Ultrasonic studies of anisotropic flux pinning in La1.85Sr0.15CuO4 under high magnetic fields

T. Fukase, M. Kamata, T. Hanaguri, T. Sasaki, Takao Suzuki, T. Goto, I. Tanaka, H. Kojima

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The flux line lattice (FLL) elasticity and its anisotropic pinning have been investigated in a single crystalline La1.85Sr0.15CuO4 by ultrasonic measurements under high magnetic fields. The depinning activation energies are deduced from measurements under various settings of the directions of wave vector k, polarization vector u and magnetic fields H as Uac(0 K, 14 T) = 972 K for H⊥c, u∥c, Uab(0 K, 14 T) = 201 K for H⊥c, u∥(c × H) and Uca(0 K, 14 T) = 25 K for H∥c, u⊥c. The magnetic field dependence of U are also deduced as Uac ∝ H-0.3 and Uca ∝ H-1.5. The angular dependence of Uac is discussed on the basis of the intrinsic pinning mechanism.

Original languageEnglish
Pages (from-to)274-276
Number of pages3
JournalPhysica B: Condensed Matter
Volume216
Issue number3-4
DOIs
Publication statusPublished - 1996 Jan 1
Externally publishedYes

Fingerprint

Flux pinning
flux pinning
ultrasonics
Ultrasonics
Magnetic fields
magnetic fields
Ultrasonic measurement
Elasticity
elastic properties
Activation energy
Polarization
Fluxes
activation energy
Crystalline materials
polarization

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Ultrasonic studies of anisotropic flux pinning in La1.85Sr0.15CuO4 under high magnetic fields. / Fukase, T.; Kamata, M.; Hanaguri, T.; Sasaki, T.; Suzuki, Takao; Goto, T.; Tanaka, I.; Kojima, H.

In: Physica B: Condensed Matter, Vol. 216, No. 3-4, 01.01.1996, p. 274-276.

Research output: Contribution to journalArticle

Fukase, T, Kamata, M, Hanaguri, T, Sasaki, T, Suzuki, T, Goto, T, Tanaka, I & Kojima, H 1996, 'Ultrasonic studies of anisotropic flux pinning in La1.85Sr0.15CuO4 under high magnetic fields', Physica B: Condensed Matter, vol. 216, no. 3-4, pp. 274-276. https://doi.org/10.1016/0921-4526(95)00491-2
Fukase, T. ; Kamata, M. ; Hanaguri, T. ; Sasaki, T. ; Suzuki, Takao ; Goto, T. ; Tanaka, I. ; Kojima, H. / Ultrasonic studies of anisotropic flux pinning in La1.85Sr0.15CuO4 under high magnetic fields. In: Physica B: Condensed Matter. 1996 ; Vol. 216, No. 3-4. pp. 274-276.
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AU - Suzuki, Takao

AU - Goto, T.

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AU - Kojima, H.

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