Osmond Chia,Business reporterandMitchell Labiak,Business reporterAFP via Getty ImagesShares in major chip firms have fallen sharply in the US and Asia as a sell-off in artificial intelligence-related stocks deepened.Trading on South Korea's benchmark Kospi index was paused temporarily on Tuesday morning after sliding by 8%. It fell further after the 20-minute halt was lifted, closing 10.8% lower.The slump was led by technology firms, with Samsung Electronics and SK Hynix both falling by more tha...