how to specify default sort fields in solr schema?

[A Geek]

Hi all, Is there a way to specify the default sort fields in the solr schema in 
3.6 or 4.0Beta? similar to the default search operator. Like, the default 
search operator can be set to "OR" and only when you want to override you pass 
it in the search URL as "AND". I have lots of fields related to the docs I'm 
indexing and want the result to be sorted on certain set of fields by default. 
Would appreciate any help in this direction. Thanks in advance. 
Regards, DK