JP2004282067A - ハイブリッド型磁性体/半導体スピン素子及びその製造方法 - Google Patents
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- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
- G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers
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- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
- H01F10/193—Magnetic semiconductor compounds
- H01F10/1936—Half-metallic, e.g. epitaxial CrO2 or NiMnSb films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
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Abstract
【解決手段】半導体基板と、該半導体基板の上面に磁性体により形成されたソース領域と、該ソース領域からスピン分極されたキャリアが注入される、前記半導体基板の上面に形成されたスピンチャンネル領域と、該スピンチャンネル領域を通過したスピンが検出される、前記半導体基板の上面に磁性体により形成されたドレーン領域と、を含むハイブリッド型磁性体/半導体スピン素子である。
【選択図】 図5A
Description
Claims (15)
- 半導体基板と、
該半導体基板の上面に磁性体により形成されたソース領域と、
該ソース領域からスピン分極されたキャリアが注入される、前記半導体基板の上面に形成されたスピンチャンネル領域と、
該スピンチャンネル領域を通過したスピンが検出される、前記半導体基板の上面に磁性体により形成されたドレーン領域と、
を含むことを特徴とするハイブリッド型磁性体/半導体スピン素子。 - 前記磁性体が、大きなスピン分極を有する磁性金属であり、Fe、Co、Ni、FeCo及びNiFeから選択される一つである、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記磁性体が、GaMnAs、InMnAs、GeMn及びGaMnNから選択される一つである、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記磁性体がCrO2のような100%のスピン分極を有する半金属である、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記半導体がSi、GaAs、InAs及びGeから選択される一つである、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記スピンチャンネル領域がSOIまたは化合物半導体の二次元電子ガス層である、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記ソース領域及びドレーン領域が5〜1000nmの範囲の線幅を有する、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記ソース領域とドレーン領域間の間隔が10nm〜1μmの範囲である、請求項7記載のハイブリッド型磁性体/半導体スピン素子。
- 前記ソース領域及びドレーン領域が、互いに異なる線幅を有し、スピンスイッチングが所定の磁界範囲で反平行である、請求項7記載のハイブリッド型磁性体/半導体スピン素子。
- 前記ソース領域及びドレーン領域が形成された半導体基板の表面が10〜500nmの範囲の深さにエッチングされている、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記磁性体と半導体間の接触抵抗がオームまたはショットキーである、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- 前記磁性体と半導体間に、0.5〜2nmの範囲の厚さのAl2O3またはAlNが中間膜として挿入され、それによりトンネリングによるスピン注入が発生する、請求項1記載のハイブリッド型磁性体/半導体スピン素子。
- ゲートと、該ゲートの下部に形成された絶縁層と、該絶縁層の左右側に磁性体により形成されたソース領域及びドレーン領域と、前記絶縁層の下部に形成された二次元電子ガス層と、を含み、
前記ゲートに印加される電圧により、スピン分極されたキャリアの歳差運動を制御するようにスピン分極電界効果トランジスタに適用することを特徴とするハイブリッド型磁性体/半導体スピン素子。 - 半導体基板にキャリアが移動するチャンネル領域を形成する段階と、
前記チャンネル領域の左右の半導体基板の表面を10〜500nmの範囲の深さにエッチングする段階と、
前記チャンネル領域の左右のエッチングされた領域に磁性体によりソース領域及びドレーン領域を形成する段階と、
前記磁性体のソース領域及びドレーン領域に磁場を加えながら熱処理を行う段階と、
を順次行うことを特徴とするハイブリッド型磁性体/半導体スピン素子の製造方法。 - 前記熱処理段階が、磁性体の長軸方向に0.5〜5kOeの磁場を加えながら、真空雰囲気下で100〜500℃の温度で10〜60分間熱処理を行う、請求項14記載のハイブリッド型磁性体/半導体スピン素子の製造方法。
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KR10-2003-0016170A KR100511077B1 (ko) | 2003-03-14 | 2003-03-14 | 하이브리드형 자성체/반도체 스핀소자 및 그 제조방법 |
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US (1) | US7084468B2 (ja) |
EP (1) | EP1458031A3 (ja) |
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Cited By (3)
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KR100953532B1 (ko) * | 2007-10-09 | 2010-04-21 | 한국과학기술연구원 | 나노자성체/자성반도체 하이브리드형 스핀 소자 및 그 제조방법 |
JP2010238956A (ja) * | 2009-03-31 | 2010-10-21 | Tdk Corp | スピン伝導デバイス |
JP2010239011A (ja) * | 2009-03-31 | 2010-10-21 | Tdk Corp | スピン注入構造及びそれを用いたスピン伝導デバイス |
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US7411235B2 (en) * | 2004-06-16 | 2008-08-12 | Kabushiki Kaisha Toshiba | Spin transistor, programmable logic circuit, and magnetic memory |
KR100697779B1 (ko) * | 2005-03-05 | 2007-03-20 | 한국과학기술연구원 | Soi기판을 이용한 하이브리드형 자성체/반도체 스핀소자및 그 제조방법 |
JP4528660B2 (ja) * | 2005-03-31 | 2010-08-18 | 株式会社東芝 | スピン注入fet |
US7956608B1 (en) * | 2005-06-27 | 2011-06-07 | Northwestern University | Method of using group III-V ferromagnetic/non-magnetic semiconductor heterojunctions and magnetodiodes |
US7655324B2 (en) * | 2005-09-20 | 2010-02-02 | Sridhar Kasichainula | Electro-magnetic storage device and method |
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US5465185A (en) * | 1993-10-15 | 1995-11-07 | International Business Machines Corporation | Magnetoresistive spin valve sensor with improved pinned ferromagnetic layer and magnetic recording system using the sensor |
US5654566A (en) * | 1995-04-21 | 1997-08-05 | Johnson; Mark B. | Magnetic spin injected field effect transistor and method of operation |
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KR100953532B1 (ko) * | 2007-10-09 | 2010-04-21 | 한국과학기술연구원 | 나노자성체/자성반도체 하이브리드형 스핀 소자 및 그 제조방법 |
JP2010238956A (ja) * | 2009-03-31 | 2010-10-21 | Tdk Corp | スピン伝導デバイス |
JP2010239011A (ja) * | 2009-03-31 | 2010-10-21 | Tdk Corp | スピン注入構造及びそれを用いたスピン伝導デバイス |
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US7084468B2 (en) | 2006-08-01 |
KR100511077B1 (ko) | 2005-08-30 |
US20040178460A1 (en) | 2004-09-16 |
KR20040081625A (ko) | 2004-09-22 |
EP1458031A3 (en) | 2005-01-26 |
EP1458031A2 (en) | 2004-09-15 |
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