Polaronic signatures in the optical properties of the electron-doped cuprate superconductor Nd2-xCexCuO4

被引：11

作者：

Cappelluti, E. ^{[1
,2
,3
]}

Ciuchi, S. ^{[1
,2
,4
,5
]}

Fratini, S. ^{[6
,7
]}

机构：

[1] INFM CNR, SMC Res Ctr, I-00185 Rome, Italy

[2] INFM CNR, ISC, I-00185 Rome, Italy

[3] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[4] Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy

[5] Univ Aquila, CNISM, I-67010 Coppito, Italy

[6] Univ Grenoble 1, CNRS, Inst Neel, F-38042 Grenoble 9, France

[7] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 01期

关键词：

cerium compounds; doping; high-temperature superconductors; infrared spectra; magnetic polarons; neodymium compounds; optical conductivity; T-J MODEL;

D O I：

10.1103/PhysRevB.79.012502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the temperature and doping dependences of the midinfrared band in the optical conductivity of electron-doped cuprates in terms of magnetic/lattice polaron formation. We employ dynamical mean-field theory in the context of the Holstein-t-J model for the specific case of Nd2-xCexCuO4. We find that the onset of short-range magnetic correlations at the pseudogap temperature triggers the formation of the lattice polaron responsible for the midinfrared band.

引用

页数：4

共 26 条

[1] Angle-resolved photoemission spectral function analysis of the electron-doped cuprate Nd1.85Ce0.15CuO4 -: art. no. 064517 [J].

Armitage, NP ;

Lu, DH ;

Kim, C ;

Damascelli, A ;

Shen, KM ;

Ronning, F ;

Feng, DL ;

Bogdanov, P ;

Zhou, XJ ;

Yang, WL ;

Hussain, Z ;

Mang, PK ;

Kaneko, N ;

Greven, M ;

Onose, Y ;

Taguchi, Y ;

Tokura, Y ;

Shen, ZX .

PHYSICAL REVIEW B, 2003, 68 (06)

[2] Doping dependence of an n-type cuprate superconductor investigated by angle-resolved photoemission spectroscopy -: art. no. 257001 [J].

Armitage, NP ;

Ronning, F ;

Lu, DH ;

Kim, C ;

Damascelli, A ;

Shen, KM ;

Feng, DL ;

Eisaki, H ;

Shen, ZX ;

Mang, PK ;

Kaneko, N ;

Greven, M ;

Onose, Y ;

Taguchi, Y ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 2002, 88 (25) :4

[3]

BIRGENAU RJ, 1989, PHYS PROPERTIES HIGH, V1

[4] Polaronic features in the optical properties of the Holstein t-J model [J].

Cappelluti, E. ;

Ciuchi, S. ;

Fratini, S. .

PHYSICAL REVIEW B, 2007, 76 (12)

[5]

Cappelluti E, 2002, PHYS REV B, V66, DOI 10.1103/PhysRevB.66.165102

[6] Temperature dependence of the angle resolved photoemission spectra in the undoped cuprates:: Self-consistent approach to the t-J holstein model [J].

Cataudella, V. ;

De Filippis, G. ;

Mishchenko, A. S. ;

Nagaosa, N. .

PHYSICAL REVIEW LETTERS, 2007, 99 (22)

[7] Nonlocal composite spin-lattice polarons in high temperature superconductors [J].

De Filippis, G. ;

Cataudella, V. ;

Mishchenko, A. S. ;

Nagaosa, N. .

PHYSICAL REVIEW LETTERS, 2007, 99 (14)

[8] HOLE-POLARON FORMATION IN THE 2-DIMENSIONAL HOLSTEIN T-J MODEL - A VARIATIONAL LANCZOS STUDY [J].

FEHSKE, H ;

RODER, H ;

WELLEIN, G ;

MISTRIOTIS, A .

PHYSICAL REVIEW B, 1995, 51 (23) :16582-16593

[9] An unusual isotope effect in a high-transition-temperature superconductor [J].

Gweon, GH ;

Sasagawa, T ;

Zhou, SY ;

Graf, J ;

Takagi, H ;

Lee, DH ;

Lanzara, A .

NATURE, 2004, 430 (6996) :187-190

[10] Lanthanide substitution effects in electron-doped High-Tc superconductors studied by angle-resolved photoemission spectroscopy [J].

Ikeda, M. ;

Yoshida, T. ;

Fujimori, A. ;

Kubota, M. ;

Ono, K. ;

Unozawa, K. ;

Sasagawa, T. ;

Takagi, H. .

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2007, 20 (7-8) :563-565

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