The elastic Grüneisen ratio becomes arbitrarily large at low T near maximal frustration in Ising models, signaling extensive ground-state entropy, while Heisenberg models show phase transitions dominating the low-T response.
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Unveiling Magnetic Frustration via the Elastocaloric Effect
The elastic Grüneisen ratio becomes arbitrarily large at low T near maximal frustration in Ising models, signaling extensive ground-state entropy, while Heisenberg models show phase transitions dominating the low-T response.