Unconventional enhancement of elastic constants in superconducting La2-xSrxCuO4

M. Nohara; T. Suzuki; Y. Maeno; T. Fujita; I. Tanaka; H. Kojima

doi:10.1016/0921-4534(94)91849-X

Unconventional enhancement of elastic constants in superconducting La_2-xSr_xCuO₄

M. Nohara, T. Suzuki, Y. Maeno, T. Fujita, I. Tanaka, H. Kojima

Research output: Contribution to journal › Article › peer-review

Abstract

Ultrasonic measurements were performed on single crystals of La_2-xSr_xCuO₄ (LSCO) with x = 0.09, 0.14 and 0.19. We found that the elastic constants of LSCO increase well below the superconducting transition temperature T_c, in contrast with softeniing observed in conventional superconductors. The difference originates from the change in superconducting condensation energy ø under the lattice strain ε_i induced by a sound wave.

Original language	English
Pages (from-to)	1249-1250
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	235-240
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(94)91849-X
Publication status	Published - Dec 1994
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Unconventional enhancement of elastic constants in superconducting La2-xSrxCuO4",

abstract = "Ultrasonic measurements were performed on single crystals of La2-xSrxCuO4 (LSCO) with x = 0.09, 0.14 and 0.19. We found that the elastic constants of LSCO increase well below the superconducting transition temperature Tc, in contrast with softeniing observed in conventional superconductors. The difference originates from the change in superconducting condensation energy {\o} under the lattice strain εi induced by a sound wave.",

author = "M. Nohara and T. Suzuki and Y. Maeno and T. Fujita and I. Tanaka and H. Kojima",

year = "1994",

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doi = "10.1016/0921-4534(94)91849-X",

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volume = "235-240",

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T1 - Unconventional enhancement of elastic constants in superconducting La2-xSrxCuO4

AU - Nohara, M.

AU - Suzuki, T.

AU - Maeno, Y.

AU - Fujita, T.

AU - Tanaka, I.

AU - Kojima, H.

PY - 1994/12

Y1 - 1994/12

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AB - Ultrasonic measurements were performed on single crystals of La2-xSrxCuO4 (LSCO) with x = 0.09, 0.14 and 0.19. We found that the elastic constants of LSCO increase well below the superconducting transition temperature Tc, in contrast with softeniing observed in conventional superconductors. The difference originates from the change in superconducting condensation energy ø under the lattice strain εi induced by a sound wave.

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