| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Scanning Tunneling Spectroscopy and Break Junction Spectroscopy on Iron-Oxypnictide Superconductor NdFeAs(O0.9 F0.1) |
|
言語 |
en |
| 作成者 |
Sugimoto, A.
Ekino, T.
Ukita, R.
Shohara, K.
Okabe, H.
Akimitsu, J.
Gabovich, A.M.
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| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2010. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| 権利情報 |
|
|
権利情報 |
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Iron-pnictide superconductor |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
STM |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
tunneling spectroscopy |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
420 |
| 内容記述 |
|
|
内容記述 |
Iron-oxypnictide superconductor NdFeAs(O0.9F0.1) was studied using both low-temperature scanning tunneling microscopy/spectroscopy (STM/STS) and tunnel break junction (BJ) methods. STM topography showed granular and spot structures with a typical size of several nanometers, most probably governed by fluorine atom distribution. The majority of STS conductance, G, versus voltage, V, curves revealed V-shaped structures, whereas some of G(V) dependences possessed coherent gap peaks or kinks at gap energies. At the same time, G(V) dependences obtained by the BJ technique showed clear-cut coherence peaks with peak-to-peak distances Vpp = 4 Δ/e ~ 25 mV at 4.2 K, where Δ is the superconducting energy gap, e > 0 is the elementary charge. This yields Δ (0) = 6~7 meV, so that the ratio 2Δ(0)/kBTc is about 3~4, kB being the Boltzmann constant. This value is consistent with the conventional weak-coupling s-wave Bardeen-Cooper-Schrieffer theory. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
This research was supported by Grant-in-Aid for Scientific Research (No. 19540370) from JSPS, Japan. AMG highly appreciates the 2009 Visitors Program of the Max Planck Institute for the Physics of Complex Systems (Dresden, Germany). |
| 出版者 |
|
|
出版者 |
Elsevier B.V. |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AO |
|
出版タイプResource |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1016/j.physc.2010.05.038 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.physc.2010.05.038 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0921-4534 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11461984 |
| 開始ページ |
|
|
開始ページ |
1070 |
| 書誌情報 |
Physica C: Superconductivity and its Applications
Physica C: Superconductivity and its Applications
巻 470,
号 20,
p. 1070-1072,
発行日 2010-10-01
|
| 旧ID |
46729 |
PhysicaC_470_1070.pdf (316.4 KB)
