Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ
Using ultrafast optical techniques, we detect two types of bosons strongly coupled to electrons in the family of Bi _2 Sr _2 CaCu _2 O _8+ _δ (Bi-2212) from the underdoped to overdoped regimes. The different doping dependences of the electron–boson coupling strengths enable us to identify them as ph...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/10/103027 |
| _version_ | 1827874586063011840 |
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| author | E E M Chia D Springer S K Nair X Q Zou S A Cheong C Panagopoulos T Tamegai H Eisaki S Ishida S Uchida A J Taylor J-X Zhu |
| author_facet | E E M Chia D Springer S K Nair X Q Zou S A Cheong C Panagopoulos T Tamegai H Eisaki S Ishida S Uchida A J Taylor J-X Zhu |
| author_sort | E E M Chia |
| collection | DOAJ |
| description | Using ultrafast optical techniques, we detect two types of bosons strongly coupled to electrons in the family of Bi _2 Sr _2 CaCu _2 O _8+ _δ (Bi-2212) from the underdoped to overdoped regimes. The different doping dependences of the electron–boson coupling strengths enable us to identify them as phonons and spin fluctuations: electron–phonon coupling ( λ _e−ph ) peaks at optimal doping, while electron–spin fluctuation coupling ( λ _e−sf ) decreases monotonically with doping. This observation is consistent with two facts: (i) superconductivity is in close proximity with antiferromagnetism at low dopings and (ii) a pronounced lattice renormalization effect at larger dopings. |
| first_indexed | 2024-03-12T16:53:59Z |
| format | Article |
| id | doaj.art-c763d8c8851a49749d7baf4a0f499372 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:53:59Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-c763d8c8851a49749d7baf4a0f4993722023-08-08T11:04:11ZengIOP PublishingNew Journal of Physics1367-26302013-01-01151010302710.1088/1367-2630/15/10/103027Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δE E M Chia0D Springer1S K Nair2X Q Zou3S A Cheong4C Panagopoulos5T Tamegai6H Eisaki7S Ishida8S Uchida9A J Taylor10J-X Zhu11Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, SingaporeDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, SingaporeDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, SingaporeDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, SingaporeDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, SingaporeDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore; Department of Physics, University of Crete and FORTH , 71003 Heraklion, GreeceDepartment of Applied Physics, University of Tokyo , Hongo, Bunkyo-ku, Tokyo 113-8656, JapanNational Institute of Advanced Industrial Science and Technology , Tsukuba 305-8568, JapanDepartment of Physics, University of Tokyo , Bunkyo-ku, Tokyo 113-0033, JapanDepartment of Physics, University of Tokyo , Bunkyo-ku, Tokyo 113-0033, JapanMaterials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USATheoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM 87545, USAUsing ultrafast optical techniques, we detect two types of bosons strongly coupled to electrons in the family of Bi _2 Sr _2 CaCu _2 O _8+ _δ (Bi-2212) from the underdoped to overdoped regimes. The different doping dependences of the electron–boson coupling strengths enable us to identify them as phonons and spin fluctuations: electron–phonon coupling ( λ _e−ph ) peaks at optimal doping, while electron–spin fluctuation coupling ( λ _e−sf ) decreases monotonically with doping. This observation is consistent with two facts: (i) superconductivity is in close proximity with antiferromagnetism at low dopings and (ii) a pronounced lattice renormalization effect at larger dopings.https://doi.org/10.1088/1367-2630/15/10/103027 |
| spellingShingle | E E M Chia D Springer S K Nair X Q Zou S A Cheong C Panagopoulos T Tamegai H Eisaki S Ishida S Uchida A J Taylor J-X Zhu Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ New Journal of Physics |
| title | Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ |
| title_full | Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ |
| title_fullStr | Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ |
| title_full_unstemmed | Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ |
| title_short | Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ |
| title_sort | doping dependence of the electron phonon and electron spin fluctuation interactions in the high tc superconductor bi2sr2cacu2o8 δ |
| url | https://doi.org/10.1088/1367-2630/15/10/103027 |
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