Energy transfer to phonons after photoexcitation in one-dimensional correlated electron-phonon systems

被引：0

作者：

Yonemitsu, Kenji ^{[1
,2
]}

Maeshima, Nobuya ^{[3
]}

机构：

[1] Natl Inst Nat Sci, Inst Mol Sci, 38 Nishigonaka, Okazaki, Aichi 4448585, Japan

[2] Grad Univ Adv Studies, Dept Funct Mol Sci, Okazaki, Aichi 4448585, Japan

[3] Univ Tsukuba, Ctr Compitat Sci & Inst Mat Sci, Tsukuba, Ibaraki 3058577, Japan

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1 | 2009年 / 6卷 / 01期

关键词：

D O I：

10.1002/pssc.200879904

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to study relaxation rates of photoexcited states in correlated electron systems, we calculate the time evolution of phonons' kinetic energies after photoexcitation of a one-dimensional half-filled Hubbard model coupled with different types of phonons, which modulate transfer integrals, site energies, and on-site repulsion strengths. Without or with weak dimerization, the energy transfer to phonons that modulate on-site repulsion strengths is the largest. It increases rapidly as a function of the corresponding displacement. This suggests that the rapid relaxation of photoexcited states in one-dimensional correlated electron systems is allowed without change in symmetry by phonons that modulate Coulomb repulsion strengths. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：240 / +

页数：3

共 13 条

[1] Ultrafast optical switching to a metallic state by photoinduced Mott transition in a halogen-bridged nickel-chain compound [J].

Iwai, S ;

Ono, M ;

Maeda, A ;

Matsuzaki, H ;

Kishida, H ;

Okamoto, H ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 2003, 91 (05)

[2] Nonlinearity and macroscopic oscillations in photoinduced structural phase transitions [J].

Iwano, K .

PHYSICAL REVIEW B, 2002, 66 (06) :1-4

[3] Photoinduced Hubbard band mixing due to ultrafast laser irradiation of a one-dimensional Mott insulator [J].

Lee, J. D. ;

Inoue, J. .

PHYSICAL REVIEW B, 2007, 76 (20)

[4] Dynamics of photoexcited states in one-dimensional dimerized Mott insulators [J].

Maeshima, Nobuya ;

Yonemitsu, Kenji .

PHYSICAL REVIEW B, 2006, 74 (15)

[5] Charge-transfer excitations in one-dimensional dimerized mott insulators [J].

Maeshima, Nobuya ;

Yonemitsu, Kenji .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2007, 76 (07)

[6] Photoinduced charge and spin dynamics in strongly correlated electron systems [J].

Matsueda, Hiroaki ;

Ishihara, Sumio .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2007, 76 (08)

[7]

Miyashita N, 2003, J PHYS SOC JPN, V72, P2282, DOI 10.1143/JPSJ.72.72.2282

[8] Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3 [J].

Ogasawara, T ;

Ashida, M ;

Motoyama, N ;

Eisaki, H ;

Uchida, S ;

Tokura, Y ;

Ghosh, H ;

Shukla, A ;

Mazumdar, S ;

Kuwata-Gonokami, M .

PHYSICAL REVIEW LETTERS, 2000, 85 (10) :2204-2207

[9] Photoinduced metallic state mediated by spin-charge separation in a one-dimensional organic mott insulator [J].

Okamoto, H. ;

Matsuzaki, H. ;

Wakabayashi, T. ;

Takahashi, Y. ;

Hasegawa, T. .

PHYSICAL REVIEW LETTERS, 2007, 98 (03)

[10] Dynamics of photoexcited states in strongly correlated electron systems [J].

Takahashi, A ;

Gomi, H ;

Aihara, M .

PHYSICAL REVIEW LETTERS, 2002, 89 (20) :206402-206402

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