Mott insulators - 2024 PLAYTIME

Question

The British namesake of these materials also names a critical point for their transition in terms of the Bohr radius. For 10 points each:

[10h] Name these strongly correlated materials, whose electron-electron interactions drive a transition that classical solid-state physics fails to predict, but which is explained by the Hubbard model.

ANSWER: Mott insulators [prompt on insulators]

[10m] Classical theory incorrectly predicts that this region is partially filled in Mott insulators. In typical insulators, the Fermi level lies in the “gap” between this region and a “conduction” counterpart.

ANSWER: valence band [prompt on partial answer]

[10e] Mott insulators transition from these conductive materials, in which the valence and conduction bands are continuous. The first Mott insulators to be discovered were oxides of the “transition” block of these materials.

ANSWER: metals [accept transition metals]

<JC, Physics>

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Summary


2025 PLAYTIME @ CWRU	12/10/2024	Y	5	12.00	100%	20%	0%
2025 PLAYTIME @ Claremont	12/10/2024	Y	4	12.50	100%	25%	0%
2025 PLAYTIME @ Florida	12/10/2024	Y	3	16.67	100%	33%	33%
2024 PLAYTIME @ Harvard	04/26/2025	Y	4	15.00	100%	50%	0%
2024 PLAYTIME @ JHU	10/26/2024	Y	6	11.67	100%	17%	0%
2025 PLAYTIME @ Northwest	12/10/2024	Y	3	6.67	67%	0%	0%
2025 PLAYTIME Online	04/26/2025	Y	9	20.00	100%	56%	44%
2025 PLAYTIME @ Sheffield	12/10/2024	Y	7	10.00	86%	14%	0%
2024 PLAYTIME @ Virginia Tech	07/11/2025	Y	3	13.33	100%	33%	0%

Data


Michigan B	Michigan C	0	0	10	10
Michigan A	Oberlin	0	10	10	20
Ohio State B	Pittsburgh	0	0	10	10
Michigan D	Ohio State D	0	0	10	10
Edwin Laundrorat's Long-Lost Man Unclothès Rat Degrosses	Qin Shi Huang's Immortality Poison	10	10	10	30
Billy's Bastion	Keeping Up With the Cardassians	0	0	10	10
Too much from you lately	Project2025BC: Make Assyria Great Again	0	0	10	10
Art of Premature Signaling	UCSB	0	10	10	20
UCLA A	Claremont B	0	0	10	10
P.C.‚ Daniel‚ Michel‚ and Jason B	UCLA B	0	0	10	10
girl 15 whale i mean they	UCSD	0	0	10	10
BU	Belmont	0	10	10	20
Brandeis	Brown	0	0	10	10
Harvard	RIT	0	0	10	10
MIT	Lexington	0	10	10	20
Ohio State A	Ohio State C	0	0	10	10
CWRU	Rutgers	0	0	10	10
Georgetown	Haverford B	0	0	10	10
Johns Hopkins A	George Mason C	0	10	10	20
Maryland A	Catholic University of America	0	0	10	10
NYU A	NYU C	0	0	10	10
UW B	Arizona State University A	0	0	10	10
Alberta	UW A	0	0	10	10
Washington Connections	Carleton	0	0	0	0
George Mason A	Maryland B	0	0	10	10
Auburn 2026	we need new names	0	10	10	20
evil women enjoyers	Trip-Hop Quizzer Tricky	0	0	10	10
Egypt Airlines Haters	Monsieur Hulot's Academic Team	10	10	10	30
Lancaster	Imperial B	0	10	10	20
Sheffield B	Sheffield C	0	0	10	10
Warwick A	Manchester	0	0	10	10
Warwick B	Warwick C	0	0	0	0
Master and Margaritaville	4 quizbowl pros go Virginia on North Carolina	0	0	10	10
Cambridge	Birmingham	0	0	10	10
Edinburgh	Imperial A	0	0	10	10
Sheffield	LSE	0	0	10	10
Gruh	Four Generalists in Search of a Power	10	10	10	30
Free Agents 1	Mike Dukakis Tank Battalion	10	10	10	30
Adrianne Lenker 4 Nobel Lit Prize 2K65	Somehow Paula Deen Returned	0	0	10	10
Even in Blacksburg There I Am	Ashurbanipal’s Drag Race	0	10	10	20
2 Italians, 2 Poles, All Noles	Goober Gang	0	0	10	10
Mahjonng Masters	Illinois Orange	10	0	10	20
Notre Dame + Epic Games	mongeese	0	0	10	10
MSJ	Quatumvirate	0	10	10	20