Vortex lattice melting in untwinned and twinned single crystals of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">YBa</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Cu</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>7</mn><mi mathvariant="normal">−</mi><mi mathvariant="normal">δ</mi></mrow></msub></mrow></math>

W. K. Kwok; S. Fleshler; U. Welp; V. M. Vinokur; J. Downey; G. W. Crabtree; M. M. Miller

doi:10.1103/PhysRevLett.69.3370

Vortex lattice melting in untwinned and twinned single crystals of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$

W. K. Kwok, S. Fleshler, U. Welp, V. M. Vinokur, J. Downey, G. W. Crabtree, and M. M. Miller

Phys. Rev. Lett. 69, 3370 – Published 7 December 1992

Abstract

The melting transition in twinned and untwinned single crystals is measured resistively in fields up to 8 T as a function of the angle between the c axis and the a-b plane. The angular dependence follows the Lindemann criterion with $c_{L}$ =0.15. The suppression of melting by strong pinning by twin boundaries is demonstrated.