Electronic density of states of a U(1) quantum spin liquid with spinon Fermi surface. II. Zeeman magnetic field effects

doi:10.1103/PhysRevB.107.195156

	Electronic density of states of a U(1) quantum spin liquid with spinon Fermi surface. II. Zeeman magnetic field effects
	He, Wen-Yu1 ; Lee, Patrick A.2
	2023-05-15
发表期刊	PHYSICAL REVIEW B (IF:3.2[JCR-2023],3.3[5-Year])
ISSN	2469-9950
EISSN	2469-9969
卷号	107 期号:19
发表状态	已发表
DOI	10.1103/PhysRevB.107.195156
摘要	The Zeeman effect lowers the energy of electrons with spin states which are antiparallel to the applied magnetic field but lifts that of spin parallel states. In quantum spin liquids where the spin and charge degrees of freedom are fractionalized, an anomalous Zeeman response may be expected. In the case of spin liquids with a spinon Fermi surface, the threshold energy to excite an electronic state is found to exhibit no Zeeman shift. This is specific to the spinon Fermi surface case. In contrast, other gapped spin liquids are expected to exhibit the standard Zeeman shift at the band edge even though they also exhibit spin-charge fractionalization. When gauge-field fluctuations are included, we find that the Zeeman shift of the electronic states gets affected by the gauge field induced binding. In the electronic density of states spectra, weak gauge binding induces band-edge resonance peaks which exhibit the Zeeman shift in the same direction as that in the standard Zeeman effect, but the shift is reduced as the binding potential increases. With further increase in the binding potential, the resonance becomes true in-gap bound states and eventually the Zeeman shift direction reverses so it is opposite to the standard Zeeman effect. We propose that one can perform spin-polarized scanning tunneling microscope measurements as a test of the spinon Fermi sea ground state in quantum spin liquid candidate materials. © 2023 American Physical Society.
关键词	Binding energy Electronic density of states Fermi surface Gages Ground state Magnetic field effects Quantum theory Spin fluctuations Binding potential Energy of electron Gauge fields Magnetic-field effects Quantum spin liquid Spin liquids Spin-on Zeeman effect Zeeman magnetic fields Zeeman shift
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收录类别	EI ; SCI
语种	英语
资助项目	DOE office of Basic Sciences[DE-FG02-03ER46076]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001008177200002
出版者	American Physical Society
EI入藏号	20232314203770
EI主题词	Degrees of freedom (mechanics)
EI分类号	701.2 Magnetism: Basic Concepts and Phenomena ; 801.4 Physical Chemistry ; 931.1 Mechanics ; 931.2 Physical Properties of Gases, Liquids and Solids ; 931.3 Atomic and Molecular Physics ; 931.4 Quantum Theory ; Quantum Mechanics ; 932.1 High Energy Physics ; 943.3 Special Purpose Instruments
原始文献类型	Journal article (JA)
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/312340
专题	物质科学与技术学院物质科学与技术学院_PI研究组_贺文宇
通讯作者	He, Wen-Yu
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.MIT, Dept Phys, Cambridge, MA 02139 USA
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	He, Wen-Yu,Lee, Patrick A.. Electronic density of states of a U(1) quantum spin liquid with spinon Fermi surface. II. Zeeman magnetic field effects[J]. PHYSICAL REVIEW B,2023,107(19).
APA	He, Wen-Yu,&Lee, Patrick A..(2023).Electronic density of states of a U(1) quantum spin liquid with spinon Fermi surface. II. Zeeman magnetic field effects.PHYSICAL REVIEW B,107(19).
MLA	He, Wen-Yu,et al."Electronic density of states of a U(1) quantum spin liquid with spinon Fermi surface. II. Zeeman magnetic field effects".PHYSICAL REVIEW B 107.19(2023).