빔라인부에서 University of Saskatchewan 의 Dr. Gapsoo Chang을 모시고 세미나가 있습니다.

style=MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center
align=left>style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>빔라인부에서 University of Saskatchewan 의 Dr. Gapsoo Chang을 모시고  아래와 같이 세미나를
갖고자 합니다.

관심있는 분들의 많은  참석 부탁드립니다.

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align=left>style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>1.제목:
style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>Probing
the defect effect on the magnetism in diluted magnetic semiconductors with soft
x-ray fluorescence style=mso-bookmark: OLE_LINK2>

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장소 : 가속기연구소 저장링동 217호

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align=left>style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>3.일시
: 2007.05.17 (목) 15:00

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align=left>style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>4.연락처:
김봉수 279-1535

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align=center>style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>-

style=MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center
align=center>style=FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 10.0pt>Probing
the defect effect on the magnetism in diluted magnetic semiconductors with soft
x-ray fluorescence style=mso-bookmark: OLE_LINK2>

style=MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center
align=center>style=mso-bookmark: OLE_LINK2>style=FONT-SIZE: 14pt; COLOR: windowtext; FONT-FAMILY: Times New Roman; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 돋움; mso-fareast-language: KO>

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align=center>style=mso-bookmark: OLE_LINK2>lang=DE
style=FONT-SIZE: 12pt; LINE-HEIGHT: 200%; FONT-FAMILY: Times New Roman; mso-fareast-font-family: 한컴돋움; mso-ansi-language: DE>Gapstyle=FONT-SIZE: 12pt; LINE-HEIGHT: 200%; FONT-FAMILY: Times New Roman; mso-fareast-font-family: 한컴돋움; mso-fareast-language: KO; mso-ansi-language: DE>
Soo Chang

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align=center>style=FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman; mso-fareast-font-family: 한컴돋움>Department
of style=FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman; mso-fareast-font-family: 한컴돋움; mso-fareast-language: KO>Physics
and Engineering Physicsstyle=FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman; mso-fareast-font-family: 한컴돋움>,
University of Saskatchewanstyle=FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman; mso-fareast-font-family: 한컴돋움; mso-fareast-language: KO>,
Saskatoon, SK S7N 5E2

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style=TEXT-JUSTIFY: inter-ideograph; MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 150%; TEXT-ALIGN: justify; mso-layout-grid-align: none>face=Times New Roman>style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%>Spin-electronics (or spintronics)
utilizing both spin-dependent and charge-dependent electric currents has been
intensively exploited as a promising alternative to the semiconductor technology
relying only on the binary states of electric current (bit of 1 or 0). In order
to realize practical spintronic devices, the style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: 고딕,한컴돋움>primary
requirement is to develop style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-ansi-language: EN-CA>new
ferromagnetic semiconductors which allow a current of spin-polarized electrons
to be generated and controlled, and preserve the spin-coherence over long time
and distance in an existing semiconductor structure.style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: 바탕>
style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%>Therefore
making semiconductors ferromagnetic has been a long-standing goal in the area of
semiconductor-based spintronics. style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: 돋움>One of
widely used approaches is to dope magnetic elements such as Mn, Co, and Fe into
conventional semiconductors. However, despite enormous research efforts devoted
to incorporate diluted magnetic semiconductors (DMSs), a lack of consistency in
experimental results has brought debates about the origin of ferromagnetism in
DMSs and the demand of knowledge in local environment around magnetic impurities
has increased. In this research,style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: Times New Roman>
style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: 돋움>we have
employed synchrotron-based xstyle=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: Times New Roman>-ray
style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: 돋움>absorption/emission
spectroscopy to extensively investigate the local style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: Times New Roman>electronic
structure of style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: 돋움>magnetic
dopants and to shed light on the origin of ferromagnetism in the DMS materials.
style=FONT-SIZE: 12pt; LINE-HEIGHT: 150%; mso-fareast-font-family: 고딕,한컴돋움>Recent
experimental results of various magnetic semiconductors will be presented
together with detailed discussion and analysis.