Molecular design toward spin-polarized nano-wire: oligomer model study

AbstractThis article is based on a presentation on organic-based magnets given as part of Symposium X—Frontiers of Materials Research on December 4, 2002, at the 2002 Materials Research Society Fall Meeting in Boston. The advent of organic-based magnets opened the opportunity for tuning magnetic properties by molecular design and the discovery of new phenomena that rely on the internal structure of the molecules that make up these magnets. In the past 18 years, numerous classes of organic-based ferromagnets, ferrimagnets, and spin glasses (spins essentially frozen in place without long-range order) have been reported. These materials have magnetic ordering temperatures ranging from <1 K to above room temperature and demonstrate many of the magnetic properties associated with conventional magnets. This article concentrates on new phenomena that are unique to organic-based magnets. Three of these effects—“high-temperature” light-induced magnetism, spin-polarized magnetic organic semiconductors with the potential for spintronics, and the development of fractal magnetic order—are discussed to illustrate the richness of opportunity in organic-based magnets.

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Spin-polarized voltage probes for helical edge state: A model study

Physica E Low-dimensional Systems and Nanostructures ◽

10.1016/j.physe.2021.115125 ◽

2022 ◽

pp. 115125

Author(s):

Vivekananda Adak ◽

Krishanu Roychowdhury ◽

Sourin Das

Keyword(s):

Edge State ◽

Model Study ◽

Spin Polarized

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Spin-polarized Scanning Electron Microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100176976 ◽

1990 ◽

Vol 48 (4) ◽

pp. 768-769

Author(s):

Kazuyuki Koike ◽

Hideo Matsuyama

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

High Speed ◽

Magnetic Thin Films ◽

Electron Spin Polarization ◽

Acquisition Time ◽

Magnetization Direction ◽

Spin Polarized ◽

Conventional Methods ◽

Scanning Electron

Spin-polarized scanning electron microscopy (spin SEM), where the secondary electron spin polarization is used as the image signal, is a novel technique for magnetic domain observation. Since its first development by Koike and Hayakawa in 1984, several laboratories have extensively studied this technique and have greatly improved its capability for data extraction and its range of applications. This paper reviews the progress over the last few years.Almost all the high expectations initially held for spin SEM have been realized. A spatial resolution of several hundreds angstroms has been attained, which is nearly one order of magnitude higher than that of conventional methods for thick samples. Quantitative analysis of magnetization direction has been performed more easily than with conventional methods. Domain observation of the surface of three-dimensional samples has been confirmed to be possible. One of the drawbacks, a long image acquisition time, has been eased by combining highspeed image-signal processing with high speed scanning, although at the cost of image quality. By using spin SEM, the magnetic structure of a 180 degrees surface Neel wall, magnetic thin films, multilayered films, magnetic discs, etc., have been investigated.

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Molecular Design and Applications of Photofunctional Polymers and Materials

10.1039/9781849735766 ◽

2012 ◽

Cited By ~ 4

Keyword(s):

Molecular Design

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Chemometric Methods in Molecular Design Edited by Han van de Waterbeemd. VCH, Weinheim. 1995. xix + 359 pp. 17.5 × 24.5 cm. ISBN 3-527-30044-9. DM 188.00.

Journal of Medicinal Chemistry ◽

10.1021/jm960476m ◽

1996 ◽

Vol 39 (20) ◽

pp. 4133-4133 ◽

Cited By ~ 5

Author(s):

Alan H. Katz

Keyword(s):

Molecular Design ◽

Chemometric Methods

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Social Desirability in Personality Inventories

Journal of Individual Differences ◽

10.1027/1614-0001/a000138 ◽

2014 ◽

Vol 35 (3) ◽

pp. 144-157 ◽

Cited By ~ 12

Author(s):

Martin Bäckström ◽

Fredrik Björklund

Keyword(s):

Social Desirability ◽

Big Five ◽

Work Performance ◽

Factor Model ◽

Five Factor Model ◽

Peer Ratings ◽

Personality Inventories ◽

Model Study ◽

The Difference ◽

New Variables

The difference between evaluatively loaded and evaluatively neutralized five-factor inventory items was used to create new variables, one for each factor in the five-factor model. Study 1 showed that these variables can be represented in terms of a general evaluative factor which is related to social desirability measures and indicated that the factor may equally well be represented as separate from the Big Five as superordinate to them. Study 2 revealed an evaluative factor in self-ratings and peer ratings of the Big Five, but the evaluative factor in self-reports did not correlate with such a factor in ratings by peers. In Study 3 the evaluative factor contributed above the Big Five in predicting work performance, indicating a substance component. The results are discussed in relation to measurement issues and self-serving biases.

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