Surface alloy formation of Fe on Cr(100) studied by scanning tunneling microscopy
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作者:
Choi, YJ
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机构:Seoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South Korea
Choi, YJ
Jeong, IC
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机构:Seoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South Korea
Jeong, IC
Park, JY
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机构:Seoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South Korea
Park, JY
Kahng, SJ
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机构:Seoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South Korea
Kahng, SJ
Lee, J
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机构:Seoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South Korea
Lee, J
Kuk, Y
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Seoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South KoreaSeoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South Korea
Kuk, Y
[1
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机构:
[1] Seoul Natl Univ, Ctr Sci Nanometer Scale, Natl Creat Res Initiat, Seoul 151742, South Korea
[2] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea
Surface alloy formation of Fe on a Cr(100) surface was studied using a UHV scanning tunneling microscope. As we deposited Fe of less than 1 ML at room temperature and subsequently annealed the substrate at temperatures between 200 degrees C and 300 degrees C, we observed that Fe atoms incorporate into the Cr(100) surface, forming a well-ordered surface alloy of Fe0.5Cr0.5. These two elements were differentiated by imaging at the bias voltages near their surface states. The surface alloying was also confirmed by imaging at the bias voltages of their Shockley image states. By annealing the Fe layer of similar to 1 ML at 250 degrees C, we found that the solubility of Fe into the Cr(100) surface is similar to 25% at that temperature. Fe overlayer shows kinetically roughened mound structure at room temperature while it shows equilibrium two-dimensional islands at 300 degrees C. [S0163-1829(99)06115-9].
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Christensen, A
Ruban, AV
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Ruban, AV
Stoltze, P
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Stoltze, P
Jacobsen, KW
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Jacobsen, KW
Skriver, HL
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Skriver, HL
Norskov, JK
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Norskov, JK
Besenbacher, F
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Christensen, A
Ruban, AV
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Ruban, AV
Stoltze, P
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Stoltze, P
Jacobsen, KW
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Jacobsen, KW
Skriver, HL
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Skriver, HL
Norskov, JK
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AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK
Norskov, JK
Besenbacher, F
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机构:
AARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARKAARHUS UNIV,INST PHYS & ASTRON,CTR ATOM SCALE MAT PHYS,DK-8000 AARHUS,DENMARK