e.!¢j z hk
TRANSCRIPT
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“Metallic Quantum Well States in Artificial Structures of
Strongly Correlated Oxide”
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Tcmax = -235 C° Tc
max = -178 C° Tcmax = -163 C°
Tcmax
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n = 1 n = 2 n = 3
SrVO3
SrVO3
SrVO3
e-
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用語説明:「強相関電子」
e-
e-
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e-
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用語説明:「量子井戸」
n = 1 n = 2 n = 3
e-
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高温超伝導体の結晶構造
Tcmax
Tcmax = -235 C° Tc
max = -178 C° Tcmax = -163 C°
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z
ABO3
ABO3
ABO3
ABO3
ABO3
ABO3
AO
AO
SrVO3
SrVO3
SrVO3
A: Sr, La
B: Cu, Mn
O:
層状結晶構造と今回作製した量子井戸構造の類似性
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n = 1 n = 2 n = 3
SrVO3
SrVO3
SrVO3
e-
作製した量子井戸構造の特長
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n = 1 n = 2 n = 3
SrVO3
SrVO3
SrVO3
e-
作製した量子井戸構造の特長
SrVO3
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n = 1 n = 2 n = 3
SrVO3
SrVO3
SrVO3
作製した量子井戸構造の特長
e-
n = 4
SrVO3
SrVO3
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作る技術:レーザー分子線エピタキシー装置
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作る技術:原子レベルで平坦な表面と急峻な界面
μ μ
基板
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レーザー分子線エピタキシー& 光電子分光複合装置
PF
BL28A
見る技術:
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PF
実験装置の写真
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見る技術:角度分解光電子分光測定
PF
BL28A
e-
SrVO3
&
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SrVO3
SrVO3
SrVO3
デジタル化(量子化)状態の観測
n = 1 n = 2 n = 3
m
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量子井戸内での強相関電子の振る舞い
SrVO3
dxydxz dyz dxz
dyz
dxz
n = 1
n = 2
n = 3
n = 3
n = 2
n = 1
SrVO3
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x
y
z
dxydxz dyz
n = 1
n = 2
n = 3
軌道選択的量子化
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n = 1
n = 2
n = 3
量子化状態の質量増強
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室温超伝導へむけて!
Tcmax = 38 K Tc
max = 95 K Tcmax = 110 K
Tcmax
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A19684010 S22224005
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