Fig. 4: Suppression of negative compressibility by the presence of magnons. | Nature Physics

Fig. 4: Suppression of negative compressibility by the presence of magnons.

From: Thermodynamics of free and bound magnons in graphene

Fig. 4

a, The values of dµ/dn near ν = 1 measured as a function of Vd.c.. b, Representative dµ/dn traces on the hole (left) and electron (right) sides of ν = 1 measured with Vd.c. = 0 mV (blue) and Vd.c. = 10 mV (red), showing that the negative compressible states are suppressed by the presence of magnons. c, Averaged dµ/dn on the hole (blue) and electron (red) sides of ν = 1 as a function of Vd.c.. The grey dotted lines mark the Zeeman energy ±EZ. d, Average dµ/dn on the other Wigner crystal states as a function of d.c. bias, showing no suppression by Vd.c.. The grey dotted lines mark the Zeeman energy ±EZ.

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