Abstract
We have performed ultrahigh energy- and momentum-resolved angle-resolved photoemission spectroscopy of impurity-doped Bi2 Sr2 CaCu2 O8. We found that the point node of the superconducting gap near the (π/2,π/2) point in a pristine sample gradually evolves into a small gapless Fermi arc upon Zn or Ni doping. The shape of impurity-induced density of states inside the superconducting gap shows a marked difference between Zn and Ni doping, demonstrating that the low-energy excitation properties are strongly sensitive to the character of impurities.
| Original language | English |
|---|---|
| Article number | 100502 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 78 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Sep 4 2008 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Fermi arc in the superconducting state of impurity-doped Bi2 Sr2 CaCu2 O8. / Sato, T.; Terashima, Kensei; Nakayama, K.; Souma, S.; Takahashi, T.; Yamamoto, T.; Kadowaki, K.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 10, 100502, 04.09.2008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fermi arc in the superconducting state of impurity-doped Bi2 Sr2 CaCu2 O8
AU - Sato, T.
AU - Terashima, Kensei
AU - Nakayama, K.
AU - Souma, S.
AU - Takahashi, T.
AU - Yamamoto, T.
AU - Kadowaki, K.
PY - 2008/9/4
Y1 - 2008/9/4
N2 - We have performed ultrahigh energy- and momentum-resolved angle-resolved photoemission spectroscopy of impurity-doped Bi2 Sr2 CaCu2 O8. We found that the point node of the superconducting gap near the (π/2,π/2) point in a pristine sample gradually evolves into a small gapless Fermi arc upon Zn or Ni doping. The shape of impurity-induced density of states inside the superconducting gap shows a marked difference between Zn and Ni doping, demonstrating that the low-energy excitation properties are strongly sensitive to the character of impurities.
AB - We have performed ultrahigh energy- and momentum-resolved angle-resolved photoemission spectroscopy of impurity-doped Bi2 Sr2 CaCu2 O8. We found that the point node of the superconducting gap near the (π/2,π/2) point in a pristine sample gradually evolves into a small gapless Fermi arc upon Zn or Ni doping. The shape of impurity-induced density of states inside the superconducting gap shows a marked difference between Zn and Ni doping, demonstrating that the low-energy excitation properties are strongly sensitive to the character of impurities.
UR - http://www.scopus.com/inward/record.url?scp=51749108376&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51749108376&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.78.100502
DO - 10.1103/PhysRevB.78.100502
M3 - Article
AN - SCOPUS:51749108376
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 10
M1 - 100502
ER -