Observation of magnetic quantum phase crossovers in a semiconductor spin ladder

Kavli Affiliate: Menno Veldhorst | Summary:Understanding collective phases of strongly correlated quantum magnets relies on theoretically tractable model systems with precise microscopic control. Antiferromagnetic spin ladders provide such a setting, hosting field-tunable gapped and gapless phases at half filling and unconventional pairing tendencies upon doping. Here, we realize a programmable…