Lattice instability in the normal state of La2-xSrxCuO4

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Novel softening has been found in the transverse elastic constant (C11-C12)/2 below 50 K in single-crystalline La1.86Sr0.14CuO4 (LSCO) by high-precision ultrasonic measurements in magnetic fields H along the c axis. With decreasing temperature, this lattice softening persists down to the superconducting transition temperature Tc(H), which is reduced to 14 K by applying fields up to 14 T. Below Tc(H) the softening turns to rapid hardening. This behavior indicates the presence of lattice instability of the orthorhombic (Bmab) structure in the normal state of LSCO, which disappears in the superconducting state. This is evidence for the intimate interplay between high-Tc superconductivity and the lattice instability in LSCO.

Original languageEnglish
Pages (from-to)419-421
Number of pages3
JournalJournal of Superconductivity
Volume7
Issue number2
DOIs
Publication statusPublished - Apr 1994
Externally publishedYes

Fingerprint

softening
Ultrasonic measurement
Elastic constants
Superconductivity
Superconducting transition temperature
Hardening
Magnetic fields
Crystalline materials
hardening
superconductivity
elastic properties
ultrasonics
transition temperature
magnetic fields
Temperature
temperature

Keywords

  • electron-phonon coupling
  • electronic band structure
  • lattice instability
  • single-crystalline LSCO
  • Ultrasonic experiments

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)
  • Electronic, Optical and Magnetic Materials

Cite this

Lattice instability in the normal state of La2-xSrxCuO4 . / Suzuki, T.; Nohara, Minoru; Maeno, Y.; Fujita, T.; Tanaka, I.; Kojima, H.

In: Journal of Superconductivity, Vol. 7, No. 2, 04.1994, p. 419-421.

Research output: Contribution to journalArticle

Suzuki, T, Nohara, M, Maeno, Y, Fujita, T, Tanaka, I & Kojima, H 1994, 'Lattice instability in the normal state of La2-xSrxCuO4 ', Journal of Superconductivity, vol. 7, no. 2, pp. 419-421. https://doi.org/10.1007/BF00724580
Suzuki, T. ; Nohara, Minoru ; Maeno, Y. ; Fujita, T. ; Tanaka, I. ; Kojima, H. / Lattice instability in the normal state of La2-xSrxCuO4 In: Journal of Superconductivity. 1994 ; Vol. 7, No. 2. pp. 419-421.
@article{5086304fb16142b48f8b247e2916dafa,
title = "Lattice instability in the normal state of La2-xSrxCuO4",
abstract = "Novel softening has been found in the transverse elastic constant (C11-C12)/2 below 50 K in single-crystalline La1.86Sr0.14CuO4 (LSCO) by high-precision ultrasonic measurements in magnetic fields H along the c axis. With decreasing temperature, this lattice softening persists down to the superconducting transition temperature Tc(H), which is reduced to 14 K by applying fields up to 14 T. Below Tc(H) the softening turns to rapid hardening. This behavior indicates the presence of lattice instability of the orthorhombic (Bmab) structure in the normal state of LSCO, which disappears in the superconducting state. This is evidence for the intimate interplay between high-Tc superconductivity and the lattice instability in LSCO.",
keywords = "electron-phonon coupling, electronic band structure, lattice instability, single-crystalline LSCO, Ultrasonic experiments",
author = "T. Suzuki and Minoru Nohara and Y. Maeno and T. Fujita and I. Tanaka and H. Kojima",
year = "1994",
month = "4",
doi = "10.1007/BF00724580",
language = "English",
volume = "7",
pages = "419--421",
journal = "Journal of Superconductivity and Novel Magnetism",
issn = "1557-1939",
publisher = "Springer New York",
number = "2",

}

TY - JOUR

T1 - Lattice instability in the normal state of La2-xSrxCuO4

AU - Suzuki, T.

AU - Nohara, Minoru

AU - Maeno, Y.

AU - Fujita, T.

AU - Tanaka, I.

AU - Kojima, H.

PY - 1994/4

Y1 - 1994/4

N2 - Novel softening has been found in the transverse elastic constant (C11-C12)/2 below 50 K in single-crystalline La1.86Sr0.14CuO4 (LSCO) by high-precision ultrasonic measurements in magnetic fields H along the c axis. With decreasing temperature, this lattice softening persists down to the superconducting transition temperature Tc(H), which is reduced to 14 K by applying fields up to 14 T. Below Tc(H) the softening turns to rapid hardening. This behavior indicates the presence of lattice instability of the orthorhombic (Bmab) structure in the normal state of LSCO, which disappears in the superconducting state. This is evidence for the intimate interplay between high-Tc superconductivity and the lattice instability in LSCO.

AB - Novel softening has been found in the transverse elastic constant (C11-C12)/2 below 50 K in single-crystalline La1.86Sr0.14CuO4 (LSCO) by high-precision ultrasonic measurements in magnetic fields H along the c axis. With decreasing temperature, this lattice softening persists down to the superconducting transition temperature Tc(H), which is reduced to 14 K by applying fields up to 14 T. Below Tc(H) the softening turns to rapid hardening. This behavior indicates the presence of lattice instability of the orthorhombic (Bmab) structure in the normal state of LSCO, which disappears in the superconducting state. This is evidence for the intimate interplay between high-Tc superconductivity and the lattice instability in LSCO.

KW - electron-phonon coupling

KW - electronic band structure

KW - lattice instability

KW - single-crystalline LSCO

KW - Ultrasonic experiments

UR - http://www.scopus.com/inward/record.url?scp=0028410185&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028410185&partnerID=8YFLogxK

U2 - 10.1007/BF00724580

DO - 10.1007/BF00724580

M3 - Article

VL - 7

SP - 419

EP - 421

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

SN - 1557-1939

IS - 2

ER -