Magnetotransport Mechanisms in Strongly Underdoped YBa_2Cu_3O_x Single Crystals

(2) Argonne National Laboratory); A. P. Paulikas (2); B. W. Veal (2) ((1) Kent State University; C. C. Almasan (1); E. Cimpoiasu (1); G. A. Levin (1)

arxiv: cond-mat/0109489 · v1 · submitted 2001-09-26 · ❄️ cond-mat.supr-con · cond-mat.str-el

Magnetotransport Mechanisms in Strongly Underdoped YBa₂Cu₃O_x Single Crystals

E. Cimpoiasu (1) , G. A. Levin (1) , C. C. Almasan (1) , A. P. Paulikas (2) , B. W. Veal (2) ((1) Kent State University , (2) Argonne National Laboratory) This is my paper

classification ❄️ cond-mat.supr-con cond-mat.str-el

keywords contributioncrystalsout-of-planepartialsinglestronglytemperatureunderdoped

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We report magnetoresistivity measurements on strongly underdoped YBa_2Cu_3O_x (x=6.25, 6.36) single crystals in applied magnetic fields H || c-axis. We identify two different contributions to both in-plane and out-of-plane magnetoresistivities. The first contribution has the same sign as the temperature coefficient of the resistivity \partial ln(\rho_i)/\partial T (i={c,ab}). This contribution reflects the incoherent nature of the out-of-plane transport. The second contribution is positive, quadratic in field, with an onset temperature that correlates to the antiferromagnetic ordering.

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Magnetotransport Mechanisms in Strongly Underdoped YBa₂Cu₃O_x Single Crystals

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