@article {liu2020tunable,
	title = {Tunable spin-polarized correlated states in twisted double bilayer graphene},
	journal = {Nature},
	volume = {583},
	number = {7815},
	year = {2020},
	pages = {221{\textendash}225},
	publisher = {Nature Publishing Group},
	author = {Liu, Xiaomeng and Hao, Zeyu and Khalaf, Eslam and Lee, Jong Yeon and Yuval Ronen and Yoo, Hyobin and Najafabadi, Danial Haei and Kenji Watanabe and Takashi Taniguchi and Ashvin Vishwanath and others}
}
