Pressure effects on the heavy-fermion antiferromagnet CeAuSb<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn mathvariant="bold">2</mml:mn></mml:msub></mml:math>
Physical review. B, Condensed matter and materials physics