Magnetic Ion–Carrier Interactions in Quantum Dots.- Magnetic Polarons.- Spin and Energy Transfer Between Carriers, Magnetic Ions, and Lattice.- Coherent Spin Dynamics of Carriers and Magnetic Ions in Diluted Magnetic Semiconductors.- Spectroscopy of Spin-Polarized 2D Carrier Gas, Spin-Resolved Interactions.- Quantum Transport in Diluted Magnetic Semiconductors.- Neutron Scattering Studies of Interlayer Magnetic Coupling.

O autorze

Jacek Kossut and Jan Gaj belong to the group of researchers whose early work has put diluted magnetic semiconductors on the map. All contributing authors are prominent scientists who gave continue to give extensive input to each subfield they deal with.

Blurb

The book deals with diluted magnetic semiconductors, a class of materials important to the emerging field of spintronics. In these materials semiconducting properties, both transport and optical, are influenced by the presence of magnetic ions. It concentrates on basic physical mechanisms (e.g. carrier-ion and ion-ion interactions) and resulting phenomena (e.g. magnetic polaron formation and spin relaxation). Introduction to the Physics of Diluted Magnetic Semiconductors is addressed to graduate-level and doctoral students and young researchers entering the field. The authors have been actively involved in the creation of this branch of semiconductor physics.