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| Format: | Preprint |
| Published: |
2026
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| Online Access: | https://arxiv.org/abs/2601.05484 |
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| _version_ | 1866915718379864064 |
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| author | Chai, Yisheng |
| author_facet | Chai, Yisheng |
| contents | In thermodynamics, volume is an essential extensive variable. Strain-line, area, or volume change-therefore offers a direct window into correlated quantum matter: tiny length changes ΔL track how the lattice responds when state variables such as magnetic field H and/or temperature T are varied, revealing phases, transitions, and dynamics. Direct, high-precision strain measurements are already difficult; their susceptibilities are harder still. Very recently, several direct techniques have made vital progress on two key quantities: the magnetostrictive coefficient dλ/dH (often denoted qijk or dij in the magnetostriction literatures), and the linear thermal-expansion coefficient α= dλ/dT. Considering these two strain susceptibilities together-they are fundamental and complementary-clarifies why these thermodynamic properties merit renewed attention. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_05484 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Revival of Strain Susceptibilities: Magnetostrictive Coefficient and Thermal-Expansion Coefficient Chai, Yisheng Strongly Correlated Electrons In thermodynamics, volume is an essential extensive variable. Strain-line, area, or volume change-therefore offers a direct window into correlated quantum matter: tiny length changes ΔL track how the lattice responds when state variables such as magnetic field H and/or temperature T are varied, revealing phases, transitions, and dynamics. Direct, high-precision strain measurements are already difficult; their susceptibilities are harder still. Very recently, several direct techniques have made vital progress on two key quantities: the magnetostrictive coefficient dλ/dH (often denoted qijk or dij in the magnetostriction literatures), and the linear thermal-expansion coefficient α= dλ/dT. Considering these two strain susceptibilities together-they are fundamental and complementary-clarifies why these thermodynamic properties merit renewed attention. |
| title | Revival of Strain Susceptibilities: Magnetostrictive Coefficient and Thermal-Expansion Coefficient |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2601.05484 |