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Abstract:
We report on ρ(T)ρ(T) measurements of YbRh2Si2YbRh2Si2 for View the MathML source0.1K<T<300K up to 15 GPa. The (T,p)(T,p) phase diagram can be divided in three pressure ranges: (i) For View the MathML sourcep<4.1GPa the ordering temperature TNTN increases strongly, followed by (ii) a quasi-pressure-independent regime of TNTN in the range View the MathML source4.1GPa<p<8GPa. After a sudden increase of TNTN, the system eventually (iii) exhibits a weak pressure dependence above View the MathML source≈10GPa with View the MathML sourceTN≈7K at 15 GPa. Moreover, the reversible pressure dependencies of several maxima in ρ(T)ρ(T) are analyzed according to these pressure ranges.
