Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O Films
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...In the work of Jin et al. (1994), ¹ was suppressed by substrate-induced strain, and, as a consequence, the was much higher immediately above the transition than in crystals since the system was still in the insulating state, inducing an enormous change in resistivity....
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...R(H))/R(H), where R(0) and R(H) are the resistances without and with a magnetic "eld H, respectively, and expressing the result as a percentage (i.e., multiplying by an additional factor 100) it has been shown thatMR ratios as large as 127,000% near 77 K can be obtained (Jin et al., 1994)....
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...2.2.1 contribute to the understanding, at least in part, of the CMR e!ect found in thin "lms of this same compound (Jin et al., 1994)....
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