High-resolution photoemission study of Ce1-xLaxRhAs: A collapse of the energy gap in the Kondo semiconductor
Physica B: Condensed Matter Volume 383 Issue 1
Page 140-141
published_at 2006-08
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| File | |
| Title ( eng ) |
High-resolution photoemission study of Ce1-xLaxRhAs: A collapse of the energy gap in the Kondo semiconductor
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| Creator |
Higashiguchi Mitsuharu
Fujimori S.-I.
Saitoh Y.
Fujimori A.
Sasakawa T.
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| Source Title |
Physica B: Condensed Matter
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| Volume | 383 |
| Issue | 1 |
| Start Page | 140 |
| End Page | 141 |
| Abstract |
High-resolution resonance-photoemission spectroscopy has been performed on the Ce1-xLaxRhAs (0≤x≤0.05) single crystal to elucidate a collapse of the energy gap in the Kondo semiconductor CeRhAs by La substitution. With increasing x, the spectral intensity of the Ce4f1 derived states near the Fermi level decreases and new 4f derived spectral feature appears at a higher binding energy. The Rh4d-derived states, on the other hand, are not significantly changed by the substitution. New 4f-derived states have incoherent nature, which is responsible for the collapse of the semiconducting state for x>∼0.02.
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| Keywords |
Ce1-xLaxRhAs
resonance photoemission
Kondo semiconductor
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Elsevier B.V.
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| Date of Issued | 2006-08 |
| Rights |
Copyright (c) 2006 Elsevier B.V.
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0921-4526
[DOI] 10.1016/j.physb.2006.03.081
[NCID] AA10673546
[DOI] http://dx.doi.org/10.1016/j.physb.2006.03.081
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