Muon spin relaxation and DFT+U indicate that the kagome MOF Cu3(HOTP)2 is a clean, gapless 2D quantum spin liquid whose excitations are best matched by a Z2-linear Dirac model with additional singlet excitations.
No evidence for magnetic ordering is found in our studies taken down to 50 mK, consistent with the 38 mK upper limit for ordering reported earlier [29]
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Spin liquid properties of the kagome material Cu$_3$(HOTP)$_2$
Muon spin relaxation and DFT+U indicate that the kagome MOF Cu3(HOTP)2 is a clean, gapless 2D quantum spin liquid whose excitations are best matched by a Z2-linear Dirac model with additional singlet excitations.