Payment's received over info for physicist (8)
I believe the answer is:
roentgen
'physicist' is the definition.
(Wilhelm Roentgen)
'payment's received over info' is the wordplay.
'payment' becomes 'rent' (rent is a kind of payment).
'received' is an insertion indicator.
'over' becomes 'o' (cricket abbreviation**).
'info' becomes 'gen' (gen is a kind of info).
'rent' going around 'o' is 'roent'.
'roent'+'gen'='ROENTGEN'
'for' is the link.
(Other definitions for roentgen that I've seen before include "X-ray discoverer" , "Measure of radiation" , "German physicist" , "Pioneer in radiation" .)