Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet
We analyze the spectral properties of a phenomenological model for a weakly doped two-dimensional antiferromagnet, in which the carriers move within one of the two sublattices where they were introduced. Such a constraint results in the free carrier spectra with the maxima at k = (±π/2,±π/2) obser...
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| Veröffentlicht in: | Condensed Matter Physics |
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| Datum: | 2008 |
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| Sprache: | English |
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Інститут фізики конденсованих систем НАН України
2008
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/119344 |
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| Zitieren: | Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet / V.M. Loktev, V. Turkowski // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 483-493. — Бібліогр.: 33 назв. — англ. |
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Loktev, V.M. Turkowski, V. 2017-06-06T13:48:15Z 2017-06-06T13:48:15Z 2008 Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet / V.M. Loktev, V. Turkowski // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 483-493. — Бібліогр.: 33 назв. — англ. 1607-324X PACS: 74.20.-z, 74.20.Fg, 74.20.Rp, 74.72.-h DOI:10.5488/CMP.11.3.483 https://nasplib.isofts.kiev.ua/handle/123456789/119344 We analyze the spectral properties of a phenomenological model for a weakly doped two-dimensional antiferromagnet, in which the carriers move within one of the two sublattices where they were introduced. Such a constraint results in the free carrier spectra with the maxima at k = (±π/2,±π/2) observed in some cuprates. We consider the spectral properties of the model by taking into account uctuations of the spins in the antiferromagnetic background. We show that such fluctuations lead to a non-pole-like structure of the single-hole Green's function and these fluctuations can be responsible for some anomalous strange metal properties of underdoped cuprates in the nonsuperconducting regime. Проаналiзовано спектральнi властивостi феноменологiчної моделi для слабо легованого двовимiрного антиферомагнетика, в якому носiї рухаються у саме тiй з двох пiдграток, куди вони були введенi. Таке обмеження приводить до спектрiв вiльних носiїв з максимумами при k = (±π/2,±π/2), що спостерiгаються у деяких купратах. Спектральнi властивостi моделi дослiджено шляхом врахування флуктуацiй спiнiв вiдносно антиферомагнiтного фону. Показано, що такi флуктуацiї ведуть до безполюсної структури однодiркових функцiй Ґрiна, а також цi флуктуацiї можуть вiдповiдати за певнi аномальнi властивостi недолегованих купратiв типу “дивного металу” у ненадпровiдному режимi. It is a great pleasure for us to contribute with this paper to a special issue of Condensed Matter Physics on the occasion of the 70th anniversary of a well-known Ukrainian theoretical physicist, a Corresponding Member of The National Academy of Sciences of Ukraine, Professor Ihor V. Stasyuk, who contributed both in the elds of the electronic properties of strongly correlated systems and the theory of superconductivity, including the high-Tc case. V.M.L. would like to thank P.W. Anderson for a bene cial communication. V.T. acknowledges support by the National Science Foundation under grant number DMR{0553485. en Інститут фізики конденсованих систем НАН України Condensed Matter Physics Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet Спiновi флуктуацiї та поведiнка типу “дивного металу” у слабо легованому антиферомагнетику Article published earlier |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet |
| spellingShingle |
Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet Loktev, V.M. Turkowski, V. |
| title_short |
Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet |
| title_full |
Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet |
| title_fullStr |
Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet |
| title_full_unstemmed |
Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet |
| title_sort |
spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet |
| author |
Loktev, V.M. Turkowski, V. |
| author_facet |
Loktev, V.M. Turkowski, V. |
| publishDate |
2008 |
| language |
English |
| container_title |
Condensed Matter Physics |
| publisher |
Інститут фізики конденсованих систем НАН України |
| format |
Article |
| title_alt |
Спiновi флуктуацiї та поведiнка типу “дивного металу” у слабо легованому антиферомагнетику |
| description |
We analyze the spectral properties of a phenomenological model for a weakly doped two-dimensional antiferromagnet,
in which the carriers move within one of the two sublattices where they were introduced. Such a
constraint results in the free carrier spectra with the maxima at k = (±π/2,±π/2) observed in some cuprates.
We consider the spectral properties of the model by taking into account uctuations of the spins in the antiferromagnetic
background. We show that such fluctuations lead to a non-pole-like structure of the single-hole
Green's function and these fluctuations can be responsible for some anomalous strange metal properties of
underdoped cuprates in the nonsuperconducting regime.
Проаналiзовано спектральнi властивостi феноменологiчної моделi для слабо легованого двовимiрного антиферомагнетика, в якому носiї рухаються у саме тiй з двох пiдграток, куди вони були введенi. Таке обмеження приводить до спектрiв вiльних носiїв з максимумами при k = (±π/2,±π/2), що спостерiгаються у деяких купратах. Спектральнi властивостi моделi дослiджено шляхом врахування флуктуацiй спiнiв вiдносно антиферомагнiтного фону. Показано, що такi флуктуацiї ведуть до безполюсної структури однодiркових функцiй Ґрiна, а також цi флуктуацiї можуть вiдповiдати за певнi аномальнi властивостi недолегованих купратiв типу “дивного металу” у ненадпровiдному режимi.
|
| issn |
1607-324X |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/119344 |
| citation_txt |
Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet / V.M. Loktev, V. Turkowski // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 483-493. — Бібліогр.: 33 назв. — англ. |
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2025-12-07T20:22:18Z |
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