Equation 15 · Part 1 · A Strained Crystal Is a Designer Spacetime
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
Here the paper states its first honest limitation before drawing another line of the device. Every strain-to-tilt sensitivity that goes into the temperature above is computed, not measured — no experiment between 2016 and 2026 reports a tilt parameter under strain in any real type-II material. The most recent attempt is the same Mo _{0.91} W _{0.09} Te _2 operando-strain study the device borrows its material choice from: Lanz and collaborators delivered tensile strain up to 0.34 percent along the crystal’s a-axis, reversible below about 0.17 percent, and measured a roughly 30-percent increase in the density of states at the Fermi level using strain-resolved photoemission — a careful,…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.