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Temperature dependences of lower critical fields in TmBa2 Cu3O7−x single-crystals

✍ Scribed by V.V. Moshchalkov; O.V. Petrenko; A.A. Zhukov; A.A. Gippius; V.I. Voronkova; V.S. Belov; V.A. Rybachuk


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
90 KB
Volume
162-164
Category
Article
ISSN
0921-4534

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The anisotropy of the first critical field Hcl is found to increase from H/c/~(0)/H~I(0)=4 to I0 on going to x=0.93 llc to. x=0.64 . For x=0.93, Hcl(0)=(950-+200)Oe, Hc1~( 0)=(230+20)Oe. For x=0.64, H/~(0)=(270-+30)Oe, .LC + Hc1(0)=(27-2)Oe. An anomalous linear T-dependence was found for H//c at low