Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pressure dependence of Ce valence in CeRhIn5   We have studied the Ce valence as a function of pressure in CeRhIn5 at 300 K
and at 22 K using x-ray absorption spectroscopy in partial fluorescent yield
mode. At room temperature, we found no detectable change in Ce valence greater
than 0.01 up to a pressure of 5.5 GPa. At 22 K, the valence remains robust
against pressure below 6 GPa, in contrast to the predicted valence crossover at
P=2.35 GPa. This work yields an upper limit for the change in Ce-valence and
suggests that the critical valence fluctuation scenario, in its current form,
is unlikely.

26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
3
The categories of this paper are: physics